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[10-Q] Otter Tail Corp Quarterly Earnings Report

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(Moderate)
Filing Sentiment
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Form Type
10-Q
Rhea-AI Filing Summary

Nexalin Technology (NXL) Q2 2025 10-Q highlights

Income statement: Revenue rose to $70.6 k (+163% YoY) but remained nominal relative to operating costs. Gross profit was $47.8 k, yet operating expenses ballooned to $1.67 m, driving a net loss of $1.58 m (-$0.10/sh) versus a -$1.28 m loss (-$0.17/sh) a year earlier. For the six-month period, revenue reached $111.6 k (+6%), and the net loss widened to $3.57 m.

Cash & capital:

  • Cash & equivalents: $0.43 m (-25% YTD)
  • Short-term investments: $5.36 m (+85% YTD)
  • Public equity offering (May 2025) added net $4.65 m and lifted shares outstanding to 17.4 m (+31%).

Total current assets improved to $6.27 m vs. $3.96 m at FY-end, while current liabilities remain modest at $0.60 m. Stockholders’ equity increased to $5.96 m.

Operations & outlook: R&D spend climbed 33% to $225.8 k as the company advances Gen-2 SYNC and Gen-3 HALO neuro-stimulation devices through FDA pre-submission and Asian commercialization via a 48%-owned JV. Management warns of substantial doubt about going-concern status given continued cash burn (-$2.34 m operating cash flow YTD) and minimal U.S. revenue pending regulatory clearance.

Highlights del 10-Q del secondo trimestre 2025 di Nexalin Technology (NXL)

Conto economico: I ricavi sono saliti a 70,6 mila dollari (+163% su base annua), ma rimangono contenuti rispetto ai costi operativi. Il profitto lordo è stato di 47,8 mila dollari, mentre le spese operative sono aumentate a 1,67 milioni di dollari, causando una perdita netta di 1,58 milioni di dollari (-0,10 dollari per azione) rispetto a una perdita di 1,28 milioni (-0,17 dollari per azione) dell’anno precedente. Nel semestre, i ricavi hanno raggiunto 111,6 mila dollari (+6%) e la perdita netta si è ampliata a 3,57 milioni di dollari.

Liquidità e capitale:

  • Liquidità e mezzi equivalenti: 0,43 milioni di dollari (-25% da inizio anno)
  • Investimenti a breve termine: 5,36 milioni di dollari (+85% da inizio anno)
  • L’offerta pubblica di azioni (maggio 2025) ha generato un incasso netto di 4,65 milioni di dollari e ha portato il numero di azioni in circolazione a 17,4 milioni (+31%).

Le attività correnti totali sono migliorate a 6,27 milioni di dollari rispetto ai 3,96 milioni di fine esercizio, mentre le passività correnti restano contenute a 0,60 milioni di dollari. Il patrimonio netto è salito a 5,96 milioni di dollari.

Operazioni e prospettive: La spesa in R&S è aumentata del 33% a 225,8 mila dollari mentre l’azienda porta avanti i dispositivi di neurostimolazione Gen-2 SYNC e Gen-3 HALO attraverso la pre-sottomissione FDA e la commercializzazione in Asia tramite una joint venture al 48%. La direzione avverte di un dubbio sostanziale sulla continuità aziendale a causa del continuo consumo di cassa (-2,34 milioni di dollari di flusso di cassa operativo da inizio anno) e dei ricavi statunitensi minimi in attesa dell’approvazione regolatoria.

Aspectos destacados del 10-Q del segundo trimestre de 2025 de Nexalin Technology (NXL)

Estado de resultados: Los ingresos aumentaron a 70,6 mil dólares (+163% interanual), aunque siguen siendo nominales en comparación con los costos operativos. La ganancia bruta fue de 47,8 mil dólares, pero los gastos operativos se dispararon a 1,67 millones de dólares, generando una pérdida neta de 1,58 millones de dólares (-0,10 dólares por acción) frente a una pérdida de 1,28 millones (-0,17 dólares por acción) el año anterior. En el período de seis meses, los ingresos alcanzaron 111,6 mil dólares (+6%) y la pérdida neta se amplió a 3,57 millones de dólares.

Efectivo y capital:

  • Efectivo y equivalentes: 0,43 millones de dólares (-25% en lo que va del año)
  • Inversiones a corto plazo: 5,36 millones de dólares (+85% en lo que va del año)
  • La oferta pública de acciones (mayo de 2025) aportó un neto de 4,65 millones de dólares y elevó las acciones en circulación a 17,4 millones (+31%).

Los activos corrientes totales mejoraron a 6,27 millones de dólares frente a 3,96 millones al cierre del ejercicio, mientras que los pasivos corrientes se mantienen modestos en 0,60 millones. El patrimonio neto aumentó a 5,96 millones de dólares.

Operaciones y perspectivas: El gasto en I+D aumentó un 33% hasta 225,8 mil dólares mientras la compañía avanza con los dispositivos de neuroestimulación Gen-2 SYNC y Gen-3 HALO mediante la pre-sumisión a la FDA y la comercialización en Asia a través de una empresa conjunta con un 48% de participación. La dirección advierte de una duda sustancial sobre la continuidad operativa debido al continuo consumo de efectivo (-2,34 millones de dólares de flujo operativo en lo que va del año) y los ingresos mínimos en EE.UU. pendientes de la aprobación regulatoria.

Nexalin Technology (NXL) 2025년 2분기 10-Q 주요 내용

손익계산서: 매출은 7만 600달러로 전년 대비 163% 증가했으나 운영 비용에 비해 여전히 미미한 수준입니다. 매출총이익은 4만 7,800달러였으나, 영업비용이 167만 달러로 급증해 순손실은 158만 달러(-주당 0.10달러)를 기록했으며, 이는 전년 동기 128만 달러 손실(-주당 0.17달러)보다 악화된 수치입니다. 6개월 누적 매출은 11만 1,600달러(+6%)에 달했으며 순손실은 357만 달러로 확대되었습니다.

현금 및 자본:

  • 현금 및 현금성 자산: 43만 달러 (연초 대비 -25%)
  • 단기 투자: 536만 달러 (연초 대비 +85%)
  • 2025년 5월 공모주 발행으로 순자금 465만 달러를 확보했으며, 발행 주식 수는 1,740만 주로 31% 증가했습니다.

총 유동자산은 회계연도 말 396만 달러에서 627만 달러로 증가했으며, 유동부채는 60만 달러로 낮은 수준을 유지하고 있습니다. 자본총계는 596만 달러로 증가했습니다.

운영 및 전망: 연구개발비는 33% 증가한 22만 5,800달러로, 회사는 FDA 사전 제출 절차와 48% 지분을 보유한 합작법인을 통한 아시아 상용화를 진행 중인 Gen-2 SYNC 및 Gen-3 HALO 신경자극기 개발을 추진하고 있습니다. 경영진은 계속되는 현금 소진(-연초 이후 영업활동 현금흐름 -234만 달러)과 규제 승인 대기 중인 미국 내 매출 미미로 인해 계속기업 존속에 대한 중대한 의문을 경고하고 있습니다.

Points clés du 10-Q du deuxième trimestre 2025 de Nexalin Technology (NXL)

Compte de résultat : Le chiffre d'affaires a augmenté à 70,6 K$ (+163 % en glissement annuel) mais reste faible par rapport aux coûts d'exploitation. La marge brute s'est élevée à 47,8 K$, tandis que les charges d'exploitation ont grimpé à 1,67 M$, entraînant une perte nette de 1,58 M$ (-0,10 $ par action) contre une perte de 1,28 M$ (-0,17 $ par action) un an plus tôt. Sur six mois, le chiffre d'affaires a atteint 111,6 K$ (+6 %) et la perte nette s'est creusée à 3,57 M$.

Trésorerie et capital :

  • Trésorerie et équivalents : 0,43 M$ (-25 % depuis le début de l'année)
  • Investissements à court terme : 5,36 M$ (+85 % depuis le début de l'année)
  • L’offre publique d’actions (mai 2025) a généré un produit net de 4,65 M$ et porté le nombre d’actions en circulation à 17,4 M (+31 %).

Les actifs courants totaux se sont améliorés à 6,27 M$ contre 3,96 M$ en fin d’exercice, tandis que les passifs courants restent modestes à 0,60 M$. Les capitaux propres ont augmenté à 5,96 M$.

Opérations et perspectives : Les dépenses en R&D ont augmenté de 33 % pour atteindre 225,8 K$, alors que la société fait progresser les dispositifs de neurostimulation Gen-2 SYNC et Gen-3 HALO via la pré-soumission à la FDA et la commercialisation en Asie via une coentreprise détenue à 48 %. La direction met en garde contre un doute substantiel sur la continuité d’exploitation, compte tenu de la consommation continue de trésorerie (-2,34 M$ de flux de trésorerie d’exploitation depuis le début de l’année) et des revenus américains minimes en attente d’une autorisation réglementaire.

Nexalin Technology (NXL) Q2 2025 10-Q Highlights

Gewinn- und Verlustrechnung: Der Umsatz stieg auf 70,6 Tsd. USD (+163 % gegenüber dem Vorjahr), blieb jedoch im Verhältnis zu den Betriebskosten geringfügig. Der Bruttogewinn betrug 47,8 Tsd. USD, während die Betriebskosten auf 1,67 Mio. USD anstiegen, was zu einem Nettoverlust von 1,58 Mio. USD (-0,10 USD je Aktie) im Vergleich zu einem Verlust von 1,28 Mio. USD (-0,17 USD je Aktie) im Vorjahr führte. Für den Sechsmonatszeitraum erreichten die Umsätze 111,6 Tsd. USD (+6 %) und der Nettoverlust weitete sich auf 3,57 Mio. USD aus.

Barmittel und Kapital:

  • Barmittel und Zahlungsmitteläquivalente: 0,43 Mio. USD (-25 % im Jahresverlauf)
  • Kurzfristige Investitionen: 5,36 Mio. USD (+85 % im Jahresverlauf)
  • Die öffentliche Aktienemission (Mai 2025) brachte netto 4,65 Mio. USD ein und erhöhte die ausstehenden Aktien auf 17,4 Mio. (+31 %).

Die gesamten kurzfristigen Vermögenswerte verbesserten sich auf 6,27 Mio. USD gegenüber 3,96 Mio. USD zum Geschäftsjahresende, während die kurzfristigen Verbindlichkeiten mit 0,60 Mio. USD moderat bleiben. Das Eigenkapital stieg auf 5,96 Mio. USD.

Geschäftstätigkeit und Ausblick: Die Ausgaben für Forschung und Entwicklung stiegen um 33 % auf 225,8 Tsd. USD, während das Unternehmen die Neurostimulationsgeräte Gen-2 SYNC und Gen-3 HALO durch die FDA-Vorab-Einreichung und die Kommerzialisierung in Asien über ein zu 48 % gehaltenes Joint Venture vorantreibt. Das Management warnt vor erheblichen Zweifeln an der Fortführungsfähigkeit angesichts des anhaltenden Cash-Burns (-2,34 Mio. USD operativer Cashflow im Jahresverlauf) und minimaler US-Umsätze, die auf die behördliche Freigabe warten.

Positive
  • None.
Negative
  • None.

Insights

TL;DR: Cash boost offsets rising losses; thesis still hinges on FDA approvals.

The $4.6 m raise materially lengthens runway (~18 months at current burn) and funds pivotal trials. However, topline remains de minimis, customer concentration is extreme, and share dilution was 31%. With no U.S. sales until 510(k)/De Novo clearance, the valuation case rests on regulatory progress, making the filing modestly negative despite liquidity relief.

TL;DR: Pipeline advancing; FDA dialogue ongoing but timelines undefined.

Management secured consensus with FDA on anxiety/insomnia trial design and holds NMPA approval in China via JV, validating technology. Yet U.S. path (Class II vs. III, De Novo, or PMA) is still in preparatory stage, so revenue inflection is unlikely before late 2026. Investors should watch upcoming Gen-2/Gen-3 trial readouts for catalysts.

Highlights del 10-Q del secondo trimestre 2025 di Nexalin Technology (NXL)

Conto economico: I ricavi sono saliti a 70,6 mila dollari (+163% su base annua), ma rimangono contenuti rispetto ai costi operativi. Il profitto lordo è stato di 47,8 mila dollari, mentre le spese operative sono aumentate a 1,67 milioni di dollari, causando una perdita netta di 1,58 milioni di dollari (-0,10 dollari per azione) rispetto a una perdita di 1,28 milioni (-0,17 dollari per azione) dell’anno precedente. Nel semestre, i ricavi hanno raggiunto 111,6 mila dollari (+6%) e la perdita netta si è ampliata a 3,57 milioni di dollari.

Liquidità e capitale:

  • Liquidità e mezzi equivalenti: 0,43 milioni di dollari (-25% da inizio anno)
  • Investimenti a breve termine: 5,36 milioni di dollari (+85% da inizio anno)
  • L’offerta pubblica di azioni (maggio 2025) ha generato un incasso netto di 4,65 milioni di dollari e ha portato il numero di azioni in circolazione a 17,4 milioni (+31%).

Le attività correnti totali sono migliorate a 6,27 milioni di dollari rispetto ai 3,96 milioni di fine esercizio, mentre le passività correnti restano contenute a 0,60 milioni di dollari. Il patrimonio netto è salito a 5,96 milioni di dollari.

Operazioni e prospettive: La spesa in R&S è aumentata del 33% a 225,8 mila dollari mentre l’azienda porta avanti i dispositivi di neurostimolazione Gen-2 SYNC e Gen-3 HALO attraverso la pre-sottomissione FDA e la commercializzazione in Asia tramite una joint venture al 48%. La direzione avverte di un dubbio sostanziale sulla continuità aziendale a causa del continuo consumo di cassa (-2,34 milioni di dollari di flusso di cassa operativo da inizio anno) e dei ricavi statunitensi minimi in attesa dell’approvazione regolatoria.

Aspectos destacados del 10-Q del segundo trimestre de 2025 de Nexalin Technology (NXL)

Estado de resultados: Los ingresos aumentaron a 70,6 mil dólares (+163% interanual), aunque siguen siendo nominales en comparación con los costos operativos. La ganancia bruta fue de 47,8 mil dólares, pero los gastos operativos se dispararon a 1,67 millones de dólares, generando una pérdida neta de 1,58 millones de dólares (-0,10 dólares por acción) frente a una pérdida de 1,28 millones (-0,17 dólares por acción) el año anterior. En el período de seis meses, los ingresos alcanzaron 111,6 mil dólares (+6%) y la pérdida neta se amplió a 3,57 millones de dólares.

Efectivo y capital:

  • Efectivo y equivalentes: 0,43 millones de dólares (-25% en lo que va del año)
  • Inversiones a corto plazo: 5,36 millones de dólares (+85% en lo que va del año)
  • La oferta pública de acciones (mayo de 2025) aportó un neto de 4,65 millones de dólares y elevó las acciones en circulación a 17,4 millones (+31%).

Los activos corrientes totales mejoraron a 6,27 millones de dólares frente a 3,96 millones al cierre del ejercicio, mientras que los pasivos corrientes se mantienen modestos en 0,60 millones. El patrimonio neto aumentó a 5,96 millones de dólares.

