IREN May 2025 Monthly Update

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Insights

IREN posts record May results with $47.8M Bitcoin mining profit and expanding AI services while on track for 50 EH/s capacity.

IREN has delivered exceptional performance in May 2025, achieving record monthly revenue and hardware profit with daily hardware profits reaching $1.6 million. The company's operational metrics show impressive growth trajectories across both core business segments.

In Bitcoin mining, IREN increased its average operating hashrate to 38.4 EH/s, up from 36.6 EH/s in April and 30.3 EH/s in March, representing a 26.7% three-month improvement. This expansion enabled the company to mine 627 BTC in May, generating $64.7 million in mining revenue with a robust hardware profit margin of 74%.

What's particularly notable is IREN's ability to maintain strong profitability despite rising electricity costs. While electricity expenses increased to $27,033 per Bitcoin (from $20,460 in March), the company more than offset this with higher Bitcoin prices, which averaged $103,345 per coin in May versus $85,012 in March.

IREN's diversification into AI infrastructure is gaining meaningful traction. The AI Cloud Services segment generated $2.2 million in May revenue with an exceptional 98% hardware profit margin. At an annualized run rate of $28 million, this emerging business line now represents a material growth vector.

Infrastructure development continues on schedule, with the company on track to reach 50 EH/s mining capacity by June 30. The Horizon 1 AI Data Center remains on schedule for Q4 2025 delivery, with fabrication plans advancing and subcontractors mobilized. This disciplined execution across multiple complex infrastructure projects demonstrates IREN's operational capabilities.

The company's power infrastructure strategy appears well-conceived, with Childress Phase 5 nearing energization and transformer installation completed. This strategic approach to securing power capacity provides IREN with a competitive advantage in both mining and AI computing services where electricity availability and cost are critical success factors.

Overall, IREN is effectively executing its hybrid strategy across Bitcoin mining and AI computing infrastructure, delivering strong current financial results while methodically building capacity for future growth in both sectors.

06/05/2025 - 08:04 AM

SYDNEY, June 05, 2025 (GLOBE NEWSWIRE) -- IREN Limited (NASDAQ: IREN) (together with its subsidiaries, “IREN” or “the Company”), today published its monthly update for May 2025.

May Highlights

Record monthly revenue and hardware profit
$1.6m daily hardware profit in May
On track for 50 EH/s by June 30
AI Cloud Services revenue continuing to scale
Horizon 1 AI Data Center on track for Q4 ’25 delivery
Customer and financing workstreams progressing
Transitioning to US domestic issuer status from July 1

Cover

Key Metrics	May 25	Apr 25	Mar 25

Bitcoin Mining
Average operating hashrate	38.4 EH/s	36.6 EH/s	30.3 EH/s
Bitcoin mined³	627 BTC	579 BTC	533 BTC
Revenue (per Bitcoin)	$103,345	$86,522	$85,012
Electricity cost (per Bitcoin)¹	($27,033)	($24,381)	($20,460)
Revenue	$64.7m	$50.1m	$45.3m
Electricity costs¹	($16.9m)	($14.1m)	($10.9m)
Hardware profit²	$47.8m	$36.0m	$34.4m
Hardware profit margin⁴	74%	72%	76%

AI Cloud Services
Revenue	$2.2m	$2.0m	$1.6m
Electricity costs¹	($0.03m)	($0.04m)	($0.05m)
Hardware profit²	$2.1m	$2.0m	$1.5m
Hardware profit margin⁴	98%	98%	97%

Management Commentary

“Following record quarterly earnings reported earlier this month, we’re pleased to have delivered record revenue and hardware profit in May, underscoring the strength of our platform,” said Daniel Roberts, Co-Founder and Co-CEO.

“At the same time, we’re making strong progress across our AI verticals. At Childress, we’re executing on our Horizon 1 AI Data Center at pace. Subcontractors have been mobilized for the installation of the packaged chiller plant and our mechanical and piping contractors are fully onboarded with fabrication plans advancing. The project remains on track for delivery in Q4 2025, and we have confidence in contracting the capacity given ongoing customer engagement.”

