The commercial manager for Balance Power, one of two UK developers to have announced project approvals this week, has questioned whether the market standard 2-hour duration is enough for net zero.

NextEra’s eight-hour energy storage project in California will use lithium-ion technology, but ‘battery chemistry did not play a major role in project evaluation’, offtaker Clean Power Alliance told Energy-Storage.news.

California utility Clean Power Alliance has inked a 15-year PPA with NextEra Energy Resources for an eight-hour duration energy storage project.

Duke Energy would still choose lithium-ion for an upcoming 7.3-hour duration energy storage system in Florida if it redesigned the project today, a spokersperson told Energy-Storage.news.

A group representing community energy suppliers in California has made its second long-duration energy storage procurement.