Operaciones y perspectivas: El gasto en I+D aumentó un 33% hasta 225,8 mil dólares mientras la compañía avanza con los dispositivos de neuroestimulación Gen-2 SYNC y Gen-3 HALO mediante la pre-sumisión a la FDA y la comercialización en Asia a través de una empresa conjunta con un 48% de participación. La dirección advierte de una duda sustancial sobre la continuidad operativa debido al continuo consumo de efectivo (-2,34 millones de dólares de flujo operativo en lo que va del año) y los ingresos mínimos en EE.UU. pendientes de la aprobación regulatoria.

Nexalin Technology (NXL) 2025년 2분기 10-Q 주요 내용

손익계산서: 매출은 7만 600달러로 전년 대비 163% 증가했으나 운영 비용에 비해 여전히 미미한 수준입니다. 매출총이익은 4만 7,800달러였으나, 영업비용이 167만 달러로 급증해 순손실은 158만 달러(-주당 0.10달러)를 기록했으며, 이는 전년 동기 128만 달러 손실(-주당 0.17달러)보다 악화된 수치입니다. 6개월 누적 매출은 11만 1,600달러(+6%)에 달했으며 순손실은 357만 달러로 확대되었습니다.

현금 및 자본:

  • 현금 및 현금성 자산: 43만 달러 (연초 대비 -25%)
  • 단기 투자: 536만 달러 (연초 대비 +85%)
  • 2025년 5월 공모주 발행으로 순자금 465만 달러를 확보했으며, 발행 주식 수는 1,740만 주로 31% 증가했습니다.

총 유동자산은 회계연도 말 396만 달러에서 627만 달러로 증가했으며, 유동부채는 60만 달러로 낮은 수준을 유지하고 있습니다. 자본총계는 596만 달러로 증가했습니다.

운영 및 전망: 연구개발비는 33% 증가한 22만 5,800달러로, 회사는 FDA 사전 제출 절차와 48% 지분을 보유한 합작법인을 통한 아시아 상용화를 진행 중인 Gen-2 SYNC 및 Gen-3 HALO 신경자극기 개발을 추진하고 있습니다. 경영진은 계속되는 현금 소진(-연초 이후 영업활동 현금흐름 -234만 달러)과 규제 승인 대기 중인 미국 내 매출 미미로 인해 계속기업 존속에 대한 중대한 의문을 경고하고 있습니다.

Points clés du 10-Q du deuxième trimestre 2025 de Nexalin Technology (NXL)

Compte de résultat : Le chiffre d'affaires a augmenté à 70,6 K$ (+163 % en glissement annuel) mais reste faible par rapport aux coûts d'exploitation. La marge brute s'est élevée à 47,8 K$, tandis que les charges d'exploitation ont grimpé à 1,67 M$, entraînant une perte nette de 1,58 M$ (-0,10 $ par action) contre une perte de 1,28 M$ (-0,17 $ par action) un an plus tôt. Sur six mois, le chiffre d'affaires a atteint 111,6 K$ (+6 %) et la perte nette s'est creusée à 3,57 M$.

Trésorerie et capital :

  • Trésorerie et équivalents : 0,43 M$ (-25 % depuis le début de l'année)
  • Investissements à court terme : 5,36 M$ (+85 % depuis le début de l'année)
  • L’offre publique d’actions (mai 2025) a généré un produit net de 4,65 M$ et porté le nombre d’actions en circulation à 17,4 M (+31 %).

Les actifs courants totaux se sont améliorés à 6,27 M$ contre 3,96 M$ en fin d’exercice, tandis que les passifs courants restent modestes à 0,60 M$. Les capitaux propres ont augmenté à 5,96 M$.

Opérations et perspectives : Les dépenses en R&D ont augmenté de 33 % pour atteindre 225,8 K$, alors que la société fait progresser les dispositifs de neurostimulation Gen-2 SYNC et Gen-3 HALO via la pré-soumission à la FDA et la commercialisation en Asie via une coentreprise détenue à 48 %. La direction met en garde contre un doute substantiel sur la continuité d’exploitation, compte tenu de la consommation continue de trésorerie (-2,34 M$ de flux de trésorerie d’exploitation depuis le début de l’année) et des revenus américains minimes en attente d’une autorisation réglementaire.

Nexalin Technology (NXL) Q2 2025 10-Q Highlights

Gewinn- und Verlustrechnung: Der Umsatz stieg auf 70,6 Tsd. USD (+163 % gegenüber dem Vorjahr), blieb jedoch im Verhältnis zu den Betriebskosten geringfügig. Der Bruttogewinn betrug 47,8 Tsd. USD, während die Betriebskosten auf 1,67 Mio. USD anstiegen, was zu einem Nettoverlust von 1,58 Mio. USD (-0,10 USD je Aktie) im Vergleich zu einem Verlust von 1,28 Mio. USD (-0,17 USD je Aktie) im Vorjahr führte. Für den Sechsmonatszeitraum erreichten die Umsätze 111,6 Tsd. USD (+6 %) und der Nettoverlust weitete sich auf 3,57 Mio. USD aus.

Barmittel und Kapital:

  • Barmittel und Zahlungsmitteläquivalente: 0,43 Mio. USD (-25 % im Jahresverlauf)
  • Kurzfristige Investitionen: 5,36 Mio. USD (+85 % im Jahresverlauf)
  • Die öffentliche Aktienemission (Mai 2025) brachte netto 4,65 Mio. USD ein und erhöhte die ausstehenden Aktien auf 17,4 Mio. (+31 %).

Die gesamten kurzfristigen Vermögenswerte verbesserten sich auf 6,27 Mio. USD gegenüber 3,96 Mio. USD zum Geschäftsjahresende, während die kurzfristigen Verbindlichkeiten mit 0,60 Mio. USD moderat bleiben. Das Eigenkapital stieg auf 5,96 Mio. USD.

Geschäftstätigkeit und Ausblick: Die Ausgaben für Forschung und Entwicklung stiegen um 33 % auf 225,8 Tsd. USD, während das Unternehmen die Neurostimulationsgeräte Gen-2 SYNC und Gen-3 HALO durch die FDA-Vorab-Einreichung und die Kommerzialisierung in Asien über ein zu 48 % gehaltenes Joint Venture vorantreibt. Das Management warnt vor erheblichen Zweifeln an der Fortführungsfähigkeit angesichts des anhaltenden Cash-Burns (-2,34 Mio. USD operativer Cashflow im Jahresverlauf) und minimaler US-Umsätze, die auf die behördliche Freigabe warten.

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-Q
(Mark One)
    Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
For the quarterly period ended June 30, 2025 or
    Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Commission File Number 0-53713 
OTTER TAIL CORPORATION
(Exact name of registrant as specified in its charter) 
Minnesota
(State or other jurisdiction of incorporation or organization)
27-0383995
(I.R.S. Employer Identification No.)
215 South Cascade Street, Box 496, Fergus Falls, Minnesota
(Address of principal executive offices)
56538-0496
(Zip Code)
Registrant's telephone number, including area code: 866-410-8780
Securities registered pursuant to Section 12(b) of the Act: 
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common Shares, par value $5.00 per shareOTTRThe Nasdaq Stock Market LLC
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes      No   
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes       No   
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one): 
 
Large Accelerated Filer
Accelerated Filer
 
Non-Accelerated Filer
Smaller Reporting Company
Emerging Growth Company
 
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act   
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes    No  
Indicate the number of shares outstanding of each of the registrant's classes of common stock, as of the latest practicable date:
41,905,520 Common Shares ($5 par value) as of July 31, 2025. 



Table of Contents
TABLE OF CONTENTS
 DescriptionPage
 
Definitions
2
Forward Looking Information
2
PART I
  
ITEM 1.
Financial Statements:
 
Consolidated Balance Sheets
3
Consolidated Statements of Income
4
 
Consolidated Statements of Comprehensive Income
5
 
Consolidated Statements of Shareholders’ Equity
6
 
Consolidated Statements of Cash Flows
7
 
Condensed Notes to Consolidated Financial Statements
8
ITEM 2.
Management’s Discussion and Analysis of Financial Condition and Results of Operations
25
ITEM 3.
Quantitative and Qualitative Disclosures About Market Risk
37
ITEM 4.
Controls and Procedures
37
PART II
ITEM 1.
Legal Proceedings
37
ITEM 1A.
Risk Factors
37
ITEM 5.
Other Information
37
ITEM 6.
Exhibits
38
Signatures
 
39

1

Table of Contents
DEFINITIONS
The following abbreviations or acronyms are used in the text.
ARO
Asset Retirement Obligation
OTPOtter Tail Power Company
ARPAlternative Revenue ProgramPIRPhase-In Rider
ASC
Accounting Standards Codification
PSLRAPrivate Securities Litigation Reform Act of 1995
EPA
Environmental Protection Agency
PTCProduction Tax Credits
ESSRPExecutive Survivor and Supplemental Retirement PlanPVCPolyvinyl chloride
EUICElectric Utility Infrastructure Costs Rider
RHR
Regional Haze Rule
FASB
Financial Accounting Standards Board
ROEReturn on equity
FERCFederal Energy Regulatory CommissionRRRRenewable Resource Rider
GHG
Greenhouse Gas
RTO
Regional Transmission Organizations
kwhkilowatt-hour
SDPUC
South Dakota Public Utilities Commission
MerricourtMerricourt Wind Energy CenterSECSecurities and Exchange Commission
MISOMidcontinent Independent System Operator, Inc.
SIP
State Implementation Plan
MPUC
Minnesota Public Utilities Commission
SOFR
Secured Overnight Financing Rate
OBBBA
One Big Beautiful Bill Act
TCRTransmission Cost Recovery Rider
OTCOtter Tail Corporation
FORWARD-LOOKING INFORMATION
This Quarterly Report on Form 10-Q contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 (the PSLRA). When used in this Form 10-Q and in future filings by Otter Tail Corporation (the Company) with the Securities and Exchange Commission (SEC), in the Company’s press releases and in oral statements, words such as “anticipate,” “believe,” “can," "could,” “estimate,” “expect,” "future," "goal," “intend,” "likely," “may,” “outlook,” “plan,” “possible,” “potential,” "predict," "probable," "projected," “should,” "target," “will,” “would” or similar expressions are intended to identify forward-looking statements within the meaning of the PSLRA. Such statements are based on current expectations and assumptions and entail various risks and uncertainties that could cause actual results to differ materially from those expressed in such forward-looking statements. The Company’s risks and uncertainties include, among other things, uncertainty of future investments and capital expenditures; rate base levels and rate base growth; long-term investment risk; seasonal weather patterns and extreme weather events; counterparty credit risk; future business volumes with key customers; reductions in our credit ratings; our ability to access capital markets on favorable terms; assumptions and costs relating to funding our employee benefit plans; our subsidiaries’ ability to make dividend payments; cyber security threats or data breaches; the impact of government legislation and regulation including foreign trade and environmental policies; health and safety laws and regulations; the impact of climate change including compliance with legislative and regulatory changes to address climate change; operational and economic risks associated with our electric generating and manufacturing facilities; risks associated with energy markets; the availability and pricing of resource materials; inflation cost pressures; attracting and maintaining a qualified and stable workforce; expectations regarding regulatory proceedings; including state utility commission approval of resource plans; assigned service areas; the siting and construction of major facilities; capital structure; and allowed customer rates; actual and threatened claims or litigation; and changing macroeconomic and industry conditions that impact demand for our products, pricing and margins. These and other risks and uncertainties are more fully described in our filings with the SEC, including our most recently filed Annual Report on Form 10-K and Item 1A. Risk Factors. Forward-looking statements speak only as of the date they are made, and we expressly disclaim any obligation to update any forward-looking information.
PART I. FINANCIAL INFORMATION
ITEM 1.FINANCIAL STATEMENTS

2

Table of Contents
OTTER TAIL CORPORATION
CONSOLIDATED BALANCE SHEETS (unaudited)
(in thousands, except share data)June 30, 2025December 31, 2024
Assets  
Current Assets  
Cash and Cash Equivalents$307,241 $294,651 
Receivables, net of allowance for credit losses180,823 145,964 
Inventories151,558 148,885 
Regulatory Assets8,946 9,962 
Other Current Assets25,842 30,579 
Total Current Assets674,410 630,041 
Noncurrent Assets
Investments128,289 121,177 
Property, Plant and Equipment, net of accumulated depreciation2,754,068 2,692,460 
Regulatory Assets99,010 98,673 
Intangible Assets, net of accumulated amortization5,192 5,743 
Goodwill37,572 37,572 
Other Noncurrent Assets66,747 66,416 
Total Noncurrent Assets3,090,878 3,022,041 
Total Assets$3,765,288 $3,652,082 
Liabilities and Shareholders' Equity
Current Liabilities
Short-Term Debt$ $69,615 
Accounts Payable98,234 113,574 
Accrued Salaries and Wages25,039 34,398 
Accrued Taxes16,465 17,314 
Regulatory Liabilities24,580 29,307 
Other Current Liabilities39,162 45,582 
Total Current Liabilities203,480 309,790 
Noncurrent Liabilities
Pension Benefit Liability32,204 32,614 
Other Postretirement Benefits Liability26,494 27,385 
Regulatory Liabilities289,546 288,928 
Deferred Income Taxes278,091 267,745 
Deferred Tax Credits14,705 14,990 
Other Noncurrent Liabilities102,932 98,397 
Total Noncurrent Liabilities743,972 730,059 
Commitments and Contingencies (Note 9)
Capitalization
Long-Term Debt1,043,374 943,734 
Shareholders' Equity
Common Shares: 50,000,000 shares authorized, $5 par value; 41,904,370 and 41,827,967
outstanding at June 30, 2025 and December 31, 2024
209,522 209,140 
Additional Paid-In Capital432,664 429,089 
Retained Earnings1,131,542 1,029,738 
Accumulated Other Comprehensive Income734 532 
Total Shareholders' Equity1,774,462 1,668,499 
Total Capitalization2,817,836 2,612,233 
Total Liabilities and Shareholders' Equity$3,765,288 $3,652,082 
See accompanying condensed notes to consolidated financial statements.
3

Table of Contents
OTTER TAIL CORPORATION
CONSOLIDATED STATEMENTS OF INCOME (unaudited)
Three Months Ended June 30,Six Months Ended June 30,
(in thousands, except per-share amounts)2025202420252024
Operating Revenues  
Electric$128,731 $112,828 $278,451 $254,317 
Product Sales204,312 229,508 391,945 435,087 
Total Operating Revenues333,043 342,336 670,396 689,404 
Operating Expenses
Electric Production Fuel16,292 12,324 30,613 30,018 
Electric Purchased Power15,497 9,249 46,367 31,771 
Electric Operating and Maintenance Expenses46,804 44,652 95,685 92,630 
Cost of Products Sold (excluding depreciation)105,966 116,795 210,353 231,518 
Nonelectric Selling, General, and Administrative Expenses
17,352 18,154 38,644 37,067 
Depreciation and Amortization29,447 26,632 58,822 52,528 
Electric Property Taxes4,227 3,619 8,455 7,986 
Total Operating Expenses235,585 231,425 488,939 483,518 
Operating Income97,458 110,911 181,457 205,886 
Other Income and (Expense)
Interest Expense(11,720)(10,202)(23,273)(20,052)
Nonservice Components of Postretirement Benefits854 2,388 2,136 4,830 
Other Income (Expense), net4,788 4,490 9,244 9,069 
Income Before Income Taxes91,380 107,587 169,564 199,733 
Income Tax Expense13,652 20,592 23,737 38,400 
Net Income$77,728 $86,995 $145,827 $161,333 
Weighted-Average Common Shares Outstanding:
Basic41,874 41,784 41,850 41,754 
Diluted42,118 42,068 42,090 42,051 
Earnings Per Share:
Basic$1.86 $2.08 $3.48 $3.86 
Diluted$1.85 $2.07 $3.46 $3.84 
See accompanying condensed notes to consolidated financial statements.
4

