Energy Vault Completes Land Acquisition for 125MW/1GWh Australian BESS Project, Targeting 2028 Commercial Launch

The Quick Take

• Energy Vault has completed land acquisition for its 125 MW / 1 GWh Stoney Creek battery energy storage project in Australia after receiving FIRB foreign investment approval, converting from lease to full land ownership.
• The project is targeting construction commencement in Q1 2027, with commercial operations planned for the first half of 2028, backed by Australian government support agreements.
• The FIRB approval milestone de-risks the project's regulatory pathway and signals Canberra's continued openness to foreign-controlled energy storage investment in its grid modernisation program.

Energy Vault's Stoney Creek BESS project in Australia represents a significant milestone in the company's strategy to build large-scale battery energy storage presence in the Asia-Pacific renewable energy market. The completion of land acquisition — requiring approval from Australia's Foreign Investment Review Board, which scrutinises overseas-controlled asset purchases — signals that regulatory hurdles typically delaying energy infrastructure projects are cleared. With construction targeted for Q1 2027 and commercial operations in H1 2028, Stoney Creek will enter the market at a time when Australia's National Electricity Market faces accelerating baseload capacity retirements from ageing coal power stations requiring replacement capacity.

For the energy storage sector, Energy Vault's project adds to a growing pipeline of grid-scale BESS builds in Australia alongside competing projects from Neoen, AGL, and Origin Energy. The 125 MW / 1 GWh scale makes Stoney Creek a medium-tier installation — large enough to provide meaningful grid frequency and ancillary services revenue, but below the multi-GWh flagship projects that set pricing benchmarks. Project economics in the Australian BESS market are supported by government Capacity Investment Scheme and state-level reliability contracts, which provide revenue floor guarantees that de-risk project financing. Lithium-iron-phosphate battery cost trends, down roughly 30% since 2023, have further improved the project return profile.

Forward signals include Energy Vault securing a project financing package — the typical next step after land and regulatory milestones for BESS developments of this scale. Watch for the EPC contractor appointment announcement, which will confirm construction timeline confidence and unlock project equity commitments from infrastructure funds. The macro variable governing Australian BESS project economics is the contract-for-difference and spot power price spread in the National Electricity Market: periods of high afternoon spot power prices driven by solar intermittency are when BESS assets generate the highest discharge revenue, and future spot market dynamics depend critically on how quickly new solar generation enters the grid and compresses midday pricing levels.

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