A San Francisco power technology company just landed $225 million to solve one of the thorniest problems in the AI boom: how to get massive data centers plugged into the grid without waiting years in an interconnection queue. Voltus Inc. closed a Series D financing round backed by energy trading giant Vitol, aiming to unlock existing grid capacity by paying everyday electricity users to shift when they use power.
Vitol is among the investors backing Voltus, according to Bloomberg, which reports the company scales shifts in energy usage so data centers can connect to grids sooner and aims to make power grids more efficient by drawing more energy from existing infrastructure. The outlet frames the investment against a backdrop of power grids facing increasing strain from data center demand growth and extreme weather, even as consumers face soaring electricity costs.
Voltus has been down this financing road before. The company once agreed to go public in December 2021 through an $816 million SPAC merger with Broadscale Acquisition Corp., but the deal was mutually terminated in August 2022 amid a broader collapse of the SPAC market, according to SPACInsider.
How Bring Your Own Capacity Works
The financial muscle behind this round traces back to a product Voltus launched in late 2025 called Bring Your Own Capacity, or BYOC, which lets data center developers and AI hyperscalers fund offsite virtual power plants and demand-response capacity to speed up their grid interconnection approvals, the company has said. The pitch is straightforward: rather than relying solely on new transmission lines or power plants, a data center operator pays to unlock existing grid capacity, much of which sits unused for much of the year.
Google became an early and prominent validator of that approach. The tech giant entered a three-year deal with Voltus in June to fund a 100-megawatt virtual power plant in the PJM Interconnection grid, paying residential and commercial energy users to shift usage during peak hours, as reported by Utility Dive. That freed-up capacity gets redirected toward the data centers Google needs to train and run its AI models.
Residential solar installer Sunrun followed in August, signing an agreement to integrate home battery and solar systems across the PJM and MISO regions into the BYOC framework. The deal effectively turns rooftop solar panels and garage batteries into building blocks of data center power supply.
Industrial Partners Join the Platform
Voltus has also been shopping for technology to round out its platform. The company acquired energy storage software startup Brightfield AI in June, adding artificial intelligence tools for deploying commercial and industrial battery storage systems into its demand-response network, according to a GlobeNewswire release.
Industrial conglomerate Siemens joined the effort this month, linking its Peak Demand Limiting building management software directly with the Voltus virtual power plant platform so commercial and institutional facilities can monetize automated load reduction, according to SemiWiki.
Why Vitol Is Betting on Flexible Power
Vitol, a global commodity trader, is among the investors backing Voltus.
The scale of that opportunity is enormous. The U.S. Energy Information Administration projected national electricity consumption of 4.268 trillion kilowatt-hours in 2026 and 4.391 trillion kWh in 2027. Goldman Sachs research has separately estimated that total U.S. data center power demand will double from 31 gigawatts in 2025 to 66 gigawatts by 2027.
That demand surge is already reshaping how data centers get built across the country. Hoodline has reported on behind-the-meter generators in Oklahoma City. Voltus's bet is that paying ordinary homeowners and business owners to flex their power use, rather than waiting on new plants or transmission lines, is the faster and cheaper path forward for an industry racing to bring billions of dollars in AI infrastructure online.