Technical Commentary

Bitcoin Mining

Record monthly revenues – driven by higher Bitcoin prices and increase in average operating hashrate, with record number of Bitcoin mined during the month
Maintaining strong and resilient margins – higher electricity costs during the month offset by higher bitcoin prices (>70% monthly hardware profit margin YTD)
41 EH/s installed, on track for 50 EH/s by June 30 – remaining miners in the process of shipping from Southeast Asia (50 EH/s generates $977m annualized mining revenue at current mining economics⁵)

AI Cloud Services

Revenues continuing to scale – fueled by ramp-up of existing agreements and newly secured contracts
GPU fleet near full utilization – supporting training and inference workloads, including through white-labelled compute with leading US AI cloud providers (generating annualized run-rate revenue of $28 million⁶)

AI Data Centers

Customer workstreams progressing – continued engagement across Horizon 1 and Sweetwater
Procurement ongoing – continuing to secure long-lead equipment to enable rapid expansion of liquid cooled capacity at Childress beyond the initial 50MW Horizon 1 deployment

Annualized Illustrative Adj. EBITDA Sensitivities at 50 EH/s⁷

^{THE ABOVE INFORMATION IS FOR GENERAL INFORMATION AND ILLUSTRATIVE PURPOSES ONLY. THE ILLUSTRATIVE ADJUSTED EBITDA OUTPUTS ARE FOR ILLUSTRATIVE PURPOSES ONLY AND SHOULD NOT BE CONSIDERED PROJECTIONS OF IREN’S OPERATING PERFORMANCE. SUCH OUTPUTS ARE BASED ON IMPORTANT ASSUMPTIONS AND HISTORICAL INFORMATION, INCLUDING INFORMATION AND CALCULATIONS FROM THIRD PARTY SOURCES (INCLUDING WEBSITES). WE HAVE NOT INDEPENDENTLY VERIFIED SUCH INFORMATION AND CALCULATIONS, AND SUCH INFORMATION AND CALCULATIONS ARE SUBJECT TO IMPORTANT LIMITATIONS AND COULD PROVE TO BE INACCURATE. THE ILLUSTRATIVE OUTPUTS ARE BASED ON HISTORICAL OR THIRD-PARTY INFORMATION WHICH MAY OR MAY NOT MATERIALIZE IN THE FUTURE (INCLUDING THE ABILITY TO CONTRACT CUSTOMERS AT SUCH PRICING, OR AT ALL) – ACCORDINGLY, THERE IS NO ASSURANCE THAT ANY ILLUSTRATIVE OUTPUTS WILL BE ACHIEVED WITHIN THE TIMEFRAMES PRESENTED OR AT ALL OR THAT HARDWARE WILL OPERATE AT 100% UPTIME. THE ILLUSTRATIVE OUTPUTS ASSUME HARDWARE IS FULLY INSTALLED AND OPERATING TODAY USING THE ABOVE ASSUMPTIONS. THESE ASSUMPTIONS ARE LIKELY TO BE DIFFERENT IN THE FUTURE AND USERS SHOULD INPUT THEIR OWN ASSUMPTIONS. THE ABOVE AND THIS PRESENTATION SHOULD BE READ STRICTLY IN CONJUNCTION WITH THE FORWARD-LOOKING STATEMENTS DISCLAIMER ON PAGE 7.}

Project Update

Childress (750MW)

Phase 5 (150MW) energization in coming weeks, with substation transformer now installed
Horizon 1 on track for Q4 2025 delivery, with long lead equipment continuing to arrive in line with initial expectations
Second 345kV/138kV transformer now on site, supporting energization of full 750MW and providing redundancy

Sweetwater 1 (1.4GW)

General site-works continuing and substation civil works commenced
Energization April 2026

Sweetwater 2 (600MW)

Design work complete for a direct fiber loop connecting Sweetwater 1 & 2 to create 2GW Sweetwater data center hub
Energization late 2027

CHD 5&4
Childress Phases 5 & 4 (May 2025)

Childress 345kV/138kV transformer delivery (May 2025)

Horizon 1 Rendering
Rendering of Horizon 1 at Childress (up to 50MW IT load)

Childress Project Status

Site Overview

Events

Q3 FY25 Results Webcast
Replay available here

Cerebral Valley AI Summit
London, June 25, 2025

Roth Investor Conference
London, June 25-26, 2025

RAISE Summit
Paris, July 8-9, 2025

KD Panel
Kent Draper, CCO, presenting at Macquarie Asia Conference (May 2025)

KD BTC
Kent Draper, CCO, presenting at Bitcoin Vegas (May 2025)

DS BTC
Denis Skrinnikoff, CTO, interview at Bitcoin Vegas (May 2025)

