Partnership with WEKA to optimize generative AI workloads

Near-term expansion on track to 9.4 EH/s

SYDNEY, Australia, Nov. 07, 2023 (GLOBE NEWSWIRE) -- Iris Energy Limited (NASDAQ:IREN) ("Iris Energy" or "the Company"), a leading owner and operator of institutional-grade, highly efficient proprietary Bitcoin mining data centers powered by 100% renewable energy, today published a monthly investor update for October 2023, containing its results from operations as well as business updates.

Key Highlights¹

Key metrics²	Oct-23
Average operating hashrate (PH/s)	5,571
Bitcoin mined	376
Mining revenue (US$'000)	11,159
Electricity costs (US$'000)³	5,868
Revenue per Bitcoin (US$)	29,673
Electricity costs per Bitcoin (US$)	15,604

Partnership with WEKA to optimize generative AI workloads
- Provides innovative storage solutions for generative AI and performance-intensive workloads
- Enables optimized GPU-stack storage performance within Iris Energy's data centers
Near-term expansion on track to 9.4 EH/s
- Acquired 1.4 EH/s of latest-generation Bitmain S21 miners
  - Total consideration of $14/TH⁴ (~$2/TH deferred until one year after shipment)
  - Leading 17.5 J/TH efficiency to improve resilience post-halving
  - Funded from existing capital sources, including cash at bank of ~$64 million⁵
- Childress (Phase 1) construction remains on track, providing near-term expansion to 9.4 EH/s⁶
Childress construction (Phase 1, first 100MW)
- DC 1: operating since April 2023
- DC 2: racking and electrical installation commenced
- DC 3: structure and internal framing commenced
- DC 4: concrete foundations commenced
- DC 5: earthworks complete

Corporate update

Partnership with WEKA to optimize generative AI workloads

On October 24, 2023, the Company announced it is partnering with WEKA, the data platform software provider for performance-intensive workloads, as part of its entry into the generative AI market.

As part of the partnership, Iris Energy will utilize the WEKA® Data Platform to provide storage and data management solutions for generative AI and performance-intensive workloads.

Expected to provide a high-performance solution for GPU optimization within the Company's data centers that is simple, scalable, sustainable and secure.

The update can be accessed via the following link.

Near-term expansion on track to 9.4 EH/s

On October 6, 2023, the Company announced the acquisition of 1.4 EH/s of latest-generation Bitmain S21 miners as part of its near-term expansion to 9.4 EH/s⁶.

The key highlights are:

Increasing self-mining capacity by 25% from 5.6 EH/s to 7.0 EH/s
Total consideration of $19.6 million ($14/TH)⁴ – of which $2.9 million (~$2/TH) is deferred until one year after shipment
Leading 17.5 J/TH efficiency to improve resilience post-halving
Childress (Phase 1) construction remains on track, providing near-term expansion to 9.4 EH/s⁶

The purchase is expected to be funded from existing capital sources, including cash in bank (~$64 million, no debt)⁵, operating cash flow and other recently disclosed funding programs (as applicable).

The update can be accessed via the following link.

Analyst site visit (Childress, Texas)

The Company hosted 7 coverage banks on an analyst site visit to Childress, Texas.

The site tour showcased the:

Construction progress for Phase 1 (first 100MW)
Company's technological and operational excellence which is driving leading uptime and energy trading capabilities
Company's commitment and contribution to the local community

Canal Flats update (0.8 EH/s, 30MW capacity) – BC, Canada

Canal Flats has been powered by 100% renewable energy since inception⁷.

The project achieved average monthly operating hashrate of 841 PH/s in October compared to 835 PH/s last month.

Mackenzie update (2.6 EH/s, 80MW capacity) – BC, Canada

Mackenzie has been powered by 100% renewable energy since inception⁷.

The project achieved average monthly operating hashrate of 2,581 PH/s in October compared to 2,607 PH/s last month.

Prince George update (1.6 EH/s, 50MW capacity) – BC, Canada

Prince George has been powered by 100% renewable energy since inception⁷.

The project achieved average monthly operating hashrate of 1,610 PH/s in October compared to 1,617 PH/s last month.

Childress update (0.6 EH/s, 20MW operating / 80MW under construction) – Texas, USA

Childress has been powered by 100% renewable energy since inception via the purchase of RECs.

The project achieved average monthly operating hashrate of 539 PH/s in October compared to 495 PH/s last month.

Construction for the remainder of Phase 1 (100MW) remains on track with:

DC 1: operating since April 2023
DC 2: structure and internal framing complete; racking and electrical installation commenced
DC 3: structure and internal framing commenced
DC 4: concrete foundations commenced
DC 5: earthworks complete

The Company's ownership of key infrastructure and significant land holdings provides a rapid and efficient growth pathway, with 600MW of total power capacity immediately available at the site.

