Texas-based Base Power has raised $1 billion in Series C funding, led by Addition, to accelerate the deployment of its home battery storage solutions. Existing backers, such as Trust Ventures, Valor Equity Partners, Thrive Capital, Lightspeed, Andreessen Horowitz, Altimeter, StepStone, Elad Gil, 137 Ventures, Terrain, and Waybury, returned for the round. New investors include Ribbit, CapitalG, Spark, BOND, Lowercarbon, Avenir, Glade Brook, Positive Sum, and 1789.