Ohmium

Ohmium designs and commissions reliable, cost-effective green hydrogen electrolyzers that boost your business’s operational efficiency, sustainability, and economics.

Climate and energy Manufacturing and industrial

Latest funding

$250M Series B+ · May 7, 2023

Led by TPG Rise Climate · Source: fundraisingfox.com

Latest round on record: Series B+, October 2024, amount undisclosed.

All 2 rounds ↓

Website: ohmium.com.

X: @OhmiumInc · 117 followers.

LinkedIn: linkedin.com.

Categories: Climate and energy Manufacturing and industrial.

Sectors: Clean Energy, Energy, Manufacturing, Renewable Energy.

Stage: Series B+.

Based in: Fremont, United States.

Founded: 2019.

Last round: Oct 25, 2024 · 748 days ago.

Headcount: 501–1000 employees.

On Recent Funding since: Nov 8, 2026.

Signals

X account@OhmiumInc · created Jun 2, 2023 (3 years old) · 117 followers

Website registeredAug 14, 2020 (6 years old)

TIMELINE · MONEY RAISED

Ohmium | 1285 days on the record

@OhmiumInc·Raised $250M in 1 sourced round

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

Funding rounds

October 25, 2024
Series B+ · amount undisclosed
Source: fundraisingfox.com
June 2, 2023
X account created
May 7, 2023
Series B+ · $250M
TTPG Rise Climate (lead), EEnergy Transition Ventures, FFenice Investment Group
Source: fundraisingfox.com
August 14, 2020
Website created

Founders and team

AB
Arne Ballantine Founder

LinkedIn
KB
Kirsten Burpee Founder

LinkedIn
MT
Markus Tacke CEO
ES
Enakshi Singh CFO
PD
Paul Dainora CCO

Investors

Companies like Ohmium

NNerdio$500M Series B+ · Mar 2025
NNewtrace$6.3M Seed · Aug 2026
HHysata$111.3M Series B+ · May 2024
AAyrton Energy$5M Seed · Sep 2024
LLeanwatts$2M Seed · Sep 2026
AAntoraSeries B+ · Jul 2026

Other companies backed by TPG Rise Climate

FForm Energy$750M Series B+ · Aug 2026
PPersefoni$23M Series B+ · Apr 2025
SSyre$100M Series A · May 2024

TPG Rise Climate 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/ohmium (get a free API key).