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Energy Vault Advances ‘Own & Operate’ Growth Strategy in Australia with Award of New South Wales Long-Term Energy Service Agreement (LTESA) for 125 MW, 1.0 GWh Stoney Creek BESS

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LTESA award secures up to 14 years of project revenue support to complement the expected project merchant revenues

Previously announced 1 GWh and AUD $350 million (~USD $220 million) BESS energy storage system confirmed as 8-hour duration, making it one of the first and largest long duration BESS systems announced in New South Wales (NSW)

The Stoney Creek BESS, submitted via a joint Enervest-Energy Vault Consortium bid, will provide large-scale dispatchable energy storage to balance renewable generation, enhance grid stability, and support New South Wales decarbonization targets

As outlined in the May 2024 Investor and Analyst Day, the LTESA award demonstrates successful regional expansion of Energy Vault’s 'Own & Operate' growth strategy to Australia, complementing ~2.6 GWh of previously announced projects underway in the country

WESTLAKE VILLAGE, Calif. & MELBOURNE, Australia, March 05, 2025--(BUSINESS WIRE)--Energy Vault Holdings, Inc. (NYSE: NRGV) ("Energy Vault"), a leader in sustainable, grid-scale energy storage solutions, today announced that the Stoney Creek Battery Energy Storage System (BESS) has been awarded a 14 year Long-Term Energy Service Agreement (LTESA) by the Australian Energy Market Operator (AEMO) Services under the New South Wales (NSW) Roadmap Tender Round 5 for Long Duration Storage.

In partnership with Enervest, a leading Australian project developer, the previously announced Stoney Creek BESS located in Narrabri, NSW is a 1.0 gigawatt-hour battery system connected with a 125MVA connection, creating one of the largest 8-hour long duration battery systems in Australia. As part of AMEO Services' NSW Long Duration Storage tender, the Stoney Creek BESS contributes to the growing portfolio of projects enhancing system reliability and supporting the state's energy transition goals. The selection of Stoney Creek BESS as an LTESA project underscores the strategic importance of the project in advancing Australia’s energy transition.

Along with the Calistoga Resiliency Center in Calistoga, California and the Cross Trails BESS in Snyder, Texas expected to come online the first half of this year, the Stoney Creek BESS is expected to be one of the first Australian projects in Energy Vault’s portfolio of ‘Owned & Operated’ projects, demonstrating continued successful execution of the global growth strategy outlined during the Company’s May 2024 Investor and Analyst Day.

"The Stoney Creek project serves as an important regional milestone at large scale that demonstrates execution of our ‘Own & Operate’ growth strategy," said Robert Piconi, Chairman and Chief Executive Officer, Energy Vault. "We are quickly advancing this new market segment since announcing the strategy last May and view the Australian market as a large and important growth driver in building, maintaining and operating energy storage systems. Our expertise in designing, building, operating and maintaining energy storage systems with the highest levels of safety and reliability have uniquely positioned Energy Vault to deliver systems at lower capex and opex costs while securing long term, predictable and profitable cash flow streams for our shareholders."