Vitol joins $225 million bet on Voltus as data centers scramble for grid power

A group of investors that includes Vitol SA is putting nearly a quarter billion dollars into Voltus, a San Francisco power technology company, according to Bloomberg. The round is a $225 million Series D that closed on or around October 8, 2026. Generation Investment Management led it, with Vitol and Activate Capital among the other backers. For a company that had raised approximately $66 million in total before this deal, that is a big step up. The pitch behind the money is simple. Data centers want electricity faster than the grid can hook them up, and Voltus says it can help close that gap. What Voltus actually does Voltus runs a distributed energy resources (DER) platform and a virtual power plant (VPP) that link resources to electricity markets across North America. The other piece of the business is demand response. Customers dial their electricity use up or down when the grid needs relief, and they get paid or save money for doing it. Voltus serves as the middleman, connecting that flexibility to the markets that value it. The company’s 2025 numbers give a sense of scale. Voltus reported record customer earnings and savings of $240 million for the year. It managed 8.1 GW of ...