Table of Contents
OTTER TAIL CORPORATION
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited)
Three Months Ended June 30,Six Months Ended June 30,
(in thousands)2025202420252024
Net Income$77,728 $86,995 $145,827 $161,333 
Other Comprehensive Income (Loss):
Unrealized Gain (Loss) on Available-for-Sale Securities, net of tax (expense) benefit of $0, $71, ($66) and $74
12 (269)225 (282)
Pension and Other Postretirement Benefits, net of tax benefit of $4, $10, $8 and $36
(12)(29)(23)(103)
Total Other Comprehensive Income (Loss)
 (298)202 (385)
Total Comprehensive Income$77,728 $86,697 $146,029 $160,948 
See accompanying condensed notes to consolidated financial statements.
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OTTER TAIL CORPORATION
CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (unaudited)
(in thousands, except common shares outstanding)Common
Shares
Outstanding
Par Value,
Common
Shares
Additional Paid-In CapitalRetained
Earnings
Accumulated Other
Comprehensive
Income (Loss)
Total Shareholders' Equity
Balance, March 31, 202541,873,995 $209,370 $431,423 $1,075,834 $734 $1,717,361 
Stock Issued Under Share-Based Compensation Plans, net of shares withheld for employee taxes30,375 152 (152)— —  
Stock Purchase Plan Expenses
— — (244)— — (244)
Stock Compensation Expense— — 1,637 — — 1,637 
Net Income— — — 77,728 — 77,728 
Other Comprehensive Income
— — — — —  
Common Dividends ($0.5250 per share)
— — — (22,020)— (22,020)
Balance, June 30, 202541,904,370 $209,522 $432,664 $1,131,542 $734 $1,774,462 
Balance, March 31, 202441,783,750 $208,918 $426,358 $861,127 $1,061 $1,497,464 
Stock Issued Under Share-Based Compensation Plans, net of shares withheld for employee taxes30,675 154 (154)— —  
Stock Purchase Plan Expenses
— — (250)— — (250)
Stock Compensation Expense— — 1,310 — — 1,310 
Net Income— — — 86,995 — 86,995 
Other Comprehensive Loss
— — — — (298)(298)
Common Dividends ($0.4675 per share)
— — — (19,569)— (19,569)
Balance, June 30, 202441,814,425 $209,072 $427,264 $928,553 $763 $1,565,652 
Balance, December 31, 202441,827,967 $209,140 $429,089 $1,029,738 $532 $1,668,499 
Stock Issued Under Share-Based Compensation Plans, net of shares withheld for employee taxes76,403 382 (3,516)— — (3,134)
Stock Purchase Plan Expenses
— — (305)— — (305)
Stock Compensation Expense— — 7,396 — — 7,396 
Net Income— — — 145,827 — 145,827 
Other Comprehensive Income
— — — — 202 202 
Common Dividends ($1.0500 per share)
— — — (44,023)— (44,023)
Balance, June 30, 202541,904,370 $209,522 $432,664 $1,131,542 $734 $1,774,462 
Balance, December 31, 202341,710,521 $208,553 $426,963 $806,342 $1,148 $1,443,006 
Stock Issued Under Share-Based Compensation Plans, net of shares withheld for employee taxes103,904 519 (6,272)— — (5,753)
Stock Purchase Plan Expenses
— — (251)— — (251)
Stock Compensation Expense— — 6,824 — — 6,824 
Net Income— — — 161,333 — 161,333 
Other Comprehensive Loss
— — — — (385)(385)
Common Dividends ($0.9350 per share)
— — — (39,122)— (39,122)
Balance, June 30, 202441,814,425 $209,072 $427,264 $928,553 $763 $1,565,652 
See accompanying condensed notes to consolidated financial statements.
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OTTER TAIL CORPORATION
CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited)
Six Months Ended June 30,
(in thousands)20252024
Operating Activities  
Net Income$145,827 $161,333 
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation and Amortization58,822 52,528 
Deferred Tax Credits(285)(372)
Deferred Income Taxes6,149 9,492 
Investment Gains
(2,741)(3,111)
Stock Compensation Expense7,396 6,824 
Other, Net(1,745)(1,251)
Changes in Operating Assets and Liabilities:
Receivables(34,859)(34,803)
Inventories(131)(11,551)
Regulatory Assets(643)7,361 
Other Assets4,756 (3,951)
Accounts Payable(6,477)41,239 
Accrued and Other Liabilities(13,447)(19,312)
Regulatory Liabilities198 23,863 
Pension and Other Postretirement Benefits(3,441)(4,828)
Net Cash Provided by Operating Activities159,379 223,461 
Investing Activities
Capital Expenditures(124,239)(175,528)
Proceeds from Disposal of Noncurrent Assets2,792 5,124 
Purchases of Investments and Other Assets
(5,579)(57,661)
Net Cash Used in Investing Activities(127,026)(228,065)
Financing Activities
Net Repayments of Short-Term Debt
(69,615)(68,612)
Proceeds from Issuance of Long-Term Debt100,000 120,000 
Dividends Paid(44,023)(39,122)
Payments for Shares Withheld for Employee Tax Obligations(3,134)(5,753)
Other, net(2,991)(1,610)
Net Cash (Used In) Provided by Financing Activities
(19,763)4,903 
Net Change in Cash and Cash Equivalents12,590 299 
Cash and Cash Equivalents at Beginning of Period294,651 230,373 
Cash and Cash Equivalents at End of Period$307,241 $230,672 
Supplemental Disclosure of Noncash Investing Activities
Accrued Property, Plant and Equipment Additions$13,576 $9,198 
See accompanying condensed notes to consolidated financial statements
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OTTER TAIL CORPORATION
CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (unaudited)
1. Summary of Significant Accounting Policies
Overview
Otter Tail Corporation (OTC) and its subsidiaries (collectively, the "Company", "us", "our" or "we") form a diverse, multi-platform business consisting of a vertically integrated, regulated utility with generation, transmission and distribution facilities complemented by manufacturing businesses providing metal fabrication for custom machine parts and metal components, manufacturing of extruded and thermoformed plastic products, and manufacturing of polyvinyl chloride (PVC) pipe products. We classify our business into three segments: Electric, Manufacturing and Plastics.
Basis of Presentation
The unaudited consolidated financial statements included herein have been prepared pursuant to the rules and regulations of the SEC for interim reporting. Accordingly, they do not include all the information and footnotes required by generally accepted accounting principles. In the opinion of management, we have included all adjustments, including normal recurring accruals, necessary for a fair presentation of the consolidated financial statements for the periods presented. The consolidated financial statements and condensed notes thereto should be read in conjunction with the consolidated financial statements and notes included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024.
Because of the seasonality of our businesses and other factors, earnings for the three and six months ended June 30, 2025 should not be taken as an indication of earnings for all or any part of the balance of the current year or as an indication of earnings for future years.
Use of Estimates
We use estimates based on the best information available in recording transactions and balances resulting from business operations. As better information becomes available or actual amounts are known, the recorded estimates are revised. Consequently, operating results can be affected by revisions to prior accounting estimates.
Recent Accounting Pronouncements
Income Taxes. In December 2023, the Financial Accounting Standards Board (FASB) issued amended authoritative guidance codified in Accounting Standards Codification (ASC) 740, Income Taxes. The amended guidance requires additional disaggregated information in effective tax rate reconciliation disclosures and additional disaggregated information about income taxes paid. The updated standard is effective for our annual periods beginning in 2025. The amended guidance is to be applied on a prospective basis with the option to apply the standard retrospectively. We anticipate adopting the updated standard in our Form 10-K for the year ended December 31, 2025, and electing to apply the standard on a retrospective basis for all periods presented.
Disaggregated Income Statement Expenses. In November 2024, the FASB issued authoritative guidance codified in ASC 220, Income Statement—Reporting Comprehensive Income, which will require additional disclosure of certain costs and expenses within the notes to the financial statements. The updated standard is effective for our annual periods beginning in 2027 and interim periods beginning in the first quarter of fiscal 2028 and can be applied on either a prospective or retrospective basis. Early adoption is permitted. We are currently evaluating the impact that the updated standard will have on our financial statement disclosures.
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2. Segment Information
Our business is comprised of three reportable segments: Electric, Manufacturing and Plastics, consistent with our business strategy, organizational structure, and internal reporting and review processes. Segment net income is the primary measure of segment profit or loss used by our chief operating decision maker in assessing segment performance and allocating resources to our segments.
Segment Profit or Loss
Information about each segment, including significant expenses and net income of each segment, for the three and six months ended June 30, 2025 and 2024 are as follows:
Electric Segment
Three Months Ended June 30,Six Months Ended June 30,
(in thousands)2025202420252024
Operating Revenue$128,731 $112,828 $278,451 $254,317 
Production Fuel and Purchased Power31,789 21,573 76,980 61,789 
Operating and Maintenance Expenses46,804 44,652 95,685 92,630 
Depreciation and Amortization22,278 20,387 44,655 40,273 
Property Taxes4,227 3,619 8,455 7,986 
Interest Expense10,822 9,307 21,479 18,261 
Income Tax (Benefit) Expense(4,469)(1,401)(8,477)(225)
Other Segment Items(1)
(1,915)(3,794)(4,229)(7,353)
Net Income$19,195 $18,485 $43,903 $40,956 
(1) Other segment items includes nonservice components of postretirement benefits, allowance for funds used during construction and other expenses (income).
Manufacturing Segment
Three Months Ended June 30,Six Months Ended June 30,
(in thousands)2025202420252024
Operating Revenue$78,726 $96,684 $160,412 $196,065 
Cost of Goods Sold63,311 75,620 131,827 156,235 
Selling, General, and Administrative Expenses10,350 11,464 21,093 22,816 
Interest Expense627 631 1,249 1,202 
Income Tax Expense958 2,135 1,230 3,717 
Other Segment Items(1)(1) (1)
Net Income$3,481 $6,835 $5,013 $12,096 
Plastics Segment
Three Months Ended June 30,Six Months Ended June 30,
(in thousands)2025202420252024
Operating Revenue$125,586 $132,824 $231,533 $239,022 
Cost of Goods Sold46,929 44,998 87,016 82,809 
Selling, General, and Administrative Expenses6,623 5,737 13,608 10,821 
Interest Expense246 151 392 298 
Income Tax Expense18,684 21,327 33,977 37,771 
Other Segment Items (1)(3)(27)
Net Income$53,104 $60,612 $96,543 $107,350 
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Capital Expenditures and Identifiable Assets
The following provides capital expenditures for each reportable segment and our corporate cost center for the six months ended June 30, 2025 and 2024:
Six Months Ended June 30,
(in thousands)20252024
Capital Expenditures
Electric$114,038 $145,201 
Manufacturing4,674 15,708 
Plastics4,915 14,550 
Corporate612 69 
Total$124,239 $175,528 
The following provides the identifiable assets by segment and corporate assets as of June 30, 2025 and December 31, 2024:
(in thousands)June 30,
2025
December 31, 2024
Identifiable Assets
Electric$2,914,414 $2,785,522 
Manufacturing247,556 254,445 
Plastics221,253 186,043 
Corporate382,065 426,072 
Total$3,765,288 $3,652,082 
Corporate assets consist primarily of cash and cash equivalents, prepaid expenses and investments.
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Reconciliation to Consolidated Amounts
Certain costs are not allocated to our operating segments. Corporate operating costs include items such as corporate staff and overhead costs, the results of our captive insurance company and other items excluded from the measurement of operating segment performance. Corporate is not an operating segment, rather it is added to operating segment totals to reconcile to consolidated amounts.
Included below is a reconciliation of certain segment information and our unallocated corporate costs to consolidated amounts for the three and six months ended June 30, 2025 and 2024:
Three Months Ended June 30,Six Months Ended June 30,
(in thousands)2025202420252024
Depreciation and Amortization
Electric$22,278 $20,387 $44,655 $40,273 
Manufacturing5,523 5,087 10,946 9,999 
Plastics1,588 1,133 3,135 2,208 
Corporate58 25 86 48 
Total
$29,447 $26,632 $58,822 $52,528 
Interest Expense
Total Interest Expense of Reportable Segments$11,695 $10,089 $23,120 $19,761 
Corporate Interest Expense25 113 153 291 
Total
$11,720 $10,202 $23,273 $20,052 
Income Tax Expense (Benefit)
Total Income Tax Expense of Reportable Segments$15,173 $22,061 $26,730 $41,263 
Corporate Income Tax Benefit(1,521)(1,469)(2,993)(2,863)
Total
$13,652 $20,592 $23,737 $38,400 
Net Income
Total Net Income of Reportable Segments$75,780 $85,932 $145,459 $160,402 
Corporate Net Income
1,948 1,063 368 931 
Total
$77,728 $86,995 $145,827 $161,333 

