Form Energy

Form Energy develops multi-day energy storage systems for electric grids.

Climate and energy Manufacturing and industrial

Latest funding

$750M Series B+ · August 12, 2026

Led by T. Rowe Price · Source: Pulse 2.0

Total raised: $1.84B across 4 sourced rounds

All 4 rounds ↓

Website: formenergy.com.

X: @FormEnergyInc · 6,546 followers.

LinkedIn: form-energy.

Categories: Climate and energy Manufacturing and industrial.

Sectors: Battery, Clean Energy, Energy Storage, Manufacturing, Software.

Stage: Series B+.

Based in: Somerville, United States.

Founded: 2017.

Total raised: $1.84B in 4 sourced rounds.

Last round: Aug 12, 2026 · 95 days ago.

Headcount: 501–1000 employees.

On Recent Funding since: Sep 29, 2026.

Signals

X account@FormEnergyInc · created Feb 16, 2018 (8 years old) · 6,546 followers

Website registeredOct 19, 2009 (17 years old)

About Form Energy

It makes an iron-air battery system that stores and discharges electricity for up to 100 hours. The company also develops Formware, grid modeling software for evaluating energy storage and power system designs. Its customers include utilities, technology companies, and other large power users.

TIMELINE · MONEY RAISED

Form Energy | 1286 days from X account to first raise on record

@FormEnergyInc·Raised $1845M in 4 sourced rounds·1 signal before the first raise

Money raised, round by round (amounts linked to their source). Pins are dated signals; hover the icons for dates.

Funding rounds

Date	Round	Amount	Lead	Source
Aug 12, 2026	Series B+	$750M	TT. Rowe Price	Pulse 2.0
Oct 9, 2024	Series B+	$405M	TT. Rowe Price	mercomcapital.com
Oct 5, 2022	Series B+	$450M	TTPG Rise Climate	techcrunch.com
Aug 25, 2021	Series B+	$240M	AArcelorMittal XCarb innovation fund	mercomcapital.com

Timeline

February 16, 2018
X account created
October 19, 2009
Website created

Founders and team

MF
Marco Ferrara Founder

LinkedIn
MJ
Mateo Jaramillo Founder

LinkedIn
TW
Ted Wiley Founder

@theodorewiley
WW
William Woodford Founder

LinkedIn
YC
Yet-Ming Chiang Founder
CW
Claire Woo Director of Project Engineering
CB
Charlotte Beard Vice President Finance
ZJ
Zachary Judkins Vice President, Systems Engineering

Investors

Companies like Form Energy

RReverion$175M Series B+ · Sep 2026
RRedwood Materials$550M Series B+ · Jul 2026
EElement Energy$73M Series B+ · Nov 2023
EExowatt$70M Series A · May 2026
PPowin$135M · Jul 2022
TTheStorage$4.2M Seed · Apr 2026

Other companies backed by T. Rowe Price

EEnveda$311M Series B+ · Sep 2026
HHarvey$550M Series B+ · Sep 2026
SSocure$156M Series B+ · Aug 2026
HHadrian$1.37B Series B+ · Aug 2026
RRedwood Materials$550M Series B+ · Jul 2026
KK2 Space$500M Series B+ · Jul 2026

T. Rowe Price portfolio →

Sources and API

Every amount links to the page it came from. * Estimated from an accelerator's published standard deal, not a company-specific disclosure. How Recent Funding sources and verifies funding data. The same data as JSON: /api/v1/companies/form-energy (get a free API key).