Texas expands portfolio of co-located solar-energy storage systems


US municipal utility CPS Energy has selected Renewable Energy Systems (RES) for the development of an integrated solar and energy storage plant.

RES will be responsible for the engineering, procurement, construction and maintenance of the plant.

Construction of the 5MW solar and 10MW/10MWh lithium-ion battery energy storage plants will begin in October 2018 with commercial operation in May 2019.

The integrated system will allow solar energy generated during the day when generation is high to be stored, to meet high energy demand during late afternoons and early evenings.

The project will help reduce reliance on fossil fuel generation, carbon emissions and consumer energy bills in the city of San Antonio, Texas.

The project is among the first co-located solar and storage projects interconnected at the distribution level within the Electric Reliability Council of Texas.

Cris Eugster, CPS Energy chief operating officer, said: “The project aligns with our Flexible Path strategy and gives us the opportunity to learn how to integrate these new technologies into our electric grid.”

Daniel Stewart, vice president of the Southwest Research Institute Powertrain Engineering Division, added: “As beneficial as the site will be to the city’s energy future, SwRI will also benefit by leveraging the facility to become even more active in the grid-scale energy storage industry and to work with battery suppliers and component manufacturers.”