Iowa’s energy regulator has approved two projects from NextEra Energy Resources including a 300MWh co-located battery energy storage system (BESS) while utility Alliant has turned on a 5MW unit in the state.

Salt River Project is to build the largest solar-plus-storage project in Arizona, just as an historic coal plant is put to rest.

Tucson Electric Power (TEP) has touted its efforts at reinforcing its grid with three separate energy storage projects.

Landis+Gyr to supply Toshiba batteries to E.ON as Germany-based utility constructs 10MW energy storage system for Tucson Electric Power.

Tucson Electric Power (TEP), a utility in Southern Arizona with around 420,000 customers, has received approval to build two 10MW energy storage systems, including one co-located with solar, from the state’s regulator.

NextEra Energy’s CEO sees energy storage as one of three areas driving “tremendous growth” for the group and has said that discussions about renewables are “naturally” leading into dialogue on storage.