Base Power Closes $1B Series D, Its Second Billion-Dollar Round in Ten Months

Base Power raised a $1 billion Series D on August 3, 2026, led by Ribbit, Addition, Valor Equity Partners, and JPMorganChase's Strategic Investment Group, with participation from CapitalG, Thrive Capital, a16z, Coatue, and others. It follows a $1 billion Series C in October 2025, bringing total funding to $2 billion in under a year. The Austin-based company, co-founded by Zach Dell, has installed over 500 MWh of residential storage across Texas and Illinois.