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3. Revenue
We present our operating revenues from external customers, in total and by amounts arising from contracts with customers and alternative revenue program (ARP) arrangements, disaggregated by revenue source and segment for the three and six months ended June 30, 2025 and 2024:
Three Months Ended June 30,Six Months Ended June 30,
(in thousands)2025202420252024
Operating Revenues
Electric Segment
Retail: Residential$29,586 $26,369 $72,846 $65,824 
Retail: Commercial and Industrial78,699 68,191 166,585 151,221 
Retail: Other1,845 1,822 4,071 3,826 
  Total Retail110,130 96,382 243,502 220,871 
Transmission13,232 12,440 25,363 24,654 
Wholesale3,261 1,669 6,039 5,134 
Other2,108 2,337 3,547 3,658 
Total Electric Segment128,731 112,828 278,451 254,317 
Manufacturing Segment
Metal Parts and Tooling69,348 88,152 140,219 176,067 
Plastic Products and Tooling7,587 6,467 16,545 15,453 
Scrap Metal1,791 2,065 3,648 4,545 
Total Manufacturing Segment78,726 96,684 160,412 196,065 
Plastics Segment
PVC Pipe125,586 132,824 231,533 239,022 
Total Operating Revenue333,043 342,336 670,396 689,404 
Less: Non-contract Revenues Included Above
Electric Segment - ARP Revenues610 (62)628 (234)
Total Operating Revenues from Contracts with Customers$332,433 $342,398 $669,768 $689,638 
4. Select Balance Sheet Information
Receivables and Allowance for Credit Losses
Receivables as of June 30, 2025 and December 31, 2024 are as follows:
(in thousands)June 30,
2025
December 31,
2024
Receivables
Trade$152,430 $112,169 
Other12,705 13,799 
Unbilled Receivables18,045 21,916 
Total Receivables183,180 147,884 
Less: Allowance for Credit Losses2,357 1,920 
Receivables, net of allowance for credit losses$180,823 $145,964 
The following is a summary of activity in the allowance for credit losses for the six months ended June 30, 2025 and 2024:
Six Months Ended June 30,
(in thousands)20252024
Beginning Balance, January 1$1,920 $2,522 
Additions Charged to Expense880 471 
Reductions for Amounts Written Off, Net of Recoveries(443)(967)
Ending Balance, June 30
$2,357 $2,026 
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Inventories
Inventories consist of the following as of June 30, 2025 and December 31, 2024:
(in thousands)June 30,
2025
December 31,
2024
Raw Material, Fuel and Supplies$39,693 $43,345 
Work in Process22,012 22,637 
Finished Goods89,853 82,903 
Total Inventories$151,558 $148,885 
Investments
The following is a summary of our investments as of June 30, 2025 and December 31, 2024:
(in thousands)June 30,
2025
December 31,
2024
Short-term Investments
Government Debt Securities
$275 $753 
Long-term Investments
Corporate-Owned Life Insurance Policies48,225 47,895 
Government Debt Securities
61,643 60,378 
Corporate Debt Securities
1,684 1,628 
Mutual Funds15,338 10,653 
Money Market Funds1,372 596 
Other Investments27 27 
Total Long-term Investments
128,289 121,177 
Total Investments$128,564 $121,930 
Debt Securities. The following table summarizes the amortized cost and fair value of available-for-sale debt securities and the corresponding amounts of gross unrealized gains and losses as of June 30, 2025 and December 31, 2024:
June 30, 2025
(in thousands)
Amortized Cost
Gross Unrealized Gains
Gross Unrealized (Losses)
Fair Value
Government Debt Securities$61,408 $589 $(79)$61,918 
Corporate Debt Securities1,672 17 (5)1,684 
Total
$63,080 $606 $(84)$63,602 
December 31, 2024
(in thousands)
Amortized Cost
Gross Unrealized Gains
Gross Unrealized (Losses)
Fair Value
Government Debt Securities$60,891 $424 $(184)$61,131 
Corporate Debt Securities1,629 9 (10)1,628 
Total
$62,520 $433 $(194)$62,759 
As of June 30, 2025 and December 31, 2024, no unrealized losses on debt securities were deemed to be other-than-temporary.
The following table summarizes the fair value of available-for-sale debt securities by contractual maturity date as of June 30, 2025:
(in thousands)June 30, 2025
Due in one year or less
$275 
Due in one to five years
63,327 
Total$63,602 
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Equity Securities. The amount of net unrealized gains and losses during the six months ended June 30, 2025 and 2024 on marketable equity securities still held as of June 30, 2025 and 2024 was not material.
Property, Plant and Equipment
Major classes of property, plant and equipment as of June 30, 2025 and December 31, 2024 include:
(in thousands)June 30,
2025
December 31,
2024
Electric Plant  
Electric Plant in Service$3,223,451 $3,180,943 
Construction Work in Progress273,266 231,890 
Total Gross Electric Plant3,496,717 3,412,833 
Less Accumulated Depreciation and Amortization917,960 899,049 
Net Electric Plant2,578,757 2,513,784 
Nonelectric Property, Plant and Equipment
Nonelectric Property, Plant and Equipment in Service397,895 362,565 
Construction Work in Progress12,343 40,536 
Total Gross Nonelectric Property, Plant and Equipment410,238 403,101 
Less Accumulated Depreciation and Amortization234,927 224,425 
Net Nonelectric Property, Plant and Equipment175,311 178,676 
Net Property, Plant and Equipment$2,754,068 $2,692,460 
5. Regulatory Matters
Regulatory Assets and Liabilities
The following presents our current and long-term regulatory assets and liabilities as of June 30, 2025 and December 31, 2024 and the period we expect to recover or refund such amounts:
Period ofJune 30, 2025December 31, 2024
(in thousands)Recovery/RefundCurrentLong-TermCurrentLong-Term
Regulatory Assets
Pension and Other Postretirement Benefit Plans1
Various$ $87,508 $ $88,161 
Alternative Revenue Program Riders2
Up to 2 years
4,982 98 4,257 195 
Deferred Income Taxes1
Asset lives 9,299  8,944 
Fuel Clause Adjustments1
Up to 1 year
2,036  2,218  
Derivative Instruments1
Up to 2 years
902 822 1,989  
Other1
Various1,026 1,283 1,498 1,373 
Total Regulatory Assets$8,946 $99,010 $9,962 $98,673 
Regulatory Liabilities
Deferred Income TaxesAsset lives$ $126,602 $ $130,387 
Plant Removal ObligationsAsset lives 126,522  126,263 
Fuel Clause Adjustments
Up to 1 year
4,971  11,432  
Alternative Revenue Program Riders
Up to 1 year
14,724  14,255  
North Dakota PTC RefundsAsset lives 24,766  20,099 
Pension and Other Postretirement Benefit PlansVarious2,547 9,977 2,547 10,758 
OtherVarious2,338 1,679 1,073 1,421 
Total Regulatory Liabilities$24,580 $289,546 $29,307 $288,928 
1Costs subject to recovery without a rate of return.
2Amounts eligible for recovery includes an incentive or rate of return.
South Dakota Rate Case
On June 4, 2025, Otter Tail Power (OTP) filed a request with the South Dakota Public Utilities Commission (SDPUC) for an increase in revenue recoverable under general rates in South Dakota. In its filing, OTP requested a net increase in annual revenue of $5.7 million, or 12.50%, based on an allowed rate of return on rate base of 8.29% and an allowed rate of return on equity (ROE) of 10.80% on an equity ratio of 53.54% of total capital. Through this proceeding, OTP has proposed changes to the mechanism of
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certain cost and investment recovery, with recovery moving from riders into base rates. The SDPUC will establish a schedule for making its decision on the company’s request. If the SDPUC does not issue its decision within 180 days, OTP can increase rates on an interim basis beginning December 1, 2025. These interim rate revenues, when collected, are subject to potential refund until the finalization of the rate case.
6. Short-Term and Long-Term Borrowings
The following is a summary of our outstanding short- and long-term borrowings by borrower, OTC or OTP, as of June 30, 2025 and December 31, 2024:
Short-Term Debt
The following is a summary of our lines of credit as of June 30, 2025 and December 31, 2024:
June 30, 2025December 31, 2024
(in thousands)Borrowing LimitAmount OutstandingLetters
of Credit
Amount AvailableAmount Available
OTC Credit Agreement$170,000 $ $ $170,000 $170,000 
OTP Credit Agreement220,000  9,022 210,978 141,613 
Total$390,000 $ $9,022 $380,978 $311,613 
Borrowings under each credit facility are subject to a variable rate of interest on outstanding balances and a commitment fee is charged based on the average unused amount available to be drawn under the respective facility. The variable rate of interest to be charged is based on a benchmark interest rate, either the Secured Overnight Financing Rate (SOFR) or a Base Rate, as defined in the credit agreements, selected by the borrower at the time of an advance, subject to the conditions of each agreement, plus an applicable credit spread. The credit spread ranges from zero to 2.00%, depending on the benchmark interest rate selected, and is subject to adjustment based on the credit ratings of the relevant borrower. There were no outstanding borrowings on either credit facility as of June 30, 2025. The weighted-average interest rate on all outstanding borrowings as of December 31, 2024 was 5.61%.
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Long-Term Debt
The following is a summary of outstanding long-term debt by borrower as of June 30, 2025 and December 31, 2024: 
(in thousands)
BorrowerDebt InstrumentRateMaturityJune 30,
2025
December 31,
2024
OTCGuaranteed Senior Notes3.55 %12/15/26$80,000 $80,000 
OTPSeries 2007C Senior Unsecured Notes6.37 %08/02/2742,000 42,000 
OTPSeries 2013A Senior Unsecured Notes4.68 %02/27/2960,000 60,000 
OTPSeries 2019A Senior Unsecured Notes3.07 %10/10/2910,000 10,000 
OTPSeries 2020A Senior Unsecured Notes3.22 %02/25/3010,000 10,000 
OTPSeries 2020B Senior Unsecured Notes3.22 %08/20/3040,000 40,000 
OTPSeries 2021A Senior Unsecured Notes2.74 %11/29/3140,000 40,000 
OTPSeries 2024A Senior Unsecured Notes5.48 %04/01/3460,000 60,000 
OTPSeries 2025A Senior Unsecured Notes5.49 %03/27/3550,000  
OTPSeries 2007D Senior Unsecured Notes6.47 %08/20/3750,000 50,000 
OTPSeries 2019B Senior Unsecured Notes3.52 %10/10/3926,000 26,000 
OTPSeries 2020C Senior Unsecured Notes3.62 %02/25/4010,000 10,000 
OTPSeries 2013B Senior Unsecured Notes5.47 %02/27/4490,000 90,000 
OTPSeries 2018A Senior Unsecured Notes4.07 %02/07/48100,000 100,000 
OTPSeries 2019C Senior Unsecured Notes3.82 %10/10/4964,000 64,000 
OTPSeries 2020D Senior Unsecured Notes3.92 %02/25/5015,000 15,000 
OTPSeries 2021B Senior Unsecured Notes3.69 %11/29/51100,000 100,000 
OTPSeries 2022A Senior Unsecured Notes3.77 %05/20/5290,000 90,000 
OTPSeries 2024B Senior Unsecured Notes5.77 %04/01/5460,000 60,000 
OTPSeries 2025B Senior Unsecured Notes5.98 %06/05/5550,000  
Total1,047,000 947,000 
Less:Unamortized Long-Term Debt Issuance Costs3,626 3,266 
Total Long-Term Debt, Net of Unamortized Debt Issuance Costs$1,043,374 $943,734 
On March 27, 2025, OTP entered into a Note Purchase Agreement pursuant to which OTP issued, in a private placement transaction, $100.0 million of senior unsecured notes consisting of (a) $50.0 million of 5.49% Series 2025A Senior Unsecured Notes due March 27, 2035, and (b) $50.0 million of 5.98% Series 2025B Senior Unsecured Notes due June 5, 2055. The Series 2025A Notes were issued on March 27, 2025, upon entering into the agreement. The Series 2025B Notes were issued on June 5, 2025.
Per the terms of the agreement, OTP may prepay all or any part of the notes (in an amount not less than 10% of the aggregate principal amount of the notes then outstanding in the case of a partial prepayment) at 100% of the principal amount so prepaid, together with unpaid accrued interest and a make-whole amount, as defined in the agreement; provided that no default or event of default exists under the agreement. Any prepayment of the Series 2025A Notes then outstanding on or after December 27, 2034, or the Series 2025B Notes then outstanding on or after December 5, 2054, will be made without any make-whole amount. Consistent with other of our borrowings, the agreement contains a number of restrictions on the business of OTP, including restrictions on OTP’s ability to merge, sell substantially all assets, create or incur liens on assets, guarantee the obligations of any other party, and engage in certain transactions with affiliates.
Financial Covenants
Certain of OTC's and OTP's short- and long-term debt agreements require the borrower, whether OTC or OTP, to maintain certain financial covenants, including a maximum debt to total capitalization ratio of 0.60 to 1.00 or 0.65 to 1.00, depending on the debt agreement, a minimum interest and dividend coverage ratio of 1.50 to 1.00, and a maximum level of priority indebtedness. As of June 30, 2025, OTC and OTP were in compliance with these financial covenants.
7. Employee Postretirement Benefits
Pension Plan and Other Postretirement Benefits
The Company sponsors a noncontributory funded pension plan (the Pension Plan), an unfunded, nonqualified Executive Survivor and Supplemental Retirement Plan (the ESSRP), both accounted for as defined benefit pension plans, and a postretirement healthcare plan accounted for as an other postretirement benefit plan.
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The following tables include the components of net periodic benefit cost (income) related to our defined benefit pension plans and other postretirement benefits for the three and six months ended June 30, 2025 and 2024:
Three Months Ended June 30,
Pension Benefits (Pension Plan)Pension Benefits (ESSRP)Postretirement Benefits
(in thousands)202520242025202420252024
Service Cost$875 $971 $ $ $122 $122 
Interest Cost4,326 4,297 473 474 402 400 
Expected Return on Assets(6,191)(6,379)    
Amortization of Prior Service Cost    (949)(1,575)
Amortization of Net Actuarial Loss336 39     
Net Periodic Benefit Cost (Income)$(654)$(1,072)$473 $474 $(425)$(1,053)
Six Months Ended June 30,
Pension Benefits (Pension Plan)Pension Benefits (ESSRP)Postretirement Benefits
(in thousands)202520242025202420252024
Service Cost$1,751 $1,943 $ $ $245 $245 
Interest Cost8,652 8,594 947 948 805 800 
Expected Return on Assets(12,382)(12,759)    
Amortization of Prior Service Cost    (1,898)(3,151)
Amortization of Net Actuarial Loss671 79     
Net Periodic Benefit Cost (Income)$(1,308)$(2,143)$947 $948 $(848)$(2,106)
The following table includes the impact of regulation on the recognition of periodic benefit cost (income) arising from pension and other postretirement benefits for the three and six months ended June 30, 2025 and 2024:
Three Months Ended June 30,Six Months Ended June 30,
(in thousands)2025202420252024
Net Periodic Benefit Cost (Income)$(606)$(1,651)$(1,209)$(3,301)
Net Amount Amortized Due to the Effect of Regulation749 356 1,069 659 
Net Periodic Benefit Cost (Income) Recognized$143 $(1,295)$(140)$(2,642)
We had no minimum funding requirements for our Pension Plan or any other postretirement benefit plans as of December 31, 2024. We did not make any contributions to our Pension Plan during the six months ended June 30, 2025 and 2024.
8. Income Taxes
The Company's effective tax rate was 14.9% and 19.2% for the three months ended June 30, 2025 and 2024 and 14.0% and 19.2% for the six months ended June 30, 2025 and 2024. These rates differ from the federal statutory rate of 21% primarily due to the impact of production tax credits (PTCs) associated with the energy generation of our wind and solar assets, partially offset by the impact of state taxes. The decrease in our effective tax rate was primarily the result of an increase in PTCs compared to last year, which was driven by increased wind generation from our facilities which qualify for PTCs, including the completion of our first wind repowering project in late 2024, which triggered the commencement of PTCs from this facility.
One Big Beautiful Bill Act
On July 4, 2025, broad spending and tax law legislation referred to as the One Big Beautiful Bill Act (OBBBA) was enacted in the U.S. The aspects of the law that may impact our financial position and future investment opportunities include changes to existing renewable energy credits and certain corporate income tax changes.
