PGE Energizes 475 MW of Battery Energy Storage to Boost Grid Reliability and Keep Costs Low for Oregonians
Portland General Electric (NYSE:POR) has completed three major battery energy storage systems totaling 475 megawatts (MW) and 1.9 gigawatt hours (GWh) of capacity in the Portland metro area. The facilities - Seaside (200 MW), Sundial (200 MW), and Constable (75 MW) - can power approximately 300,000 homes for four hours during peak demand.
Located at key substations in North Portland, Troutdale, and Hillsboro, these lithium-ion battery systems help balance power supply and demand while reducing reliance on expensive short-term electricity purchases. Together with the previously completed 17 MW Coffee Creek facility, PGE's total battery storage capacity now reaches 492 MW.
Portland General Electric (NYSE:POR) ha completato tre grandi impianti di accumulo di energia a batteria per un totale di 475 megawatt (MW) e 1,9 gigawattora (GWh) di capacità nell'area metropolitana di Portland. Le strutture - Seaside (200 MW), Sundial (200 MW) e Constable (75 MW) - possono alimentare circa 300.000 abitazioni per quattro ore durante i picchi di domanda.
Situati in sottostazioni strategiche a North Portland, Troutdale e Hillsboro, questi sistemi a batteria agli ioni di litio aiutano a bilanciare l'offerta e la domanda di energia riducendo la dipendenza da costosi acquisti di elettricità a breve termine. Insieme all'impianto Coffee Creek da 17 MW completato in precedenza, la capacità totale di accumulo a batteria di PGE raggiunge ora i 492 MW.
Portland General Electric (NYSE:POR) ha completado tres grandes sistemas de almacenamiento de energía con baterías que suman 475 megavatios (MW) y 1,9 gigavatios hora (GWh) de capacidad en el área metropolitana de Portland. Las instalaciones - Seaside (200 MW), Sundial (200 MW) y Constable (75 MW) - pueden abastecer aproximadamente a 300,000 hogares durante cuatro horas en los momentos de mayor demanda.
Ubicados en subestaciones clave en North Portland, Troutdale y Hillsboro, estos sistemas de baterías de iones de litio ayudan a equilibrar la oferta y la demanda de energía, reduciendo la dependencia de costosas compras de electricidad a corto plazo. Junto con la planta Coffee Creek de 17 MW previamente completada, la capacidad total de almacenamiento de baterías de PGE alcanza ahora los 492 MW.
Portland General Electric (NYSE:POR)는 포틀랜드 대도시 지역에 총 475메가와트(MW) 및 1.9기가와트시(GWh) 용량의 대형 배터리 에너지 저장 시스템 3개를 완공했습니다. 이 시설들 - Seaside(200 MW), Sundial(200 MW), Constable(75 MW) - 은 피크 수요 시간 동안 약 300,000가구에 4시간 동안 전력을 공급할 수 있습니다.
노스포틀랜드, 트라우트데일, 힐스보로의 주요 변전소에 위치한 이 리튬이온 배터리 시스템들은 전력 공급과 수요를 균형 있게 조절하며, 단기 고비용 전력 구매 의존도를 줄이는 데 기여합니다. 이전에 완공된 17 MW Coffee Creek 시설과 함께 PGE의 총 배터리 저장 용량은 이제 492 MW에 달합니다.
Portland General Electric (NYSE:POR) a achevé trois importants systèmes de stockage d'énergie par batterie totalisant 475 mégawatts (MW) et 1,9 gigawattheure (GWh) de capacité dans la région métropolitaine de Portland. Les installations - Seaside (200 MW), Sundial (200 MW) et Constable (75 MW) - peuvent alimenter environ 300 000 foyers pendant quatre heures lors des pics de demande.
Situés dans des postes clés à North Portland, Troutdale et Hillsboro, ces systèmes de batteries lithium-ion contribuent à équilibrer l'offre et la demande d'électricité tout en réduisant la dépendance aux achats d'électricité coûteux à court terme. Avec l'installation Coffee Creek de 17 MW achevée précédemment, la capacité totale de stockage par batterie de PGE atteint désormais 492 MW.
Portland General Electric (NYSE:POR) hat drei große Batteriespeichersysteme mit einer Gesamtkapazität von 475 Megawatt (MW) und 1,9 Gigawattstunden (GWh) im Großraum Portland fertiggestellt. Die Anlagen – Seaside (200 MW), Sundial (200 MW) und Constable (75 MW) – können während der Spitzenlast etwa 300.000 Haushalte für vier Stunden mit Strom versorgen.
Die Lithium-Ionen-Batteriesysteme befinden sich an wichtigen Umspannwerken in North Portland, Troutdale und Hillsboro und helfen dabei, das Verhältnis von Stromangebot und -nachfrage auszugleichen, während sie die Abhängigkeit von teuren kurzfristigen Stromkäufen verringern. Zusammen mit der zuvor fertiggestellten 17-MW-Anlage Coffee Creek erreicht die gesamte Batteriespeicherkapazität von PGE nun 492 MW.