Community engagement

Iris Energy was pleased to host the inaugural Community Grants Recipient Event in Prince George, BC. During the event over C$59,000 was presented to 10 local non-profit organizations, including Lheidli T'enneh Nation (community), Prince George CRC Community Gardens, Spinal Cord Injury BC, and Northern Adapted Sports Association.

The Company donated to the Mackenzie Chamber of Commerce's BC Ambulance Service Hallowe'en Event which supported paramedics handing out treats to children in Mackenzie.

Future development sites

Development works continued across additional sites in Canada, the USA and Asia-Pacific, which have the potential to support up to an additional >1GW of aggregate capacity that can power growth beyond the Company's 760MW of announced capacity.

Operating and financial results

Daily average operating hashrate chart is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/e3081d69-8dc0-446a-8465-b6c63548ef2d

Technical commentary

The Company recorded higher revenue ($11.2m vs. $10.3m in September) and average operating hashrate (5,571 PH/s vs. 5,554 PH/s in September). The decrease in Bitcoin mined (376 vs. 390 in September) was primarily attributable to an increase in network difficulty. The increase in electricity costs per Bitcoin ($15.6k vs. $13.7k in September) was attributable to lower energy trading proceeds at Childress as well as an increase in network difficulty compared to September, noting the Company retains flexibility to reduce future power costs through adjusting miner output in response to changes in mining economics.

Operating	Aug-23	Sep-23	Oct-23
Renewable energy usage (MW)⁷^,⁸	168	168	166
Avg operating hashrate (PH/s)	5,493	5,554	5,571

Financial (unaudited)²	Aug-23	Sep-23	Oct-23
Bitcoin mined	410	390	376
Mining revenue (US$'000)	11,459	10,278	11,159
Electricity costs (US$'000)³	4,342	5,354	5,868
Revenue per Bitcoin (US$)	27,937	26,331	29,673
Electricity costs per Bitcoin (US$)	10,586	13,717	15,604

Site	Capacity (MW)	Capacity (EH/s)⁹	Timing	Status
Canal Flats (BC, Canada)	30	0.8	Complete	Operating
Mackenzie (BC, Canada)	80	2.6	Complete	Operating
Prince George (BC, Canada)	50	1.6	Complete	Operating
Total (BC, Canada)	160	5.0
Childress (Texas, USA)	20	0.6	Complete	Operating
Total Operating (Canada & USA)	180	5.6
Childress (Texas, USA)	80	3.8⁶	Early 2024¹⁰	Under construction
Total (Canada & USA)	260	9.4

About Iris Energy

Iris Energy is a sustainable Bitcoin mining company that supports the decarbonization of energy markets and the global Bitcoin network.

100% renewables: Iris Energy targets sites with low-cost, under-utilized renewable energy, and supports local communities
Long-term security over infrastructure, land and power supply: Iris Energy builds, owns and operates its electrical infrastructure and proprietary data centers, providing long-term security and operational control over its assets
Seasoned management team: Iris Energy's team has an impressive track record of success across energy, infrastructure, renewables, finance, digital assets and data centers with cumulative experience in delivering >$25bn in energy and infrastructure projects globally