Assumptions and Notes

Electricity costs are presented on a net basis and calculated as IFRS electricity charges, demand response program revenue (included in other income) and demand response fees (included in other operating expenses). Figures are based on current internal estimates and exclude Renewable Energy Certificate (“REC”) purchases.
Hardware profit is calculated as revenue less electricity costs. Hardware profit is a non-IFRS financial measure and is provided in addition to, and not as a substitute for, measures of financial performance prepared in accordance with IFRS. Refer to the Forward-Looking Statements disclaimer.
Bitcoin and Bitcoin mined in this investor update are presented in accordance with our revenue recognition policy which is determined on a Bitcoin received basis (post deduction of mining pool fees).
Hardware profit margin for Bitcoin Mining and AI Cloud Services is calculated as revenue less electricity costs, divided by revenue (for each respective revenue stream) and excludes all other costs.
Illustrative Adj. EBITDA = illustrative mining revenue less assumed net electricity costs, overheads and REC costs, and does not include working capital movements. Source: CoinWarz Bitcoin Mining Calculator. Illustrative calculations and inputs assume hardware operates at 100% uptime, 909 EH/s global hashrate, $0.035/kWh electricity costs, 3.125 BTC block reward, 0.1 BTC transaction fees and 0.16% pool fees, 765MW (power consumption), $104m (overheads), $16m (REC costs), and $105k Bitcoin price. Illustrative Adj. EBITDA is for illustrative purposes only and should not be considered projections of IREN’s operating performance. Inputs are based on assumptions, including historical information, which are likely to be different in the future and users should input their own assumptions. There is no assurance that any illustrative outputs will be achieved within the timeframes presented or at all, or that mining hardware will operate at 100% uptime. The above should be read strictly in conjunction with the forward-looking statements disclaimer in this press release.
AI Cloud Services annualized run-rate revenue for utilized GPUs as of May 31, 2025.
Illustrative Adj. EBITDA sensitivities reflect assumptions for Illustrative Adj. EBITDA calculations in the footnotes 5 above, across different Bitcoin price and network hashrate scenarios. $28m AI Cloud Services contribution reflects annualized runrate revenue for utilized GPUs as of May 31, 2025.

Contacts

Media Megan Boles Aircover Communications +1 562 537 7131 megan.boles@aircoverpr.com Jon Snowball Sodali & Co +61 477 946 068 +61 423 136 761	Investors Mike Power IREN mike.power@iren.com

To keep updated on IREN’s news releases and SEC filings, please subscribe to email alerts at
https://iren.com/investor/ir-resources/email-alerts.

Forward-Looking Statements

This press release includes “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements generally relate to future events or IREN’s future financial or operating performance. For example, forward-looking statements include but are not limited to the Company’s business strategy, expected operational and financial results, and expected increase in power capacity and hashrate. In some cases, you can identify forward-looking statements by terminology such as “anticipate,” “believe,” “may,” “can,” “should,” “could,” “might,” “plan,” “possible,” “project,” “strive,” “budget,” “forecast,” “expect,” “intend,” “target”, “will,” “estimate,” “predict,” “potential,” “continue,” “scheduled” or the negatives of these terms or variations of them or similar terminology, but the absence of these words does not mean that statement is not forward-looking. Such forward-looking statements are subject to risks, uncertainties, and other factors which could cause actual results to differ materially from those expressed or implied by such forward-looking statements. In addition, any statements or information that refer to expectations, beliefs, plans, projections, objectives, performance or other characterizations of future events or circumstances, including any underlying assumptions, are forward-looking.

