French utility Engie has started commercial operations at its 68MW Tamaya battery energy storage system (BESS) on the site of its former diesel-fired power plant near Tocopilla in northern Chile's Antofagasta region.
BESS Tamaya will store electricity generated by the 114MW Tamaya photovoltaic (PV) plant on the same site, which began operations in February 2022.
The company is "repurposing the site to give it a second life and continue contributing to the local economy," said Engie Chile chief executive Rosaline Corinthien.
BESS Tamaya consists of 152 lithium battery containers with a storage capacity of 418MWh. It will be able to supply 50,800 homes over five hours of peak demand.
Engie is also constructing the 116MW Tocopilla BESS operation at its former Tocopilla coal and fuel oil-fired power complex in the same region. It disconnected the complex from the grid in September 2023.
Engie is the fourth-largest generator in Chile with 2.6GW of installed capacity. Its BESS portfolio consists of 2GWh in operation and construction.
The conversion of fossil fuel-fired plants is part of Chile's decarbonization plan to ensure a "just" energy transition, providing new sustainable economic activity for communities.
Since 2019, Chile has withdrawn 11 coal plants for a combined 1.7GW and is committed to closing the remaining 17 coal plants by 2040.