The OBBBA alters the timing and eligibility of certain tax credits for renewable energy projects. Wind and solar projects that begin construction by July 3, 2026 are eligible for technology-neutral tax credits (production tax credits or investment tax credits). Projects that begin construction after July 4, 2026 must be in service by December 31, 2027 to qualify for technology-neutral tax credits. For projects that begin construction after December 31, 2025, new provisions restrict tax credit eligibility for those projects involving material assistance or effective control by a Foreign Entity of Concern, as defined in the legislation, which includes entities linked to China, Russia, Iran or North Korea.
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The OBBBA also includes changes to corporate income tax rules and regulations, including reinstating 100% bonus depreciation, immediate expensing of domestic research and development costs, and modifications to the business interest expense limitation.
The effects of changes in tax laws and regulations are required to be recognized in our financial statements in the period of enactment. Consequently, as of the date of enactment and during the three months ended September 30, 2025, the Company will recognize the impact of the newly enacted tax law. We are currently assessing its impact on our consolidated financial statements.
9. Commitments and Contingencies
Commitments
Solar Development. On October 30, 2024, OTP entered into an agreement to acquire the assets of a solar facility currently under development. The assets to be acquired include real property rights and interests, interconnection agreements, state and local permits, and other development assets. Per the agreement, the purchase price is equal to $23.6 million, plus the reimbursement of certain interconnection costs and costs to purchase and store the main power transformer. Closing of the transaction is expected to occur in late 2025 or early 2026, and remains subject to certain conditions to close, including regulatory and other approvals. Under certain conditions, OTP would be subject to a termination fee of up to $5.0 million if the seller has satisfied all required conditions to close but the transaction is not consummated.
Contingencies
Self-Funding of Transmission Upgrades for Generator Interconnections. The Federal Energy Regulatory Commission (FERC) has granted transmission owners within Midcontinent Independent System Operator, Inc. (MISO) and other regional transmission organizations (RTOs) the unilateral authority to determine the funding mechanism for interconnection transmission upgrades that are necessary to accommodate new generation facilities connecting to the electrical grid. Under existing FERC orders, transmission owners can unilaterally determine whether the generator pays the transmission owner in advance for the transmission upgrade or, alternatively, the transmission owner can elect to fund the upgrade and recover over time from the generator the cost of and a return on the upgrade investment (a self-funding). FERC’s orders granting transmission owners this unilateral funding authority have been judicially contested on the basis that transmission owners may be motivated to discriminate among generators in making funding determinations. In the most recent judicial proceedings, the petitioners argued to the U.S. Court of Appeals for the District of Columbia that FERC did not comply with a previous judicial order to fully develop a record regarding the risk of discrimination and the financial risk absorbed by transmission owners for generator-funded upgrades. In December 2022, the Court of Appeals ruled in favor of the petitioners remanding the matter to FERC, instructing the agency to adequately explain the basis of its orders. The Court of Appeals decision did not vacate transmission owners’ unilateral funding authority.
In June 2024, FERC issued an Order to Show Cause proceeding against four RTOs, including MISO. Within its order, FERC indicates that the transmission tariffs of the RTOs appear to be unjust, unreasonable, and unduly discriminatory or preferential because they allow transmission owners to unilaterally elect transmission owner self-funding, which may increase costs, impose barriers to transmission interconnection and result in undue discrimination among interconnection customers.
The order required each RTO to submit filings to either 1) show cause as to why the transmission tariff remains just and reasonable and not duly discriminatory or preferential, or 2) explain what changes to the tariff it believes would remedy the identified concerns. FERC has received a number of responses to its Order to Show Cause. In September 2024, in separate filings, MISO and transmission owners within MISO, including OTP, filed responses outlining the reasons why the self-funding option remains just and reasonable and not unduly discriminatory or preferential. Other responses have been provided by other RTOs, individual transmission owners, developers of renewable generation facilities and other interested parties.
OTP, as a transmission owner in MISO, has exercised its authority and elected to self-fund transmission upgrades necessary to accommodate new system generation. Under such an election, OTP is recovering the cost of the transmission upgrade and a return on that investment from the generator over a contractual period of time. Should the resolution of this matter eliminate transmission owners’ unilateral funding authority on either a prospective or retrospective basis, our financial results would be impacted. We cannot at this time reasonably predict the outcome of this matter given the uncertainty as to how FERC may ultimately decide on the matter after the RTOs' filings in response to the Order to Show Cause.
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Class Action Lawsuits and Related Matters. Several class action complaints on behalf of direct and indirect purchasers of PVC municipal water pipe and electrical conduit pipe have been filed in the U.S. District Court for the Northern District of Illinois alleging violations of antitrust laws. These complaints have been filed against certain PVC pipe manufacturers, including OTC, as well as Oil Price Information Systems, LLC (OPIS), a reporting service that provides pricing and market data in various industries, including the PVC pipe industry, during the relevant period. The first of these complaints was filed in August 2024. The various complaints have been consolidated under the caption In re: PVC Pipe Antitrust Litigation (Case No. 1:24-cv-07639). The complaints allege, among other things, that beginning in at least January 2021, the defendants and alleged co-conspirators conspired and combined to fix, raise, maintain and stabilize the price of PVC municipal water and electrical conduit pipe in violation of U.S. federal and state antitrust laws, through direct communications with each other as well as indirect communications through reports published by OPIS. Three classes of plaintiffs have been established in the case; i) direct purchasers, ii) non-converter sellers, and iii) non-converter end users. The plaintiffs are seeking treble damages, injunctive relief, pre- and post-judgment interest, costs and attorneys’ fees.
In July 2025, the judge preliminarily approved a settlement agreement among the direct purchaser and non-converter seller plaintiffs' and OPIS. The settlement agreement resolved claims against OPIS and provides for its cooperation with the plaintiffs.
In August 2024, the Company also received a grand jury subpoena issued by the U.S. District Court for the Northern District of California, from the U.S. Department of Justice (DOJ) Antitrust Division. The subpoena calls for production of documents regarding the manufacturing, selling and pricing of PVC pipe. The Company is responding to the subpoena and intends to comply with its obligations under the subpoena.
At this time, we are unable to determine the likelihood of an outcome or estimate a range of reasonably possible losses, if any, arising from the class action complaints or the DOJ investigation. However, if an antitrust violation by the Company is found, it could have a material impact on the Company’s financial condition, operating results and liquidity. The Company believes that there are factual and legal defenses to the allegations in the complaints and intends to defend itself accordingly.
On May 20, 2025, the Otter Tail Corporation Board of Directors received a letter from counsel submitted on behalf of a shareholder, demanding the Board investigate and take legal action against certain current and former directors and officers of the Company. The derivative demand letter includes alleged securities law violations and breach of fiduciary duties and unjust enrichment against certain current and former officers and directors of the company in connection with the matters at issue in the pending civil antitrust cases. At this time, we are unable to determine the likelihood of any outcome related to this matter.
Other Contingencies. We are party to litigation and regulatory matters arising in the normal course of business. We regularly analyze relevant information and, as necessary, estimate and record accrued liabilities for legal, regulatory enforcement and other matters in which a loss is probable of occurring and can be reasonably estimated. We believe the effect on our consolidated operating results, financial position and cash flows, if any, for the disposition of all matters pending as of June 30, 2025, other than those discussed above, will not be material.
10. Shareholders' Equity
Registration Statements
On May 3, 2024, we filed a shelf registration statement with the SEC under which we may offer for sale, from time to time, either separately or together in any combination, equity, debt or other securities described in the shelf registration statement. No new debt or equity has been issued pursuant to the registration statement. The registration statement expires in May 2027.
On May 3, 2024, we filed a second registration statement with the SEC for the issuance of up to 1,500,000 common shares under an Automatic Dividend Reinvestment and Share Purchase Plan, which provides shareholders, retail customers of OTP and other interested investors methods of purchasing our common shares by reinvesting their dividends or making optional cash investments. Shares purchased under the plan may be newly issued common shares or common shares purchased on the open market. During the six months ended June 30, 2025, we issued 50,512 shares under this plan. We repurchased a sufficient number of shares on the open market to satisfy all issuances under the plan; accordingly, no proceeds were received as a result of the issuance of these shares. As of June 30, 2025, there were 1,379,019 shares available for purchase or issuance under the plan. The registration statement expires in May 2027.
Dividend Restrictions
OTC is a holding company with no significant operations of its own. The primary source of funds for payments of dividends to OTC's shareholders is from dividends paid or distributions made by OTC's subsidiaries. As a result of certain statutory limitations or regulatory or financing agreements, the amount of distributions allowed to be made by OTC's subsidiaries or the amount of dividends paid by OTC could be restricted. Both the OTC Credit Agreement and the OTP Credit Agreement contain restrictions on the payment of cash dividends upon a default or event of default, including failure to maintain certain financial covenants. As of June 30, 2025, we were in compliance with these financial covenants.
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Under the Federal Power Act, a public utility may not pay dividends from any funds properly included in a capital account. What constitutes “funds properly included in a capital account” is undefined in the Federal Power Act or the related regulations; however, the FERC has consistently interpreted the provision to allow dividends to be paid as long as i) the source of the dividends is clearly disclosed, ii) the dividend is not excessive and iii) there is no self-dealing on the part of corporate officials.
The Minnesota Public Utilities Commission (MPUC) indirectly limits the amount of dividends OTP can pay to OTC by requiring an equity-to-total-capitalization ratio between 47.2% and 57.7% based on OTP’s current capital structure requirements. As of June 30, 2025, OTP’s equity-to-total-capitalization ratio, including short-term debt, was 54.9% and its net assets restricted from distribution totaled approximately $861 million. Under the MPUC order, total capitalization for OTP cannot exceed $2.2 billion.
11. Accumulated Other Comprehensive Income (Loss)
The following presents the changes in accumulated other comprehensive income (loss) for the three and six months ended June 30, 2025 and 2024:
Three Months Ended June 30,
20252024
(in thousands)Pension and Other Postretirement Benefits
Net Unrealized Gains (Losses) on Available-for-Sale Securities
TotalPension and Other Postretirement BenefitsNet Unrealized Gains (Losses) on Available-for-Sale SecuritiesTotal
Balance, Beginning of Period$362 $372 $734 $1,301 $(240)$1,061 
Other Comprehensive Income (Loss) Before Reclassifications, net of tax
 24 24  (220)(220)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)(12)
(1)
(12)
(2)
(24)(29)
(1)
(49)
(2)
(78)
Total Other Comprehensive Income (Loss)
(12)12  (29)(269)(298)
Balance, End of Period$350 $384 $734 $1,272 $(509)$763 
Six Months Ended June 30,
20252024
(in thousands)Pension and Other Postretirement Benefits
Net Unrealized Gains (Losses) on Available-for-Sale Securities
TotalPension and Other Postretirement BenefitsNet Unrealized Gains (Losses) on Available-for-Sale SecuritiesTotal
Balance, Beginning of Period$373 $159 $532 $1,375 $(227)$1,148 
Other Comprehensive Income (Loss) Before Reclassifications, net of tax 234 234  (244)(244)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)(23)
(1)
(9)
(2)
(32)(103)
(1)
(38)
(2)
(141)
Total Other Comprehensive Income (Loss)(23)225 202 (103)(282)(385)
Balance, End of Period$350 $384 $734 $1,272 $(509)$763 
(1) Included in the computation of net periodic pension and other postretirement benefit costs. See Note 7.
(2) Included in other income (expense), net on the accompanying consolidated statements of income.
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12. Share-Based Payments
Stock Compensation Expense
Stock-based compensation expense arising from our employee stock purchase plan and share-based compensation plans recognized within operating expenses in the consolidated statements of income amounted to $1.6 million and $1.3 million for the three months ended June 30, 2025 and 2024 and $7.4 million and $6.8 million for the six months ended June 30, 2025 and 2024.
Restricted Stock Awards. Restricted stock awards are granted to executive officers and other key employees and members of the Company's Board of Directors. The awards vest, depending on award recipient, either ratably over a period of three or four years or cliff vest after four years. Vesting is accelerated in certain circumstances, including upon retirement. Awards granted to members of the Board of Directors are issued and outstanding upon grant and carry the same voting and dividend rights of unrestricted outstanding common stock. Awards granted to executive officers are eligible to receive dividend equivalent payments during the vesting period, subject to forfeiture under the terms of the agreement, but such awards are not issued or outstanding upon grant and do not provide for voting rights.
The grant-date fair value of each restricted stock award is determined based on the market price of the Company's common stock on the date of grant adjusted to exclude the value of dividends for those awards that do not receive dividend or dividend equivalent payments during the vesting period.
The following is a summary of stock award activity for the six months ended June 30, 2025:
