CoServ is expanding a residential battery program that has added 75 megawatts of home storage across North Texas since March.

Denton County Electric Cooperative, known as CoServ, and Austin-based Base Power said Nov. 10 they are growing the program to 450 megawatts. That is more than four times the original 100-megawatt target set when the two companies launched the effort in March. The program is open to CoServ members, including homeowners in Flower Mound and Highland Village.

CoServ serves more than 330,000 electric meters across its North Texas service territory. Since the March launch, Base Power has installed roughly 10 megawatts per month at members' homes, according to the announcement. CoServ said that pace is much faster than alternative resources for adding reliable capacity to its system.

How it works

Each battery provides whole-home backup during outages. The units also feed into a networked fleet that CoServ dispatches during peak demand to shave load and perform energy arbitrage, according to a CoServ press release from the program's March launch. Base Power handles installation and ongoing maintenance. CoServ controls when the fleet charges and discharges.

For homeowners with existing solar panels, the battery can pair with either the solar system or the grid, depending on availability.

"Seventy-five megawatts later, CoServ members have made clear how much they value affordable, reliable backup power," Zach Dell, co-founder and CEO of Base Power, said in the Nov. 10 announcement. "We're proud to expand to 450 MW and bring that protection to thousands more homes across North Texas."

Gary Franzen, chief energy resources officer at CoServ, said the rapid member adoption reinforced the case for growing the program beyond its original scope.

"Expanding the program allows us to build on that momentum and create an even larger resource that benefits participating Members and the broader CoServ system," Franzen said.

What's next

The expansion comes as Base Power, founded in 2023, grows nationally. The company recently announced a partnership with Walmart to offer its batteries at select Walmart and Sam's Club stores in Texas and launched its first utility partnership outside the state with Central Georgia EMC.

Neither the announcement nor CoServ's earlier press release specified what the batteries cost homeowners or how many individual homes have received units so far.

CoServ members can sign up for the program at basepowercompany.com/coserv.