On October 8, 2025, Base Power, a battery-powered home energy company based in Austin, Texas, announced it raised $1 billion in Series C financing led by Addition. Existing investors that participated include Trust Ventures, Valor Equity Partners, Thrive Capital, Lightspeed, Andreessen Horowitz, Altimeter, StepStone, Elad Gil, 137 Ventures, Terrain, and Waybury. New major investors joining the round are Ribbit, CapitalG, Spark, BOND, Lowercarbon, Avenir, Glade Brook, Positive Sum, and 1789. Wilson Sonsini Goodrich & Rosati advised Base Power on the transaction.

In less than two years, Base has deployed more than 100 MWh of residential battery capacity. The company has broadened its footprint across the Dallas–Fort Worth metroplex, Greater Houston, and the Austin region, with plans to expand nationally.

The Wilson Sonsini team that advised Base Power on the transaction was led by partners Damien Weiss and Jordan McDonnel. The team also includes Estefano Martinez and Jason Choi.

For more information, please see Base Power's news release. Additional coverage can be found on The New York Times.