Amazon signs tolling agreement for 50 MW/200 MWh BESS in Australia
US tech giant Amazon has signed a tolling agreement with Anza Power, an Australian subsidiary of US infrastructure investment firm I Squared Capital, for the under-development 50 MW/200 MWh Bairnsdale battery energy storage system (BESS) in Victoria, Australia.
The agreement grants Amazon access to energy stored in the Bairnsdale BESS, as well as rights to control charging and discharging and use grid arbitrage. In return, Amazon will pay Sydney-headquartered Anza Power a regular fixed fee without the responsibility of building or maintaining the facility.
Significantly, the agreement is a first globally for Amazon for a standalone BESS, and for Australia, represents a first tolling agreement for a non-energy business.
Other companies entered into BESS tolling agreements in Australia include gentailers or developers such as EnergyAustralia and Akaysha Energy, which has a 12-year virtual tolling agreement with the Orana BESS.
The Bairnsdale BESS will connect directly to the electricity grid as a standalone asset, providing dedicated storage capacity independent of a solar or wind farm.
Anza Chief Executive Officer Carlo Frigerio said the agreement reflects the growing demand from major energy purchasers for dedicated storage solutions that support a reliable, low-carbon grid.
“Bairnsdale demonstrates our ability to deliver flexible energy infrastructure that respond to the evolving needs of both the market and our customers,” Frigerio said. “We look forward to building on the momentum we have established since launching Anza earlier this year.”
Anza and Amazon have other existing agreements including five solar-plus-battery storage power purchasing agreements (PPAs).
The Bairnsdale BESS marks the seventh energy agreement signed since Anza was formed and launched by I Squared Capital in January 2026 with a AUD 418.5 million ($300 million) equity commitment through I Squared Capital’s ISQ Growth Markets Infrastructure Fund II.
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