Earlier, the company secured two additional contracts, taking the total to a combined energy storage system (ESS) capacity of 7.5MWh, deployed in 12 containers.

The energy storage system has been designed to mitigate power fluctuations inherent with solar-generated electricity.

Saft Energy Storage sales vice president Blake Frye said: "This contract showcases the vital role of battery energy storage in advancing the power grid and enabling the integration of next-generation power sources."

"After two years of successful operation and a mutually beneficial relationship with this utility, Saft continues to demonstrate its leadership in developing reliable solutions for microgrid applications."

The California investor-owned utilities should procure 1.3GW of cost-effective ESS by 2020, under the California Public Utilities Commission’s implementation of AB 2514.

Saft will contribute to the planned 32% of distribution storage under the program.

Saft’s ESS, rated at 1MW/3MWh, will be deployed at an urban educational facility to moderate the effects of shade on the rooftop solar power system by shifting energy and buffering during intermittent sunlight.