SharesWeighted-Average
Grant-Date
Fair Value
Nonvested, January 1, 2025
143,417 $68.47 
Granted51,735 74.72 
Vested(46,443)59.73 
Forfeited(600)67.92 
Nonvested, June 30, 2025
148,109 $73.40 
The fair value of vested awards was $3.5 million and $4.4 million during the six months ended June 30, 2025 and 2024.
Stock Performance Awards. Stock performance awards are granted to executive officers and certain other key employees. The awards vest at the end of a three-year performance period. The number of common shares awarded, if any, at the end of the performance period ranges from zero to 150% of the target amount based on two performance measures: i) total shareholder return relative to a peer group and ii) ROE. Vesting of the awards is accelerated in certain circumstances, including upon retirement. The number of common shares awarded on an accelerated vesting is based on actual performance at the end of the performance period.
The grant-date fair value of stock performance awards granted during the six months ended June 30, 2025 and 2024 was determined using a Monte Carlo fair value simulation model incorporating the following assumptions:
20252024
Risk-free interest rate4.28 %4.16 %
Expected term (in years)33
Expected volatility30.30 %35.10 %
Dividend yield2.50 %2.40 %
The risk-free interest rate was derived from yields on U.S. government bonds of a similar term. The expected term of the award is equal to the three-year performance period. Expected volatility was estimated based on actual historical volatility of our common stock. Dividend yield was estimated based on historical and future yield estimates.
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The following is a summary of stock performance award activity for the six months ended June 30, 2025 (share amounts reflect awards at target):
 SharesWeighted-Average
Grant-Date
Fair Value
Nonvested, January 1, 2025
144,800 $68.85 
Granted57,000 73.90 
Vested(49,000)53.93 
Forfeited  
Nonvested, June 30, 2025
152,800 $75.52 
The fair value of vested awards was $5.5 million and $11.1 million during the six months ended June 30, 2025 and 2024, respectively.
13. Earnings Per Share
The numerator used in the calculation of both basic and diluted earnings per share is net income. The denominator used in the calculation of basic earnings per share is the weighted-average number of shares outstanding during the period. The denominator used in the calculation of diluted earnings per share is derived by adjusting basic shares outstanding for the dilutive effect of potential shares outstanding, which consist of time- and performance-based stock awards and employee stock purchase plan shares.
The following includes the computation of the denominator for basic and diluted weighted-average shares outstanding for the three and six months ended June 30, 2025 and 2024:
Three Months Ended June 30,Six Months Ended June 30,
(in thousands)2025202420252024
Weighted-Average Common Shares Outstanding – Basic41,874 41,784 41,850 41,754 
Effect of Dilutive Securities:
Stock Performance Awards154 193 143 194 
Restricted Stock Awards88 89 95 100 
Employee Stock Purchase Plan
2 2 2 3 
Dilutive Effect of Potential Common Shares244 284 240 297 
Weighted-Average Common Shares Outstanding – Diluted42,118 42,068 42,090 42,051 
The number of shares excluded from diluted weighted-average common shares outstanding because such shares were anti-dilutive was not material for the three and six months ended June 30, 2025 and 2024.
14. Derivative Instruments
OTP enters into derivative instruments to manage its exposure to future market energy price variability and reduce price volatility for our retail customers. These derivative instruments are not designated as qualifying hedging transactions but provide for an economic hedge against future market energy price variability. The instruments are recorded at fair value on the consolidated balance sheets. In accordance with rate-making and cost recovery processes, we recognize a regulatory asset or liability to defer losses or gains from derivative activity until settlement of the associated derivative instrument.
As of June 30, 2025, OTP had multiple outstanding pay-fixed, receive-variable swap agreements with various settlement dates extending to December 31, 2026. The following presents the notional amounts and fair value of our derivative instruments as of June 30, 2025 and December 31, 2024:
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(in thousands)
June 30,
2025
December 31,
2024
Megawatt hours of electricity
347167
Derivative Assets:
Other Current Assets
$746 $ 
Derivative Liabilities:
Other Current Liabilities
902 1,989 
Other Noncurrent Liabilities
822  
Total Derivative Liabilities
$1,724 $1,989 
During the six months ended June 30, 2025 and 2024, contracts matured and were settled resulting in losses of $2.6 million and $2.7 million, respectively. Gains and losses recognized on the settlement of derivative instruments are returned to or recovered from our electric customers through fuel recovery mechanisms in each state. When recognized in the consolidated statements of income, these gains or losses are included in electric purchased power. Gains or losses related to the settlement of derivative instruments are included in cash flows from operations in the consolidated statements of cash flows.
15. Fair Value Measurements
The following tables present our assets and liabilities measured at fair value on a recurring basis as of June 30, 2025 and December 31, 2024 classified by the input method used to measure fair value:
(in thousands)Level 1Level 2Level 3
June 30, 2025
Assets:
Investments:
Money Market Funds$1,372 $ $ 
Mutual Funds15,338   
Corporate Debt Securities 1,684  
Government Debt Securities
 61,918  
Derivative Instruments 746  
Total Assets16,710 64,348  
Liabilities:
Derivative Instruments 1,724  
Total Liabilities$ $1,724 $ 
December 31, 2024
Assets:
Investments:
Money Market Funds$596 $ $ 
Mutual Funds10,653   
Corporate Debt Securities 1,628  
Government Debt Securities
 61,131  
Total Assets11,249 62,759  
Liabilities:
Derivative Instruments 1,989  
Total Liabilities$ $1,989 $ 
Level 1 fair value measurements are based on quoted prices (unadjusted) in active markets for identical assets or liabilities that we have the ability to access at the measurement date.
The level 2 fair value measurements for government and corporate debt securities are determined based on valuations provided by third parties which utilize industry-accepted valuation models and observable market inputs to determine valuation. Some valuations or model inputs used by the pricing service may be based on broker quotes.
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The level 2 fair value measurements for derivative instruments are determined by using inputs such as forward electric commodity prices, adjusted for location differences. These inputs are observable in the marketplace throughout the full term of the instrument, can be derived from observable data, or are supported by observable levels at which transactions are executed in the marketplace.
In addition to assets recorded at fair value on a recurring basis, we also hold financial instruments that are not recorded at fair value in the consolidated balance sheets but for which disclosure of the fair value of these financial instruments is provided.
The following reflects the carrying value and estimated fair value of these assets and liabilities as of June 30, 2025 and December 31, 2024:
 June 30, 2025December 31, 2024
(in thousands)Carrying
Amount
Fair ValueCarrying
Amount
Fair Value
Assets:
Cash and Cash Equivalents$307,241 $307,241 $294,651 $294,651 
Total307,241 307,241 294,651 294,651 
Liabilities:
Short-Term Debt  69,615 69,615 
Long-Term Debt1,043,374 923,102 943,734 806,826 
Total$1,043,374 $923,102 $1,013,349 $876,441 
The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value:
Cash Equivalents: The carrying amount approximates fair value because of the short-term maturity of these instruments. Fair value is determined based on quoted prices in active markets, a Level 1 fair value input.
Short-Term Debt: The carrying amount approximates fair value because the debt obligations are short-term in nature and balances outstanding are subject to variable rates of interest which reset frequently, a Level 2 fair value input.
Long-Term Debt: The fair value of long-term debt is estimated based on current market indications for borrowings of similar maturities with similar terms, a Level 2 fair value input.
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ITEM 2.MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
You should read the following discussion and analysis of our financial condition and results of operations together with our interim financial statements and the related notes appearing under Item 1 of this Quarterly Report on Form 10-Q, and our annual financial statements and the related notes along with the discussion and analysis of our financial condition and results of operations contained in our Annual Report on Form 10-K for the year ended December 31, 2024.
Otter Tail Corporation and its subsidiaries form a diverse group of businesses with operations classified into three segments: Electric, Manufacturing and Plastics. Our Electric segment business is a vertically integrated, regulated utility with generation, transmission and distribution facilities to serve our customers in western Minnesota, eastern North Dakota and northeastern South Dakota. Our Manufacturing segment provides metal fabrication for custom machine parts and metal components and manufactures extruded and thermoformed plastic products. Our Plastics segment manufactures PVC pipe for use in, among other applications, municipal and rural water, wastewater and water reclamation projects.
ECONOMIC CONDITIONS
Broad changes in U.S. trade and tariff policy and potential countermeasures implemented by foreign countries could significantly impact domestic macroeconomic conditions and our business operations. Newly imposed or increased tariffs may cause disruption in our supply chain and increase the cost of our Electric segment capital expenditures, which could impact our capital spending plan or result in delayed or under-recovery of our capital investments. Tariffs on steel and aluminum have increased domestic steel prices, which we expect will impact our Manufacturing segment in the second half of 2025. If we are unable to pass this increased cost on to our customers or if end market demand declines due to elevated pricing, the operating results of our Manufacturing segment would be negatively impacted.
Broader macroeconomic conditions resulting from newly imposed or increased tariffs could include rising inflation and a heightened risk of an economic recession, which could have a more extensive impact on our business. Such impacts may include increased operating and investment costs, reduced demand for electric service, elevated interest rates, and reduced customer demand for our products, which may be impacted by residential and commercial construction levels and the result of customer in-sourcing affecting our metal fabrication business. All of these factors could negatively impact our operating results and financial position.
Currently, we cannot predict the ultimate impact on our business as it is dependent on the extent and duration of changes in U.S. tariff policy and any countermeasures implemented by foreign countries.
RESULTS OF OPERATIONS – QUARTER TO DATE
Provided below is a summary and discussion of our operating results on a consolidated basis followed by a discussion of the operating results of each of our segments: Electric, Manufacturing and Plastics. In addition to the segment results, we provide an overview of our Corporate costs. Our Corporate costs do not constitute a reportable segment, but rather consist of unallocated general corporate expenses, such as corporate staff and overhead costs, the results of our captive insurance company and other items excluded from the measurement of segment performance. Corporate costs are added to operating segment totals to reconcile to totals on our consolidated statements of income.
CONSOLIDATED RESULTS    
The following table summarizes consolidated operating results for the three months ended June 30, 2025 and 2024:
(in thousands)20252024$ change% change
Operating Revenues$333,043 $342,336 $(9,293)(2.7)%
Operating Expenses235,585 231,425 4,160 1.8 
Operating Income97,458 110,911 (13,453)(12.1)
Interest Expense(11,720)(10,202)(1,518)14.9 
Nonservice Components of Postretirement Benefits854 2,388 (1,534)(64.2)
Other Income (Expense), net4,788 4,490 298 6.6 
Income Before Income Taxes91,380 107,587 (16,207)(15.1)
Income Tax Expense13,652 20,592 (6,940)(33.7)
Net Income$77,728 $86,995 $(9,267)(10.7)%
Operating Revenues decreased $9.3 million primarily due to decreased sales volumes in our Manufacturing segment and decreased sales prices in our Plastics segment, partially offset by increased sales volumes in our Plastics segment as well as increased fuel recovery revenue in our Electric segment compared to the same period last year. See our segment disclosures below for additional discussion of items impacting operating revenues.
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Operating Expenses increased $4.2 million due to increased purchased power and fuel costs, operating and maintenance expenses, and depreciation expense in our Electric segment, and the impact of increased sales volumes in our Plastics segment. These increases were partially offset by lower cost of goods sold from decreased sales volumes in our Manufacturing segment and the impact of lower PVC resin costs in our Plastics segment. See our segment disclosures below for additional discussion of items impacting operating expenses.
Interest Expense increased $1.5 million primarily due to the issuance of $100.0 million of long-term debt at OTP during the year, the proceeds of which were used to repay short-term borrowings, fund capital expenditures and support operating activities.
Nonservice Components of Postretirement Benefits decreased by $1.5 million, having a negative impact on net income, primarily due to a decrease in the amortization of plan amendment-related gains and an increase in the amortization of actuarial losses.
Income Tax Expense decreased $6.9 million primarily due to a decrease in income before income taxes, as well as an increase in PTCs at OTP driven by increased wind and solar generation which qualified for credits. Our effective tax rate was 14.9% for the three months ended June 30, 2025 and 19.2% for the same period last year. The decrease in our effective tax rate was primarily driven by an increase in PTCs from our wind and solar generation assets. In late 2024, we completed our first wind repowering project which resulted in the commencement of PTCs associated with the generation from the facility.
ELECTRIC SEGMENT RESULTS
The following table summarizes Electric segment operating results for the three months ended June 30, 2025 and 2024:
(in thousands)20252024$ change% change
Retail Revenues$110,130 $96,382 $13,748 14.3 %
Transmission Services Revenues13,232 12,440 792 6.4 
Wholesale Revenues3,261 1,669 1,592 95.4 
Other Electric Revenues2,108 2,337 (229)(9.8)
Total Operating Revenues128,731 112,828 15,903 14.1 
Production Fuel16,292 12,324 3,968 32.2 
Purchased Power15,497 9,249 6,248 67.6 
Operating and Maintenance Expenses46,804 44,652 2,152 4.8 
Depreciation and Amortization22,278 20,387 1,891 9.3 
Property Taxes4,227 3,619 608 16.8 
Operating Income23,633 22,597 1,036 4.6 
Interest Expense
(10,822)(9,307)(1,515)16.3 
Nonservice Cost Components of Postretirement Benefits1,127 2,630 (1,503)(57.1)
Other Income788 1,164 (376)(32.3)
Income Before Income Taxes14,726 17,084 (2,358)(13.8)
Income Tax Benefit
(4,469)(1,401)(3,068)219.0 
Net Income$19,195 $18,485 $710 3.8 %
20252024change% change
Electric kilowatt-hour (kwh) Sales (in thousands)
  
