September 26, 2018

Leadership Circle Member RES Awarded $16.3M Solar & Energy Storage Project with CPS Energy

ESA is excited that our Leadership Circle member, Renewable Energy Systems (RES), was selected by San Antonio utility CPS Energy to build and install a $16.3 million solar and energy storage project. The station will be on the Southwest Research Institute’s (SwRI) 1,200-acre campus in San Antonio and is an important step for energy modernization in Texas.

The CPS Energy solar and energy storage systems consist of 5 MWAC of distributed solar capacity co-located with a 10 MW/10 MWh Battery Energy Storage System (BESS) controlled by RESolve. This project combines distributed solar generation with strategically sized and configured electrochemical energy storage. In addition, the technologies are interconnected at distribution voltage on a common feeder.

“RES is excited to partner with CPS Energy to construct a solar and energy storage project,” said Tom Duckett, RES Executive Vice President. “Having 3 GW of wind and 238 MW of solar already constructed or under construction in the state, marks RES’ first energy storage project in Texas and utilizes RES’ industry leading energy storage control platform, RESolve.” 

Groundbreaking for the facility in San Antonio’s Highway 151 Corridor is scheduled for October 8, 2018 with commercial operation commencing by summer of 2019.

Once operational, the system will allow for peak mid-day solar production to be stored and added onto the grid in late afternoon and early evening. This results in a reduced reliance of fossil fuel to meet peak demand during these periods. Not only is this a scalable approach to meeting peak electrical demand, but it also lowers emissions and increases flexibility.

“The popularity of solar plus storage today has allowed more traditional renewable developers to enter the storage market and those developers are seeing the benefits of storage,” Duckett said.

We congratulate RES for this opportunity and look forward to an increase in solar and storage projects around the country.  Have an idea for our next Spotlight on Storage? Shoot us an email at!

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