It is operated by Tesla .
It is provides a total of 129 megawatt - hours ( 460 GJ ) of storage capable of discharge at 100 megawatts ( 130,000 hp ) into the power grid .
It is operated by Tesla and provides a total of 129 megawatt - hours ( 460 GJ ) of storage capable of discharge at 100 megawatts ( 130,000 hp ) into the power grid .