Distributed energy resource (DER) technology company Voltus announced that it has raised $225 million in a Series D financing round, with proceeds aimed at expanding the company’s platform to help add flexibility to electricity grids to enable address growing capacity shortages and enable a more resilient, affordable, and cleaner grid.

Founded in 2016, San Francisco-based Voltus operates a distributed energy resource (DER) platform and virtual power plant operator that connects distributed energy resources to electricity markets, delivering less expensive, more reliable, and more sustainable electricity. The company’s solution taps the latent capacity in batteries, cooling systems, and industrial processes across thousands of businesses and homes and dispatches it into electricity markets, enabling the grid to draw more out of existing infrastructure, while allowing participants to reduce, shift, or supply power to lower energy costs and earn revenue.

Voltus said that that the new capital will be used to support its plans to expand its platform to 20 GW by 2030, through scaling its Bring Your Own Capacity (BYOC) programs and accelerating battery deployment.

The financing follows an agreement in June 2026 between Voltus and Google, the company’s first BYOC customer, to aggregate up to 100 MW of distributed energy resources annually in the PJM electricity market.

Dana Guernsey, CEO of Voltus, said:

“Electricity is now the constraint behind almost every major ambition we have, but it doesn’t have to be. The question is no longer whether the grid needs flexibility, it’s how quickly we can make it foundational.”

Generation Investment Management led the round, alongside co-lead investors Activate Capital and Vitol. Other investors included Broadscale Group, Climate Investment, NGP, Ajax Strategies and All Aboard Fund.

Dave Easton, Partner, Growth Equity at Generation Investment Management, said:

“As electricity demand rises, the fastest, most cost effective and lowest-carbon source of new capacity is often the one already connected to the grid. Voltus turns the flexibility of businesses, homes and batteries into reliable power, helping the AI buildout meet its growing energy needs while reducing pressure to build new fossil-fuel infrastructure and making it easier to integrate renewables.”