Retail kwh Sales1,337,696 1,315,504 22,192 1.7 %
Wholesale kwh Sales – Company Generation71,477 57,985 13,492 23.3 
Heating Degree Days460 372 88 23.7 
Cooling Degree Days145 61 84 137.7 %
The operating results of our Electric segment are impacted by fluctuations in weather conditions and the resulting demand for electricity for heating and cooling. The following table shows heating degree days and cooling degree days as a percent of normal for the three months ended June 30, 2025 and 2024.
 20252024
Heating Degree Days86.5 %68.8 %
Cooling Degree Days114.2 %48.8 %
The following table summarizes the estimated effect on diluted earnings per share of the difference in retail kwh sales under actual weather conditions and expected retail kwh sales under normal weather conditions for the three months ended June 30, 2025 and 2024, and between those periods.
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2025 vs
Normal
2025 vs
2024
2024 vs
Normal
Effect on Diluted Earnings Per Share$— $0.03 $(0.03)
Retail Revenues increased $13.7 million primarily due to the following:
A $8.7 million increase in fuel recovery revenues due to an increase in the price of market energy purchases and natural gas, as described below.
A $2.4 million net increase in rider revenues, largely due to the continued recovery of our investment in our wind repowering projects.
A $1.6 million increase from the impact of favorable weather, as the second quarter of 2024 was quite mild in our service territory.
Production Fuel costs increased $4.0 million due to an increase in the price of natural gas and an increase in generation from our natural gas facilities compared to the same period last year, as well as increased coal costs at Coyote Station.
Purchased Power costs increased $6.2 million primarily due to a 60% increase in the cost of purchased power driven by higher market energy costs and natural gas prices.
Operating and Maintenance expenses increased $2.2 million primarily due to expenses related to a planned outage at Coyote Station during the first half of 2025.
Depreciation and Amortization expense increased $1.9 million due to additional assets, including certain wind, transmission and distribution assets, being placed in service.
Interest Expense increased $1.5 million primarily due to the issuance of additional long-term debt in March and June of 2025, totaling $100.0 million, the proceeds of which were primarily used to fund our capital investments. Interest on our credit facility also increased due to an increase in the average outstanding short-term borrowings.
Income Tax Benefit increased $3.1 million primarily due to an increase in PTCs driven by increased wind and solar generation that qualified for PTCs compared to last year. PTCs are generally credited to customers and result in a reduction of operating revenue as well as income taxes.
MANUFACTURING SEGMENT RESULTS
The following table summarizes Manufacturing segment operating results for the three months ended June 30, 2025 and 2024:
(in thousands)20252024$ change% change
Operating Revenues$78,726 $96,684 $(17,958)(18.6)%
Cost of Products Sold (excluding depreciation)59,037 71,797 (12,760)(17.8)
Selling, General, and Administrative Expenses
9,101 10,200 (1,099)(10.8)
Depreciation and Amortization5,523 5,087 436 8.6 
Operating Income5,065 9,600 (4,535)(47.2)
Interest Expense
(627)(631)(0.6)
Other Income1 — — 
Income Before Income Taxes4,439 8,970 (4,531)(50.5)
Income Tax Expense
958 2,135 (1,177)(55.1)
Net Income$3,481 $6,835 $(3,354)(49.1)%
Operating Revenues decreased $18.0 million primarily due to a 9% decrease in sales volumes, with declines experienced primarily in the agriculture, recreational vehicles, lawn and garden, and construction end markets. Sales volumes were down at our metal fabrication business due to soft end market demand and inventory management efforts by manufacturers and dealers. A 7% decrease in steel costs, which are passed through to customers, also contributed to the decrease in operating revenues.
Cost of Products Sold decreased $12.8 million largely due to lower sales volumes and enhanced profit margins in the second quarter of 2024, which benefited from the positive impact of the timing of pass-through steel cost fluctuations and the selling of lower cost inventory. Decreased steel costs, as discussed above, also contributed to the decrease in cost of products sold.
Selling, General, and Administrative Expenses decreased $1.1 million due to variable costs associated with decreased business activity and financial performance during the period.
Income Tax Expense decreased $1.2 million largely due to a decrease in income before income taxes.
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PLASTICS SEGMENT RESULTS
The following table summarizes Plastics segment operating results for the three months ended June 30, 2025 and 2024:
(in thousands)20252024$ change% change
Operating Revenues$125,586 $132,824 $(7,238)(5.4)%
Cost of Products Sold (excluding depreciation)46,929 44,998 1,931 4.3 
Selling, General, and Administrative Expenses
5,035 4,604 431 9.4 
Depreciation and Amortization1,588 1,133 455 40.2 
Operating Income72,034 82,089 (10,055)(12.2)
Interest Expense
(246)(151)(95)62.9 
Other Income (1)(100.0)
Income Before Income Taxes71,788 81,939 (10,151)(12.4)
Income Tax Expense
18,684 21,327 (2,643)(12.4)
Net Income$53,104 $60,612 $(7,508)(12.4)%
Operating Revenues decreased $7.2 million primarily due to a 15% decrease in sales prices compared to the same period last year, continuing the steady decline in product pricing from peak market conditions in late 2022. The impact of decreased sales prices was partially offset by an 11% increase in sales volumes, driven by strong distributor and end-market demand for our products, coupled with increased production capacity following the completion of our expansion project at Vinyltech in late 2024. Active infrastructure investment and construction activity across our sales territories continue to contribute to strong demand for our products.
Cost of Products Sold increased $1.9 million primarily due to increased sales volumes, as described above. Partially offsetting the impact of increased sales volumes is a reduction in the cost of PVC resin. The cost of PVC resin decreased 15% compared to the same period last year, driven by global supply and demand dynamics which continues to result in elevated supply.
Income Tax Expense decreased $2.6 million due to a decrease in income before income taxes.
CORPORATE COSTS
The following table summarizes Corporate operating results for the three months ended June 30, 2025 and 2024:
(in thousands)20252024$ change% change
General and Administrative Expenses
$3,216 $3,350 $(134)(4.0)%
Depreciation and Amortization58 25 33 132.0 
Operating Loss(3,274)(3,375)101 (3.0)
Interest Expense
(25)(113)88 (77.9)
Nonservice Cost Components of Postretirement Benefits(273)(242)(31)12.8 
Other Income3,999 3,324 675 20.3 
Net Loss Before Income Taxes
427 (406)833 (205.2)
Income Tax Benefit
(1,521)(1,469)(52)3.5 
Net Loss
$1,948 $1,063 $885 83.3 %
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RESULTS OF OPERATIONS – YEAR TO DATE
CONSOLIDATED RESULTS
The following table summarizes consolidated operating results for the six months ended June 30, 2025 and 2024:
(in thousands)20252024$ change% change
Operating Revenues$670,396 $689,404 $(19,008)(2.8)%
Operating Expenses488,939 483,518 5,421 1.1 
Operating Income181,457 205,886 (24,429)(11.9)
Interest Expense(23,273)(20,052)(3,221)16.1 
Nonservice Components of Postretirement Benefits2,136 4,830 (2,694)(55.8)
Other Income (Expense), net9,244 9,069 175 1.9 
Income Before Income Taxes169,564 199,733 (30,169)(15.1)
Income Tax Expense23,737 38,400 (14,663)(38.2)
Net Income$145,827 $161,333 $(15,506)(9.6)%
Operating Revenues decreased $19.0 million primarily due to decreased sales prices within our Plastics segment and decreased sales volumes in our Manufacturing segment, partially offset by increased fuel recovery revenues and the impacts of favorable weather in our Electric segment. Within our Plastics segment, the impact of decreased sales prices was also largely offset by increased sales volumes. See our segment disclosures below for additional discussion of items impacting operating revenues.
Operating Expenses increased $5.4 million primarily due to increased purchased power and fuel costs, operating and maintenance expenses, and depreciation expense in our Electric segment, and the impact of increased sales volumes in our Plastics segment. These increases were partially offset by lower cost of goods sold from decreased sales volumes in our Manufacturing segment and the impact of lower PVC resin costs in our Plastics segment. See our segment disclosures below for additional discussion of items impacting operating expenses.
Interest Expense increased $3.2 million primarily due to the issuance of $100.0 million of long-term debt at OTP during the year, the proceeds of which were used to repay short-term borrowings, fund capital expenditures and support operating activities.
Nonservice Components of Postretirement Benefits decreased by $2.7 million, having a negative impact on net income, primarily due to a decrease in the amortization of plan amendment-related gains and an increase in the amortization of actuarial losses.
Income Tax Expense decreased $14.7 million primarily due to an increase in PTCs at OTP, driven by increased wind and solar generation which qualified for credits, as well as a decrease in income before income taxes. Our effective tax rate was 14.0% for the six months ended June 30, 2025 and 19.2% for the same period last year. The decrease in our effective tax rate was primarily driven by an increase in PTCs from our wind and solar generation assets.
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ELECTRIC SEGMENT RESULTS
The following table summarizes Electric segment operating results for the six months ended June 30, 2025 and 2024:
(in thousands)20252024$ change% change
Retail Revenues$243,502 $220,871 $22,631 10.2 %
Transmission Services Revenues25,363 24,654 709 2.9 
Wholesale Revenues6,039 5,134 905 17.6 
Other Electric Revenues3,547 3,658 (111)(3.0)
Total Operating Revenues278,451 254,317 24,134 9.5 
Production Fuel30,613 30,018 595 2.0 
Purchased Power46,367 31,771 14,596 45.9 
Operating and Maintenance Expenses95,685 92,630 3,055 3.3 
Depreciation and Amortization44,655 40,273 4,382 10.9 
Property Taxes8,455 7,986 469 5.9 
Operating Income52,676 51,639 1,037 2.0 
Interest Expense(21,479)(18,261)(3,218)17.6 
Nonservice Cost Components of Postretirement Benefits2,682 5,315 (2,633)(49.5)
Other Income1,547 2,038 (491)(24.1)
Income Before Income Taxes35,426 40,731 (5,305)(13.0)
Income Tax Benefit
(8,477)(225)(8,252)n/m
Net Income$43,903 $40,956 $2,947 7.2 %
20252024change% change
Electric kilowatt-hour (kwh) Sales (in thousands)
  