- Addition of 475 MW of battery storage capacity serving 300,000 homes for 4 hours
- Strategic positioning at key substations improves existing infrastructure utilization
- Reduces reliance on expensive short-term electricity purchases
- Helps stabilize energy costs and limit price volatility for customers
- None.
Insights
PGE's 475MW battery storage deployment strengthens grid reliability, reduces costly spot purchases, and strategically positions the utility for renewable integration.
PGE's energization of 475 megawatts of battery energy storage represents a significant infrastructure milestone with multiple strategic advantages. The three new facilities add 1.9 gigawatt hours of dispatchable capacity, providing enough power for approximately 300,000 homes for four hours during peak demand periods.
The strategic placement of these lithium-ion systems at key substations in North Portland, Troutdale, and Hillsboro creates a distributed network of flexible capacity exactly where it's needed most - at critical load centers. This location-specific deployment maximizes the value of existing transmission infrastructure while avoiding costly grid upgrades.
From a financial perspective, these batteries deliver multiple value streams. They reduce PGE's exposure to volatile wholesale electricity markets by minimizing the need for expensive spot purchases during peak demand. This directly translates to more stable rates for customers and potentially more predictable earnings for the utility.
The procurement strategy demonstrates financial discipline, with a mix of ownership models: the 200 MW Seaside and 75 MW Constable facilities are utility-owned assets, while the 200 MW Sundial operates under a 20-year capacity agreement. This balanced approach optimizes capital deployment while securing long-term capacity.
With the addition of these projects plus the previously completed 17 MW Coffee Creek facility, PGE now commands 492 MW of battery capacity - positioning it as a leader in grid-scale storage among mid-sized utilities. This capacity provides crucial flexibility for integrating the increasing amounts of intermittent renewable generation, addressing one of the key challenges in the transition to cleaner energy sources.
Together, these three facilities can power roughly 300,000 homes for four hours during peak demand or when power is limited due to weather or unexpected interruptions. Additionally, they offer flexibility and backup capacity to ensure that PGE customers have access to electricity when they need it most.
"Batteries play an important role in helping PGE build a more flexible, reliable and diverse generation portfolio," said Darrington Outama, PGE Senior Director of Energy Supply. "In addition to providing power during peak hours every day, batteries enhance our ability to respond to sudden changes in the grid and help keep energy supply and demand balanced. For customers, that means more stable and reliable power, all at the lowest possible cost."
Strategically located at key substations in
Two of the newly operational facilities, successfully developed and awarded to Eolian, L.P. (Eolian) through Portland General Electric's 2021 All-Source Request for Proposals (RFP) process, include:
- Seaside: A 200 MW PGE-owned facility located in
North Portland and delivered to PGE by Eolian, L.P. (Eolian) under a fixed-cost Build-Transfer Agreement (BTA). The facility achieved commercial operation in July 2025. - Sundial: A 200 MW facility in
Troutdale , developed by Eolian and operated by NextEra Energy Resources under a 20-year storage capacity agreement with PGE. The facility achieved commercial operation in December 2024. - Constable: A 75 MW PGE-owned facility located in
Hillsboro and constructed for PGE under an engineering, procurement and construction agreement with Mortenson. The facility achieved commercial operation in December 2024.
"Battery energy storage systems sited at major substations radically improve the use of existing high voltage transmission lines, avoiding expensive or challenging new grid upgrades and providing a low-cost load growth solution through existing infrastructure," said Aaron Zubot, CEO of Eolian.
In addition to the three new large-scale battery facilities, PGE completed its 17 MW Coffee Creek Battery Storage system near
About Portland General Electric
Portland General Electric (NYSE: POR) is an integrated energy company that generates, transmits and distributes electricity to over 950,000 customers serving an area of 1.9 million Oregonians. Since 1889, Portland General Electric (PGE) has been powering social progress, delivering safe, affordable, reliable and increasingly clean electricity while working to transform energy systems to meet evolving customer needs. PGE customers have set the standard for prioritizing clean energy with the No. 1 voluntary renewable energy program in the country. PGE was ranked the No. 1 utility in the 2024 Forrester
About Eolian
Eolian operates a growing portfolio of battery energy storage projects and develops and invests in clean energy and co-located datacenter projects across the US. For over 20 years, Eolian's founding management has worked together to build the assets at the core of the company, creating unique and proprietary structures that have directly funded the development of nearly 30 GW of operating or under-construction energy storage, solar, and wind generating capacity across the country. Eolian is owned by its employees and funds that are managed by Global Infrastructure Partners (GIP), a BlackRock company and leading global infrastructure investor For more information, follow Eolian on LinkedIn or visit www.eolianenergy.com.
Contact:
PGE Communications Team
503-464-2067
pgecommunications@pgn.com
Source: Portland General Company
View original content to download multimedia:https://www.prnewswire.com/news-releases/pge-energizes-475-mw-of-battery-energy-storage-to-boost-grid-reliability-and-keep-costs-low-for-oregonians-302524303.html
SOURCE Portland General Company
FAQ
How much battery storage capacity did PGE (NYSE:POR) add in its latest expansion?
Where are PGE's new battery storage facilities located?
How many homes can PGE's new battery storage systems power?
What is PGE's total battery storage capacity after these additions?
How will these battery storage systems benefit PGE customers?
