October 17, 2019: A 300MWh ‘solar-after-sunset’ project to be built on the US island territory of Guam will be the largest in the world says energy provider Engie, which has successfully bid for the contract.
The system is scheduled to go online in July 2022 to deliver more than 85GWh of dispatchable energy a year.
The Guam Power Authority, in the Western Pacific, approved Engie as a successful bidder to build two solar-plus-storage projects under a 20-year power purchase agreement, with a view to formalizing the deal with a contract to the France-based firm.
The solar power will be stored for up to seven hours after sunset in a lithium battery from Engie, which says the battery will be twice the size of the largest in the world.
The world’s current largest battery is Tesla’s l00MW/129MWh lithium battery in South Australia, which is paired with the Hornsdale wind farm.
“We are proud to contribute to Guam Power Authority’s pioneering vision,” said Engie CEO Carlalberto Guglielminotti. “This is an iconic project which sets a paradigm shift for the zero-carbon transition: Engie EPS’s technological edge makes it now possible to provide solar power at night cheaper than conventional generation.”
Engie is working with the GPA to obtain necessary approvals for the PPA and once granted, the installation can go ahead.