Portuguese renewables company EDP Renovaveis SA (<a href="https://live.euronext.com/en/product/equities/ES0127797019-XLIS" target="_blank">ELI:EDPR</a>) has struck a 15-year energy storage service agreement (ESSA) in the US state of California to commercialise a 92-MWac/386 MWh battery energy project it has set there.