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Napanee Battery Energy Storage System
The project, valued at $600 million, was selected through the Independent
Electricity System Operator’s (IESO) Expedited Long-Term 1 (ELT-1)
competitive procurement, which was launched by the government in 2022,
and supported the single largest battery procurement in Canadian history.
“Ontario is building the infrastructure needed to power growth, protect jobs,
and keep energy reliable and a昀昀ordable for families,” said Stephen Lecce,
Minister of Energy and Mines. “The completion of the Napanee Battery
Energy Storage System is a major step forward in strengthening our clean
electricity grid and securing eastern Ontario’s energy future.”
THIS RECENTLY COMPLETED 250 MW FACILITY is capable of powering
250,000 homes during peak demand periods and is one of the largest
operating battery storage projects in Canada, marking a major milestone in
strengthening Ontario’s clean electricity grid.
The Napanee BESS includes 284 battery storage units, transformer stations,
transmission connection facilities and ancillary components that will store
electricity from Ontario’s nuclear facilities during
periods of low demand and return that stored
power to the system when demand is higher.
The project leveraged the province’s made-inOntario supply chain through 72 medium voltage
transformers, built at Stein Industries in London,
Ont. that were purchased via Nbisiing Power,
an Indigenous-owned business operating in
CLEAN POWER IN THE CAPITAL
Nipissing First Nation.
E N V I RON M E N T J OURN A L QUA RT E RLY RE PORT • S UM M ER 2 02 6 • P AGE 1 3