These forward-looking statements are based on management’s current expectations and beliefs. These statements are neither promises nor guarantees, but involve known and unknown risks, uncertainties and other important factors that may cause IREN’s actual results, performance or achievements to be materially different from any future results performance or achievements expressed or implied by the forward looking statements, including, but not limited to: Bitcoin price and foreign currency exchange rate fluctuations; IREN’s ability to obtain additional capital on commercially reasonable terms and in a timely manner to meet its capital needs and facilitate its expansion plans; the terms of any future financing or any refinancing, restructuring or modification to the terms of any future financing, which could require IREN to comply with onerous covenants or restrictions, and its ability to service its debt obligations, any of which could restrict its business operations and adversely impact its financial condition, cash flows and results of operations; IREN’s ability to successfully execute on its growth strategies and operating plans, including its ability to continue to develop its existing data center sites, design and deploy direct-to-chip liquid cooling systems, and diversify and expand into the market for high performance computing (“HPC”) solutions (including the market for cloud services (“AI Cloud Services”) and potential colocation services; IREN’s limited experience with respect to new markets it has entered or may seek to enter, including the market for HPC solutions (including AI Cloud Services and potential colocation services); expectations with respect to the ongoing profitability, viability, operability, security, popularity and public perceptions of the Bitcoin network; expectations with respect to the profitability, viability, operability, security, popularity and public perceptions of any current and future HPC solutions (including AI Cloud Services and potential colocation services) that IREN offers; IREN’s ability to secure and retain customers on commercially reasonable terms or at all, particularly as it relates to its strategy to expand into markets for HPC solutions (including AI Cloud Services and potential colocation services); IREN’s ability to manage counterparty risk (including credit risk) associated with any current or future customers, including customers of its HPC solutions (including AI Cloud Services and potential colocation services) and other counterparties; the risk that any current or future customers, including customers of its HPC solutions (including AI Cloud Services and potential colocation services), or other counterparties may terminate, default on or underperform their contractual obligations; Bitcoin global hashrate fluctuations; IREN’s ability to secure renewable energy, renewable energy certificates, power capacity, facilities and sites on commercially reasonable terms or at all; delays associated with, or failure to obtain or complete, permitting approvals, grid connections and other development activities customary for greenfield or brownfield infrastructure projects; IREN’s reliance on power and utilities providers, third party mining pools, exchanges, banks, insurance providers and its ability to maintain relationships with such parties; expectations regarding availability and pricing of electricity; IREN’s participation and ability to successfully participate in demand response products and services and other load management programs run, operated or offered by electricity network operators, regulators or electricity market operators; the availability, reliability and/or cost of electricity supply, hardware and electrical and data center infrastructure, including with respect to any electricity outages and any laws and regulations that may restrict the electricity supply available to IREN; any variance between the actual operating performance of IREN’s miner hardware achieved compared to the nameplate performance including hashrate; IREN’s ability to curtail its electricity consumption and/or monetize electricity depending on market conditions, including changes in Bitcoin mining economics and prevailing electricity prices; actions undertaken by electricity network and market operators, regulators, governments or communities in the regions in which IREN operates; the availability, suitability, reliability and cost of internet connections at IREN’s facilities; IREN’s ability to secure additional hardware, including hardware for Bitcoin mining and any current or future HPC solutions (including AI Cloud Services and potential colocation services) it offers, on commercially reasonable terms or at all, and any delays or reductions in the supply of such hardware or increases in the cost of procuring such hardware; expectations with respect to the useful life and obsolescence of hardware (including hardware for Bitcoin mining and any current or future HPC solutions (including AI Cloud Services and potential colocation services) IREN offers); delays, increases in costs or reductions in the supply of equipment used in IREN’s operations including as a result of tariffs and duties, and certain equipment being in high demand due to global supply chain constraints; changing political and geopolitical conditions, including changing international trade policies and the implementation of wide-ranging, reciprocal and retaliatory tariffs and trade restrictions; IREN’s ability to operate in an evolving regulatory environment; IREN’s ability to successfully operate and maintain its property and infrastructure; reliability and performance of IREN’s infrastructure compared to expectations; malicious attacks on IREN’s property, infrastructure or IT systems; IREN’s ability to maintain in good standing the operating and other permits and licenses required for its operations and business; IREN’s ability to obtain, maintain, protect and enforce its intellectual property rights and confidential information; any intellectual property infringement and product liability claims; whether the secular trends IREN expects to drive growth in its business materialize to the degree it expects them to, or at all; any pending or future acquisitions, dispositions, joint ventures or other strategic transactions; the occurrence of any environmental, health and safety incidents at IREN’s sites, and any material costs relating to environmental, health and safety requirements or liabilities; damage to IREN’s property and infrastructure and the risk that any insurance IREN maintains may not fully cover all potential exposures; ongoing proceedings relating to the default by two of the Company’s wholly-owned special purpose vehicles under limited recourse equipment financing facilities; ongoing securities litigation relating in part to the default, and any future litigation, claims and/or regulatory investigations, and the costs, expenses, use of resources, diversion of management time and efforts, liability and damages that may result therefrom; IREN’s failure to comply with any laws including the anti-corruption laws of the United States and various international jurisdictions; any failure of IREN's compliance and risk management methods; any laws, regulations and ethical standards that may relate to IREN’s business, including those that relate to Bitcoin and the Bitcoin mining industry and those that relate to any other services it offers, including laws and regulations related to data privacy, cybersecurity and the storage, use or processing of information and consumer laws; IREN’s ability to attract, motivate and retain senior management and qualified employees; increased risks to IREN’s global operations including, but not limited to, political instability, acts of terrorism, theft and vandalism, cyberattacks and other cybersecurity incidents and unexpected regulatory and economic sanctions changes, among other things; climate change, severe weather conditions and natural and man-made disasters that may materially adversely affect IREN’s business, financial condition and results of operations; public health crises, including an outbreak of an infectious disease and any governmental or industry measures taken in response; IREN’s ability to remain competitive in dynamic and rapidly evolving industries; damage to IREN’s brand and reputation; our ability to remediate our existing material weakness and to establish and maintain an effective system of internal controls; expectations relating to environmental, social or governance issues or reporting; the costs of being a public company; the increased regulatory and compliance costs of IREN ceasing to be a foreign private issuer and an emerging growth company, as a result of which we will be required, among other things, to file periodic reports and registration statements on U.S. domestic issuer forms with the SEC commencing with our next fiscal year, and we will also be required to prepare our financial statements in accordance with U.S. GAAP rather than IFRS, and to modify certain of our policies to comply with corporate governance practices required of a U.S. domestic issuer; that we do not currently pay any cash dividends on our ordinary shares, and may not in the foreseeable future and, accordingly, your ability to achieve return on your investment in our ordinary shares will depend on appreciation, if any, in the price of our ordinary shares; and other important factors discussed under the caption “Risk Factors” in IREN’s annual report on Form 20-F filed with the SEC on August 28, 2024 as such factors may be updated from time to time in its other filings with the SEC, accessible on the SEC’s website at www.sec.gov and the Investor Relations section of IREN’s website at https://investors.iren.com.

