Construction begins on ACT''s 250 MW Williamsdale BESS
May 28, 2025 · ACT and Eku Energy start building the 250 MW/500 MWh Williamsdale BESS, powering one-third of Canberra during peak hours and operational by 2026.
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6 Frequently Asked Questions about “Canberra Office Building Energy Storage Project”
What is the Big Canberra battery project?
The Big Canberra Battery project has also considered the role of neighbourhood-scale batteries in the ACT's battery ecosystem. generate revenue for the ACT.
What is the act doing to secure Canberra's energy supply?
Generic artist impression of a utility scale battery project. The ACT Government is further securing Canberra's energy supply with a new long-term partnership with Macquarie's Green Investment Group global specialist energy storage team, Eku Energy.
Why should we use batteries in Canberra?
Batteries can store excess renewable energy to be used at later times of higher demand - thereby extending the benefit of renewable energy into the evenings. It will increase the renewable energy hosting capacity across the ACT enabling more Canberrans to access the benefits of renewables.
How much energy will a large-scale battery energy storage system provide?
The large-scale battery energy storage system (BESS) will provide at least 250 megawatts (MW) of power. This is enough energy to power one-third of Canberra for two hours during peak demand periods. This stored energy will be used to support our electricity grid.
What is a battery energy storage system (BESS)?
This is often in the early evenings when demand peaks and the sun is no longer shining. The large-scale battery energy storage system (BESS) will provide at least 250 megawatts (MW) of power. This is enough energy to power one-third of Canberra for two hours during peak demand periods.
How much does a battery energy storage system cost?
The 250-megawatt (MW), 500 megawatt-hour (MWh) battery energy storage system (BESS) is expected to store enough renewable energy to power one-third of Canberra for two hours during peak demand periods. The BESS will cost between $300 and $400 million to build and will be developed, built and operated by Eku Energy.