Retail kwh Sales3,010,700 2,896,355 114,345 3.9 %
Wholesale kwh Sales – Company Generation127,652 139,070 (11,418)(8.2)
Heating Degree Days3,911 3,284 627 19.1 
Cooling Degree Days145 61 84 137.7 
The operating results of our Electric segment are impacted by fluctuations in weather conditions and the resulting demand for electricity for heating and cooling. The following table shows heating and cooling degree days as a percent of normal for the six months ended June 30, 2025 and 2024.
 20252024
Heating Degree Days98.9 %82.3 %
Cooling Degree Days114.2 %48.8 %
The following table summarizes the estimated effect on diluted earnings per share of the difference in retail kwh sales under actual weather conditions and expected retail kwh sales under normal weather conditions for the six months ended June 30, 2025 and 2024, and between those periods.
 
2025 vs
Normal
2025 vs
2024
2024 vs
Normal
Effect on Diluted Earnings Per Share$— $0.10 $(0.10)
Retail Revenues increased $22.6 million, primarily due to the following:
A $14.7 million increase in fuel recovery revenues, primarily due to an increase in the cost of purchased power, as well as an increase in the volume of purchased power, as described below.
An $5.3 million increase from the impact of favorable weather.
An increase to rates in North Dakota with the finalization of our recent rate case and the implementation of new rates effective March 15, 2025.
The increases in retail revenues described above were partially offset by a net decrease in renewable rider revenue, driven by increased PTCs from our wind and solar generation, which are passed on to customers.
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Purchased Power costs increased $14.6 million due to a 34% increase in the price of purchased power due to increased market energy costs, as well as a 9% increase in the volume of purchased power due to increased demand resulting from favorable weather.
Operating and Maintenance expenses increased $3.1 million primarily due to expenses related to a planned outage at Coyote Station during the first half of 2025.
Depreciation and Amortization increased $4.4 million due to additional assets, including certain wind, transmission and distribution assets, being placed in service.
Interest Expense increased $3.2 million primarily due to the issuance of additional long-term debt in March 2024, March 2025, and June 2025, totaling $220.0 million, the proceeds of which were primarily used to fund our capital investments.
Income Tax Benefit increased $8.3 million primarily due to an increase in PTCs, driven by increased wind and solar generation that qualified for PTCs compared to last year. PTCs are generally credited to customers and result in a reduction of revenue as well as income taxes.
MANUFACTURING SEGMENT RESULTS
The following table summarizes Manufacturing segment operating results for the six months ended June 30, 2025 and 2024:
(in thousands)20252024$ change% change
Operating Revenues$160,412 $196,065 $(35,653)(18.2)%
Cost of Products Sold (excluding depreciation)123,337 148,709 (25,372)(17.1)
Selling, General, and Administrative Expenses
18,637 20,343 (1,706)(8.4)
Depreciation and Amortization10,946 9,999 947 9.5 
Operating Income7,492 17,014 (9,522)(56.0)
Interest Expense
(1,249)(1,202)(47)3.9 
Other Income (1)(100.0)
Income Before Income Taxes6,243 15,813 (9,570)(60.5)
Income Tax Expense
1,230 3,717 (2,487)(66.9)
Net Income$5,013 $12,096 $(7,083)(58.6)%
Operating Revenues decreased $35.7 million primarily due to an 11% decrease in sales volumes, with declines experienced primarily in the agriculture, recreational vehicles, lawn and garden, and construction end markets. Sales volumes were down at our metal fabrication business due to soft end-market demand and inventory management efforts by manufacturers and dealers. A 5% decrease in steel costs, which are passed through to customers, also contributed to the decrease in operating revenues.
Cost of Products Sold decreased $25.4 million primarily due to decreased sales volumes, as described above.
Selling, General, and Administrative Expenses decreased $1.7 million due to variable costs associated with decreased business activity and financial performance during the period.
Depreciation and Amortization increased $0.9 million due to an increase in our capital investment in manufacturing equipment and our facilities.
Income Tax Expense decreased $2.5 million primarily due to a decrease in income before income taxes.
PLASTICS SEGMENT RESULTS
The following table summarizes Plastics segment operating results for the six months ended June 30, 2025 and 2024:
(in thousands)20252024$ change% change
Operating Revenues$231,533 $239,022 $(7,489)(3.1)%
Cost of Products Sold (excluding depreciation)87,016 82,809 4,207 5.1 
Selling, General, and Administrative Expenses10,473 8,613 1,860 21.6 
Depreciation and Amortization3,135 2,208 927 42.0 
Operating Income130,909 145,392 (14,483)(10.0)
Interest Expense(392)(298)(94)31.5 
Other Income3 27 (24)88.9 
Income Before Income Taxes130,520 145,121 (14,601)(10.1)
Income Tax Expense33,977 37,771 (3,794)(10.0)
Net Income$96,543 $107,350 $(10,807)(10.1)%
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Operating Revenues decreased $7.5 million primarily due to a 13% decrease in sales prices compared to the same period last year, continuing the steady decline in product pricing from peak conditions in late 2022. The impact of decreased sales prices was partially offset by a 12% increase in sales volumes, driven by strong distributor and end market demand for our products, coupled with increased production capacity after the completion of our expansion project at Vinyltech in late 2024. Active infrastructure investment and construction activity across our sales territories continue to contribute to strong demand for our products.
Cost of Products Sold increased $4.2 million primarily due to increased sales volumes, as described above. The cost of PVC resin decreased 11% compared to the prior year, driven by global supply and demand dynamics which continues to result in elevated supply, partially offsetting the impact of increased sales volumes.
Selling, General, and Administrative Expenses increased $1.9 million primarily due to costs associated with ongoing litigation regarding the pricing of PVC pipe, which is further described in Note 9 to the consolidated financial statements.
Income Tax Expense decreased $3.8 million due to a decrease in income before income taxes.
CORPORATE COSTS
The following table summarizes Corporate operating results for the six months ended June 30, 2025 and 2024:
(in thousands)20252024$ change% change
General and Administrative Expenses$9,534 $8,111 $1,423 17.5 %
Depreciation and Amortization86 48 38 79.2 
Operating Loss(9,620)(8,159)(1,461)17.9 
Interest Expense(153)(291)138 (47.4)
Nonservice Cost Components of Postretirement Benefits(546)(485)(61)12.6 
Other Income7,694 7,003 691 9.9 
Net Loss Before Income Taxes(2,625)(1,932)(693)35.9 
Income Tax Benefit(2,993)(2,863)(130)4.5 
Net Loss$368 $931 $(563)(60.4)%
General and Administrative Expenses increased $1.4 million primarily due to increased employee health insurance claim costs, after experiencing a decline in employee medical costs in the first half of 2024.
REGULATORY MATTERS
The following provides a summary of general rates, rate rider and other regulatory filings that have or are expected to have a material impact on our operating results, financial position or cash flows.
GENERAL RATES
North Dakota Rate Case
On December 30, 2024, the North Dakota Public Service Commission approved a settlement agreement between OTP and certain interested parties in their general rate case and issued its written order on final rates. The key provisions of the order include a revenue requirement of $225.6 million, based on a return on rate base of 7.53%, and an allowed ROE of 10.10% on an equity ratio of 53.50%. The net annual revenue requirement includes a net increase of $13.1 million or 6.18%. OTP’s revenue requirement was reduced by approximately $3.0 million primarily due to the inclusion of forecasted PTCs plus adjustments for new customer load additions, which were not included in OTP’s updated request filed on July 3, 2024. Through the settlement of the case, the parties also agreed to establish an earnings-sharing mechanism, whereby 70% of actual earnings in excess of a 10.20% ROE would be returned to customers, with OTP retaining the remaining 30%. New base rates in North Dakota went into effect on March 15, 2025.
South Dakota Rate Case
On June 4, 2025, OTP filed a request with the SDPUC for an increase in revenue recoverable under general rates in South Dakota. In its filing, OTP requested a net increase in annual revenue of $5.7 million, or 12.50%, based on an allowed rate of return on rate base of 8.29% and an allowed ROE of 10.80% on an equity ratio of 53.54% of total capital. Through this proceeding, OTP has proposed changes to the mechanism of certain cost and investment recovery, with recovery moving from riders into base rates. The SDPUC will establish a schedule for making its decision on the company’s request. If the SDPUC does not issue its decision within 180 days, OTP can increase rates on an interim basis beginning December 1, 2025. These interim rate revenues, when collected, are subject to potential refund until the finalization of the rate case.
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RATE RIDERS
The following table includes a summary of pending and recently concluded rate rider proceedings with a significant revenue impact:
RecoveryFilingAmountEffective
MechanismJurisdictionStatusDate(in millions)DateNotes
RRR - 2023
MN
Approved
11/01/22$17.507/01/23
Recovery of Hoot Lake Solar costs, Ashtabula III costs, and true up for PTCs from Merricourt.
ECO - 2023MNApproved04/03/239.710/01/23Recovery of energy conservation improvement costs as well as a demand side management financial incentive.
ECO - 2025
MNRequested04/01/259.511/01/25Recovery of energy conservation improvement costs as well as a demand side management financial incentive.
ECO - 2024MNApproved04/01/248.810/01/24Recovery of energy conservation improvement costs as well as a demand side management financial incentive.
RRR - 2024MNApproved12/04/238.009/01/24
Recovery of Hoot Lake Solar costs, Ashtabula III costs, wind upgrade project costs at our four owned wind facilities, and PTCs related to Merricourt.
EUIC - 2025MNApproved05/03/244.102/01/25Recovery of advanced metering infrastructure, outage management system, geographic information system, and demand response projects.
RRR - 2023NDApproved12/30/2212.205/01/23Recovery of Merricourt, Ashtabula III and other costs.
TCR - 2024NDApproved11/02/234.501/01/24Recovery of transmission project costs.
MDT - 2025
ND
Requested
08/01/253.701/01/26
Recovery of advanced metering infrastructure and demand response projects.
TCR - 2025NDApproved09/16/243.101/01/25Recovery of transmission project costs.
PIR - 2024SDApproved06/03/243.209/01/24
Recovery of Ashtabula III, Merricourt, Astoria Station, wind upgrade projects, advanced grid infrastructure project costs, and impact of load growth credits.
PIR - 2025SD
Approved
12/20/243.209/01/25
Recovery of Ashtabula III, Merricourt, Astoria Station, wind upgrade projects, advanced grid infrastructure project costs, addition of Solway Solar and Abercrombie Solar, and impact of load growth credits.
TCR - 2023
SD
Approved
11/01/223.003/01/23
Recovery of transmission projects.
ENVIRONMENTAL REGULATION
Clean Air Act
In May 2024, the Environmental Protection Agency (EPA) finalized new regulations under Section 111 of the Clean Air Act to regulate greenhouse gas (GHG) emissions from new and existing fossil fuel-fired power plants. The rule establishes carbon dioxide emission reduction requirements for existing coal-fired power plants based on the date the plant will cease operations. Coyote Station and Big Stone Plant are both within the scope of the regulation.
On June 17, 2025, the EPA published a proposed rule that would repeal the existing GHG emission standards for fossil fuel-fired power plants. The proposal includes a finding that GHG emissions from such sources do not significantly contribute to dangerous air pollution, which the EPA asserts is a necessary legal predicate for regulation under the Clean Air Act. As an alternative, the EPA is also proposing to repeal only the emission guidelines applicable to existing fossil fuel-fired steam generating units. The proposed rule is open for public comment until August 7, 2025.
Mercury and Air Toxics Standards
In May 2024, the EPA finalized new amendments to strengthen Mercury and Air Toxics Standards (MATS) for coal-fired power plants, including tightening emission standards for particulate matter and reducing the standard for mercury.
On June 17, 2025, the EPA published a proposed rule to repeal the 2024 MATS for coal-fired power plants. The proposed rule is open for public comment until August 11, 2025.
Regional Haze Rule (RHR)
The EPA adopted the RHR in an effort to improve visibility in certain national parks and wilderness areas. The RHR requires states, in coordination with federal agencies, to develop and implement state implementation plans (SIPs) that work towards achieving natural visibility conditions by the year 2064; to set goals to ensure reasonable progress is being made; and to periodically evaluate whether those goals and progress are on track or whether additional emission reductions are necessary. The second RHR
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implementation period under the rule covers the years 2018-2028, and Coyote Station is subject to assessment in the second implementation period.
The North Dakota Department of Environmental Quality submitted the North Dakota SIP in August 2022. In December 2024, the EPA published its ruling on the North Dakota SIP, partially approving and partially disapproving of the plan. The EPA has two years from the date of publication of its partial disapproval to publish a Federal Implementation Plan, which could include additional emission controls at Coyote Station.
On April 30, 2025, the EPA granted a request to reconsider the December 2024 rule, which included the partial disapproval of the North Dakota SIP.
LIQUIDITY
LIQUIDITY OVERVIEW
We believe our financial condition is strong and our cash and cash equivalents, other liquid assets, operating cash flows, existing lines of credit, access to capital markets, and borrowing ability because of investment-grade credit ratings, when taken together, provide us ample liquidity to conduct our business operations, fund our short- and long-term capital expenditure plans and satisfy our obligations as they become due. Our liquidity, including our operating cash flows and access to capital markets, could be impacted by macroeconomic factors outside of our control, including higher interest rates and debt capital costs, and diminished credit availability. In addition, our liquidity could be impacted by non-compliance with certain financial covenants under our various debt instruments. As of June 30, 2025, we were in compliance with all financial covenants (see the Financial Covenants section under Capital Resources below).
The following table presents the status of our lines of credit as of June 30, 2025:
2025
(in thousands)Borrowing LimitAmount OutstandingLetters
of Credit
Amount Available
OTC Credit Agreement$170,000 $ $ $170,000 
OTP Credit Agreement220,000  9,022 210,978 
Total$390,000 $ $9,022 $380,978 
OTC and OTP are each party to separate credit agreements (the OTC Credit Agreement and OTP Credit Agreement, respectively) which provide for unsecured revolving lines of credit. Should additional liquidity be needed, the OTC Credit Agreement includes an accordion feature allowing us to increase the amount available to $290.0 million, subject to certain terms and conditions. The OTP Credit Agreement also includes an accordion feature allowing OTP to increase that facility to $300.0 million, subject to certain terms and conditions.
As of June 30, 2025, we had $381.0 million of available liquidity under our credit facilities and $307.2 million of available cash and cash equivalents, resulting in total available liquidity of $688.2 million.
CASH FLOWS
The following is a discussion of our cash flows for the six months ended June 30, 2025 and 2024:
(in thousands)20252024
Net Cash Provided by Operating Activities$159,379 $223,461 
Net Cash Provided by Operating Activities decreased $64.1 million for the six months ended June 30, 2025 compared to the six months ended June 30, 2024, primarily due to the timing of fuel cost and rider recoveries from our utility customers, the timing of payments of operating costs and a decrease in earnings. Net cash provided by operating activities in our Electric segment is regularly affected by the timing of payments made for operating costs and the various mechanisms used to recover costs from or return amounts to our utility customers. The timing of recoveries and refunds can vary by the recovery or refund mechanism. Due to the numerous factors that impact the timing of our cash receipts and cash payments, our cash provided by operating activities can vary significantly from our net income for the period.
(in thousands)20252024
Net Cash Used in Investing Activities$127,026 $228,065 
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Net Cash Used in Investing Activities decreased $101.0 million for the six months ended June 30, 2025 compared to the six months ended June 30, 2024. The decrease in cash used in investing activities included a $51.3 million decrease in capital expenditures. Capital expenditures in our Electric segment decreased $31.2 million primarily due to the timing of investments under our five-year capital spending plan. Our expansion projects at Vinyltech and BTD Manufacturing were completed in late 2024, which also contributed to the decrease in our capital expenditures compared to last year. Investing activities during the six months ended June 30, 2024, also included a $50.1 million investment in U.S. treasuries made to secure a fixed rate of return until their maturity in September 2026.
(in thousands)20252024
Net Cash (Used in) Provided by Financing Activities
$(19,763)$4,903 
Net Cash (Used in) Provided by Financing Activities for the six months ended June 30, 2025 included the issuance of $100.0 million of long-term debt at OTP, the proceeds of which were used to repay short-term borrowings under the OTP credit agreement, fund Electric segment construction expenditures and support operating activities. We manage the capital structure of OTP independent from our consolidated financial position to ensure compliance with the capital structure approved through regulation; therefore, our decision to issue long-term debt at OTP is not impacted by our consolidated cash and cash equivalent position.
Financing activities for the six months ended June 30, 2025 also included net repayments of short-term borrowings of $69.6 million and dividend payments of $44.0 million. Financing activities for the six months ended June 30, 2024 included the issuance of $120.0 million of long-term debt at OTP, net repayments of short-term debt of $68.6 million and dividend payments of $39.1 million.
CAPITAL REQUIREMENTS
CAPITAL EXPENDITURES
Our capital expenditure plan includes investments in electric generation facilities, transmission and distribution lines and facilities, equipment used in the manufacturing process, and computer hardware and information systems. Our capital expenditure plan is subject to review and is revised in light of changes in demands for energy, technology, environmental laws, changes in legislation or regulation, regulatory approvals, business expansion opportunities, the costs of labor, materials and equipment, and our financial condition. Refer to Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations, of our Form 10-K for the year ended December 31, 2024 for our capital expenditure plans for the five year period from 2025 through 2029.
CONTRACTUAL OBLIGATIONS
Our contractual obligations primarily include principal and interest payments due under our outstanding debt obligations, commitments to acquire coal, energy and capacity commitments, payments to meet our postretirement benefit obligations, and payment obligations under land easements and leasing arrangements.
Our contractual obligations as of December 31, 2024 are included in Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations, of our Annual Report on Form 10-K for the year ended December 31, 2024. There were no material changes in our contractual obligations outside of the ordinary course of business during the six months ended June 30, 2025.
COMMON STOCK DIVIDENDS
We paid dividends to our shareholders totaling $44.0 million, or $1.05 per share, in the first six months of 2025. The determination of the amount of future cash dividends to be paid will depend on, among other things, our financial condition, our actual or expected level of earnings and cash flows from operations, the level of our capital expenditures and our future business prospects. As a result of certain statutory limitations or regulatory or financing agreements, the amount of dividends we are allowed to pay could be restricted. See Note 10 to our consolidated financial statements included in this Quarterly Report on Form 10-Q for additional information. The decision to declare dividends is reviewed quarterly by our Board of Directors.
CAPITAL RESOURCES
Financial flexibility is provided by operating cash flows, unused lines of credit and access to capital markets, and is aided by strong financial coverages and investment grade credit ratings. Debt financing will be required in the next five years to refinance maturing debt and to finance our capital investments. Our financing plans are subject to change and are impacted by our planned level of capital investments and decisions to reduce borrowings under our lines of credit, to refund or retire early any of our outstanding debt, to complete acquisitions or to use capital for other corporate purposes.
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REGISTRATION STATEMENTS
On May 3, 2024, we filed two registration statements with the SEC, replacing two previously filed registration statements upon their expiration. The first statement, a shelf registration, allows us to offer for sale from time to time, either separately or together in any combination, equity, debt or other securities described in the registration statement. No new debt or equity has been issued pursuant to the registration statement. The second registration statement allows for the issuance of up to 1,500,000 common shares under our Automatic Dividend Reinvestment and Share Purchase Plan, which provides our common shareholders, retail customers of OTP and other interested investors a method of purchasing our common shares by reinvesting their dividends and/or making optional cash investments. Shares purchased under the plan may be newly issued common shares or common shares purchased on the open market. As of June 30, 2025, there were 1,379,019 shares available for purchase or issuance under the plan. Both registration statements expire in May 2027.
SHORT-TERM DEBT
OTC and OTP are each party to a credit agreement (the OTC Credit Agreement and the OTP Credit Agreement, respectively) which each provides for unsecured revolving lines of credit. The following is a summary of key provisions and borrowing information as of and for the six months ended, June 30, 2025:
(in thousands, except interest rates)OTC Credit AgreementOTP Credit Agreement
Borrowing Limit$170,000 $220,000 
Borrowing Limit if Accordion Exercised1
290,000 300,000 
Amount Restricted Due to Outstanding Letters of Credit as of June 30, 2025
— 9,022 
Amount Outstanding as of June 30, 2025
— — 
Average Amount Outstanding During the Six Months Ended June 30, 2025
— 59,015 
Maximum Amount Outstanding During the Six Months Ended June 30, 2025
$— $111,820 
Interest Rate as of June 30, 2025
5.82 %5.45 %
Maturity DateDecember 11, 2029December 11, 2029
1Each facility includes an accordion featuring allowing the borrower to increase the borrowing limit if certain terms and conditions are met.
LONG-TERM DEBT
On March 27, 2025, OTP entered into a Note Purchase Agreement pursuant to which OTP issued, in a private placement transaction, $100.0 million of senior unsecured notes consisting of (a) $50.0 million of 5.49% Series 2025A Senior Unsecured Notes due March 27, 2035, and (b) $50.0 million of 5.98% Series 2025B Senior Unsecured Notes due June 5, 2055. The Series 2025A Notes were issued on March 27, 2025, upon entering into the agreement. The Series 2025B Notes were issued on June 5, 2025. We do not anticipate or plan to issue any additional long-term debt in 2025.
As of June 30, 2025, we had $1.0 billion of principal outstanding under long-term debt arrangements. These instruments generally provide for unsecured borrowings at fixed rates of interest with maturities ranging from 2026 to 2055. Note 6 to our consolidated financial statements included in this Quarterly Report on Form 10-Q includes additional information regarding these long-term debt instruments.
Financial Covenants
Certain of our short- and long-term debt agreements require OTC and OTP to maintain certain financial covenants. As of June 30, 2025, we were in compliance with these financial covenants as further described below:
OTC, under its financial covenants, may not permit its ratio of interest-bearing debt to total capitalization to exceed 0.60 to 1.00 or 0.65 to 1.00, depending on the debt agreement, may not permit its interest and dividend coverage ratio to be less than 1.50 to 1.00 and may not permit its priority indebtedness to exceed 10 percent of its total capitalization. As of June 30, 2025, OTC's interest-bearing debt to total capitalization was 0.37 to 1.00, OTC's interest and dividend coverage ratio was 8.7 to 1.00 and OTC had no priority indebtedness outstanding.
OTP, under its financial covenants, may not permit its ratio of interest-bearing debt to total capitalization to exceed 0.60 to 1.00 or 0.65 to 1.00, depending on the debt agreement, may not permit its interest and dividend coverage ratio to be less than 1.50 to 1.00 and may not permit its priority indebtedness to exceed 20 percent of its total capitalization. As of June 30, 2025, OTP's interest-bearing debt to total capitalization was 0.45 to 1.00, OTP's interest and dividend coverage ratio was 3.03 to 1.00 and OTP had no priority indebtedness outstanding.
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CRITICAL ACCOUNTING POLICIES INVOLVING SIGNIFICANT ESTIMATES
The discussion and analysis of our results of operations are based on financial statements prepared in accordance with generally accepted accounting principles in the United States of America. Certain of our accounting policies require management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosures of contingent assets and liabilities in the preparation of our consolidated financial statements. We have disclosed in our Annual Report on Form 10-K for the year ended December 31, 2024 the critical accounting policies that affect our most significant estimates and assumptions used in preparing our consolidated financial statements. There have been no material changes to our critical accounting policies and estimates from those disclosed in the most recent Annual Report on Form 10-K.
ITEM 3.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
There have been no material changes in our market risk from those disclosed in Item 7A, Quantitative and Qualitative Disclosures About Market Risk, in our Annual Report on Form 10-K for the year ended December 31, 2024.
ITEM 4.CONTROLS AND PROCEDURES
Evaluation of Disclosure Controls and Procedures. Under the supervision and with the participation of the Company’s management, including the Chief Executive Officer and the Chief Financial Officer, the Company evaluated the effectiveness of the design and operation of its disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934 (the Exchange Act)) as of June 30, 2025, the end of the period covered by this report. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the Company's disclosure controls and procedures were effective as of June 30, 2025.
Changes in Internal Control over Financial Reporting. There were no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) under the Exchange Act) during the quarter ended June 30, 2025 that have materially affected, or are reasonably likely to materially affect, the Company's internal control over financial reporting.
PART II. OTHER INFORMATION
ITEM 1.LEGAL PROCEEDINGS
Several class action complaints have been filed against OTC and certain other parties. The complaints allege, among other things, that the defendants and alleged co-conspirators conspired to fix, raise, maintain, and stabilize the price of PVC municipal water and electrical conduit pipe in violation of United States antitrust laws. See Note 9, Commitments and Contingencies, to the consolidated financial statements, which is incorporated herein by reference, for further discussion of this matter.
ITEM 1A.RISK FACTORS
There have been no material changes from the risk factors disclosed in Item 1A, Risk Factors, of our Annual Report on Form 10-K for the year ended December 31, 2024.
ITEM 5.OTHER INFORMATION
None.
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ITEM 6.EXHIBITS
The following Exhibits are filed as part of, or incorporated by reference into, this report.
 No.Description
31.1
Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2
Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1
Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2
Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.SCH
Inline XBRL Taxonomy Extension Schema Document
101.CAL
Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB
Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE
Inline XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF
Inline XBRL Taxonomy Extension Definition Linkbase Document
104
Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

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SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
 OTTER TAIL CORPORATION
By:/s/ Todd R. Wahlund
  Todd R. Wahlund
Vice President and Chief Financial Officer
(duly authorized officer and principal financial officer)
 Dated: August 6, 2025
39
Otter Tail Corp

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