Forward-Looking Statements

This investor update 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 Iris Energy'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 Iris Energy'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; Iris Energy's ability to obtain additional capital on commercially reasonable terms and in a timely manner to meet our 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 Iris Energy to comply with onerous covenants or restrictions, and its ability to service its debt obligations; Iris Energy's ability to successfully execute on its growth strategies and operating plans, including its ability to continue to develop its existing data center sites and to increase its diversification into the market for potential HPC solutions; Iris Energy's limited experience with respect to new markets it has entered or may seek to enter, including the market for HPC solutions; 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 potential HPC solutions that Iris Energy may offer in the future; Iris Energy's ability to secure customers on commercially reasonable terms or at all, particularly as it relates to its potential expansion into HPC solutions; Iris Energy's ability to manage counterparty risk (including credit risk) associated with potential customers and other counterparties; Iris Energy's ability to secure renewable energy and renewable energy certificates, power capacity, facilities and sites on commercially reasonable terms or at all; the risk that counterparties may terminate, default on or underperform their contractual obligations; Bitcoin network hashrate fluctuations; delays associated with, or failure to obtain or complete, permitting approvals, grid connections and other development activities customary for greenfield or brownfield infrastructure projects; our reliance on third party mining pools, exchanges, banks, insurance providers and our ability to maintain relationships with such parties; expectations regarding availability and pricing of electricity; Iris Energy'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 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 Iris Energy; any variance between the actual operating performance of Iris Energy's hardware achieved compared to the nameplate performance including hashrate; Iris Energy'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 Iris Energy operates; the availability, suitability, reliability and cost of internet connections at Iris Energy's facilities; Iris Energy's ability to secure additional hardware, including hardware for Bitcoin mining and potential HPC solutions it may offer, 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 as well as hardware for other applications, including HPC solutions); delays, increases in costs or reductions in the supply of equipment used in Iris Energy's operations; Iris Energy's ability to operate in an evolving regulatory environment; Iris Energy's ability to successfully operate and maintain its property and infrastructure; reliability and performance of Iris Energy's infrastructure compared to expectations; malicious attacks on Iris Energy's property, infrastructure or IT systems; Iris Energy's ability to maintain in good standing the operating and other permits and licenses required for its operations and business; Iris Energy ability to obtain, maintain, protect and enforce its intellectual property rights and other confidential information; whether the secular trends Iris Energy expects to drive growth in its business materialize to the degree it expects them to, or at all; the occurrence of any environmental, health and safety incidents at Iris Energy's sites; any material costs relating to environmental, health and safety requirements or liabilities; damage to our property and infrastructure and the risk that any insurance Iris Energy maintains may not fully cover all potential exposures; ongoing securities litigation and proceedings relating to the default by two of Iris Energy'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; any laws, regulations and ethical standards that may relate to Iris Energy's business, including those that relate to Bitcoin and the Bitcoin mining industry and those that relate to any other solutions we may offer (such as potential HPC solutions), including regulations related to data privacy, cybersecurity and the storage, use or processing of information; any intellectual property infringement and product liability claims; our ability to attract, motivate and retain senior management and qualified employees; increased risks to our 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 and natural and man-made disasters that may materially adversely affect our business, financial condition and results of operations; the ongoing effects of COVID-19 or any other outbreak of an infectious disease and any governmental or industry measures taken in response; our ability to remain competitive in dynamic and rapidly evolving industries; damage to our brand and reputation; and other important factors discussed under the caption "Risk Factors" in Iris Energy's annual report on Form 20-F filed with the SEC on September 13, 2023 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 Iris Energy's website at https://investors.irisenergy.co.

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 Iris Energy makes in this investor update speaks only as of the date of such statement. Except as required by law, Iris Energy 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 preliminary financial information for the month of October 2023 included in this investor update is not subject to the same closing procedures as our unaudited quarterly financial results and has not been reviewed 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.

Contacts

Media

Jon Snowball

Domestique

+61 477 946 068

Investors

Lincoln Tan

Iris Energy

+61 407 423 395

lincoln.tan@irisenergy.co

To keep updated on Iris Energy's news releases and SEC filings, please subscribe to email alerts at https://investors.irisenergy.co/ir-resources/email-alerts.

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1} All timing references in this investor update are to calendar months, in each case unless otherwise specified.

² 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 as applicable). Electricity costs exclude REC purchases.

³ The Company's Childress site generated ~US$203k of power sales in October (~7 Bitcoin equivalent), which represents unaudited power credits (primarily driven by voluntary curtailment) under hedge contracts (based on current meter data and ERCOT real-time prices) and are reflected within the electricity costs. Figures are based on current internal estimates and exclude REC purchases.

⁴ Purchase price excludes shipping and taxes and is net of Bitmain bonuses and coupon programs.

⁵ Reflects USD equivalent, unaudited preliminary cash, cash equivalents and term deposits as of September 30, 2023.

⁶ Assumes future purchase and installation of Bitmain S19 XP miners (beyond the announced 1.4 EH/s of Bitmain S21 miners). Additional miners have not yet been purchased and the Company will continue to monitor the market for funding and purchase opportunities. Hashrate figures may change depending on miner procurement selection. There can be no assurance that Iris Energy will be able to procure any additional miners at all, or on terms that are favorable to Iris Energy.

⁷ The Company's Canal Flats, Mackenzie and Prince George sites have been powered by 100% renewable energy since inception of which approximately 98% is directly from renewable energy sources; approximately 2% is from the purchase of RECs. The Company's Childress site has been powered by 100% renewable energy since inception via the purchase of RECs.

⁸ Comprises actual power usage for Canal Flats, Mackenzie, Prince George and Childress.

⁹ Reflects estimated hashrate capacity by site assuming full utilization of existing available data center capacity with Bitmain S19j Pro miners, except where otherwise stated.

¹⁰ Indicative timing for commencement of delivery of data centers.

Photos accompanying this announcement are available at

https://www.globenewswire.com/NewsRoom/AttachmentNg/9917fe1e-028f-4646-9726-603f26aee5c1

https://www.globenewswire.com/NewsRoom/AttachmentNg/53995517-06a7-417a-b670-abf15167665f

https://www.globenewswire.com/NewsRoom/AttachmentNg/05cc09dc-dfbe-4c26-ae31-83a5203860ba

https://www.globenewswire.com/NewsRoom/AttachmentNg/63dd3e1b-ce22-48d3-9d60-34b5b80af5da

Iris Energy Announces Monthly Investor Update for October 2023