These and other important factors could cause actual results to differ materially from those indicated by the forward-looking statements made in this investor update. Any forward-looking statement that IREN makes in this investor update speaks only as of the date of such statement. Except as required by law, IREN disclaims any obligation to update or revise, or to publicly announce any update or revision to, any of the forward-looking statements, whether as a result of new information, future events or otherwise.

Preliminary Financial Information

The financial information presented in this investor update is not subject to the same closing procedures as our unaudited quarterly financial results and our audited annual financial results, and has not been reviewed or audited by our independent registered public accounting firm. The preliminary financial information included in this investor update does not represent a comprehensive statement of our financial results or financial position and should not be viewed as a substitute for unaudited financial statements prepared in accordance with International Financial Reporting Standards. Accordingly, you should not place undue reliance on the preliminary financial information included in this investor update.

Non-IFRS Financial Measures

This investor update includes non-IFRS financial measures, including electricity costs (presented on a net basis), hardware profit and illustrative adjusted EBITDA. We provide these measures in addition to, and not as a substitute for, measures of financial performance prepared in accordance with IFRS. There are a number of limitations related to the use of non-IFRS financial measures. For example, other companies, including companies in our industry, may calculate these measures differently. The Company believes that these measures are important and supplement discussions and analysis of its results of operations and enhances an understanding of its operating performance.

Electricity costs are calculated as our IFRS electricity charges, demand response program revenue (included in other income) and demand response fees (included in other operating expenses). Figures are based on current internal estimates and excludes the cost of RECs. Hardware Profit is calculated as revenue less electricity costs (excludes all other site, overhead and REC costs). Illustrative Adjusted EBITDA is calculated as illustrative mining revenue less assumed net electricity costs, overheads and REC costs, and does not include working capital movements.

FAQ

What was IREN's Bitcoin mining revenue and profit margin in May 2025?

IREN's Bitcoin mining revenue was $64.7m with a hardware profit margin of 74% in May 2025.

How many Bitcoin did IREN mine in May 2025?

IREN mined 627 BTC in May 2025, a record monthly amount for the company.

What is IREN's current hashrate and target for June 2025?

IREN's average operating hashrate in May was 38.4 EH/s, and they are targeting 50 EH/s by June 30, 2025.

How is IREN's AI Cloud Services business performing?

IREN's AI Cloud Services generated $2.2m in revenue with a 98% profit margin in May 2025, showing continuous growth.

When is IREN's Horizon 1 AI Data Center expected to be completed?

IREN's Horizon 1 AI Data Center is on track for delivery in Q4 2025.

IREN May 2025 Monthly Update

Insights

FAQ

What was IREN's Bitcoin mining revenue and profit margin in May 2025?

How many Bitcoin did IREN mine in May 2025?

What is IREN's current hashrate and target for June 2025?

How is IREN's AI Cloud Services business performing?

When is IREN's Horizon 1 AI Data Center expected to be completed?

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IREN May 2025 Monthly Update

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Cryptocurrency & AI Infrastructure Analyst positive

FAQ

What was IREN's Bitcoin mining revenue and profit margin in May 2025?

How many Bitcoin did IREN mine in May 2025?

What is IREN's current hashrate and target for June 2025?

How is IREN's AI Cloud Services business performing?

When is IREN's Horizon 1 AI Data Center expected to be completed?

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