Voltus raises $225M Series D, expects its platform to reach 20 GW by 2030

Voltus, which dispatches batteries, cooling systems and industrial processes at businesses and homes into electricity markets, has raised $225 million in an oversubscribed Series D, the company said on October 8, 2026. Generation Investment Management led the round with Activate Capital and Vitol as co-leads; Broadscale Group, Climate Investment, NGP, Ajax Strategies and All Aboard Fund also invested. Voltus says it expects to grow its platform to 20 GW by 2030 as it executes on its Bring Your Own Capacity (BYOC) program in PJM and MISO and expands across the US and Canada.

The virtual power plant operator counts 8.5 GW of distributed energy resources and more than 22,000 participating sites today, its website says. By our arithmetic the 2030 goal is about 2.4 times that, if the two figures count the same thing; the release does not say what the 20 GW measures, and it gives no valuation or revenue. Voltus pins the need on a NERC forecast of 24 percent peak demand growth over the next decade. NERC's January 2026 Long-Term Reliability Assessment puts the ten-year rise in summer peak demand at over 224 GW and says new data centers account for most of the projected increase in North American electricity demand.

One name on the investor list has tried to back Voltus before. In November 2021, Broadscale Acquisition Corp., a blank-check company sponsored by a joint venture of Broadscale Group and HEPCO Capital Management, agreed to take Voltus public at an estimated combined equity value of about $1.3 billion. The parties terminated the merger on August 12, 2022, after Voltus told Broadscale it could not complete the steps needed for its registration statement to become effective before the agreement's end date. Activate Capital and Ajax Strategies were existing Voltus investors then, too.

BYOC is the product the release builds the target around. Grid operators and data center operators pay Voltus to find flexible capacity and manage it when called, and Voltus passes value back to the participating energy users, its about page says. The first disclosed buyer is Google, under a three-year agreement announced June 2, 2026 for Voltus to aggregate up to 100 MW of distributed resources each year into a Google-funded virtual power plant in PJM. In August 2026, Sunrun agreed to supply capacity from part of its PJM and MISO home solar-and-battery fleet to Voltus's BYOC programs, naming no megawatt figure.

The Series D release names no BYOC buyer at all. At up to 100 MW a year, Google's contract is a long way from 20 GW, and the round is meant to pay for the distance.

The PJM rule that fell on October 9

On October 9, the day after the raise, the Federal Energy Regulatory Commission rejected most of PJM's large-load package (our coverage). It kept a Large Load definition and registry and threw out the Interim Resource Adequacy Service (IRAS), under which new large loads could be curtailed in shortages unless offset by new capacity from PJM's backstop procurement or a Bring Your Own New Capacity (BYONC) arrangement, along with the BYONC rules themselves. FERC found that parts of the plan appeared to intrude on state retail-rate regulation and that IRAS and BYONC had not been shown to be just and reasonable.

Voltus had backed the package and wanted it wider. In comments filed September 3, it told FERC it approved the IRAS proposal as a whole and argued that incentives like BYONC develop new capacity more effectively and efficiently than central procurement. PJM's filing let demand resources and aggregated distributed resources support BYONC arrangements, so demand-side capacity could offset a new large load's curtailment exposure. Voltus asked for more: new behind-the-meter generation and storage at existing sites, and dormant demand-response sites brought back, should count as new capacity too. It also told FERC that the market had been asked to pursue bilateral deals before the tariff language was final, and that parties had made commercial decisions expecting reactivated sites to qualify. PJM's September 23 answer agreed that dormant sites could be reactivated to support BYONC, according to Voltus's supplemental comments of September 29. On October 9 the whole framework was gone.

BYOC predates the filing. Voltus launched the product in September 2025, per its FERC comments, and signed Google in June 2026, two months before PJM filed IRAS on August 13. Commissioner David Rosner's concurrence also bears on a demand-response company: if PJM refiles, he wrote, it must justify curtailing IRAS load on a mandatory basis before load that has voluntarily enrolled in demand response.

Outlook

FERC's order says PJM may refile an alternative proposal under section 205 that considers its guidance, and sets no date for one. If a refiled framework again lets large loads offset curtailment with new capacity, the demand-side eligibility Voltus argued for in September would return to the table, and BYOC contracts would gain a regulatory reason to exist alongside the commercial one. Until then, BYOC rests on what buyers such as Google choose to pay for voluntarily, and the number to watch is the next contract's megawatts.