Form Energy closes US$40 million funding round for its long-duration storage

By John Parnell
LinkedIn
Twitter
Reddit
Facebook
Email

Form Energy has closed a US$40 million Series B funding round led by Eni Next, the venture capital vehicle of Italian oil firm Eni.

Several Series A investors have returned, including Breakthrough Energy Ventures (BEV), the coalition of investors that includes Bill Gates, Jack Ma and Richard Branson. Prelude Ventures, MIT’s The Engine and Macquarie Capital were among those to back both rounds as well.

Capricorn Investment Group was another standout new investor.

The fresh funding will be used to create a megawatt-scale prototype.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

Form Energy, whose origins are in MIT, is developing a low-cost, long-duration battery storage system. More precise details on the technology are few and far between. Marco Ferrara, co-founder of Form Energy has previously said that the system will be capable of several days’ worth of discharge.

Speaking with the Enel Foundation, which has supported the company, Ferrara said: “We are developing meaningful scale prototypes and testing the technology in our labs. At the same time, we are working with Enel and Enel Green Power in understanding the value of this technology. In two or three years, we will be ready to deploy the first pilot projects in the field.”

Read Next

September 25, 2026
Recently, US BESS companies Energy Vault and Goshe, SMT Energy and Climate Adaptive Infrastructure, and NeoVolta and SK On have made major deals and secured strategic partnerships.
September 24, 2026
Market research firm Wood Mackenzie stated that data centre buildout is uplifting the US battery energy storage system (BESS) outlook across all segments.
September 23, 2026
GridStor, a US-based developer and operator of grid-scale battery energy storage systems (BESS) has closed a US$220 million financing agreement for the 100MW/400MWh White Tank project in Arizona, US.
September 22, 2026
Residential battery energy storage systems (BESS) across California discharged more than 580MW of peak power to the state’s grid on the evening of 9 September 2026 via a Tesla-Sunrun VPP.
September 22, 2026
Utility PG&E has selected six new California microgrid projects for a US$30 million investment, while Massachusetts’ Department of Energy Resources is awarding US$40 million across 36 BESS projects.