DOSSIER · UPDATED 18 NOV 2025

Ohmium

Ohmium manufactures standardized interlocking modular Proton Exchange Membrane (PEM) electrolyzers able to produce pressurized high-purity hydrogen. Individual electrolyzers can be stacked to reduce installation and maintenance costs while…

ohmium.com ↗Claim this profile

Founded: 2019
Headcount: 229
Open roles: 0
Last raised: Series C · $250M

SECTION I · THE BRIEF

Inside Ohmium

Brief #44029Updated 18 NOV 2025INCLINE VILLAGEMANUFACTURING COMPANIESSERIES C

Employbl Dossier

Ohmium

Founded: 2019
Headcount: 229
Open roles: 0
Last raised: Series C · $250M

Section II · Premium ProfileMembers only

01Engineering interview process at OhmiumLocked
02Tech stack & infrastructure choicesLocked
03Culture & day-to-day work styleLocked
04Why join now vs. 6 months from nowLocked
05Hiring focus & open headcount by teamLocked
06Comp philosophy and band contextLocked

Open Ohmium brief Sign in

7-day free trial · $25/mo · cancel anytime

LEADERSHIP

Founders & key people

Arne Ballantine

CEO at Ohmium

OhmiumBloom EnergyPlug PowerIBMNavyNavyHarvey Mudd College

Kirsten Burpee

CCO at Ohmium

Ohmium

OPEN ROLES

Hiring at Ohmium

No open roles listed right now. Check back soon or search all jobs →

FUNDING

Capital raised

Total Amount Raised: $297,000,000

Ohmium Funding Rounds

Series C
$250,000,000
Apr 26, 2023
Series C
$250,000,000
Apr 25, 2023
Series C Investors
TPG Rise Climate Fund
Energy Transition Ventures
HNVR
Fenice Investment Group
Series B
$45,000,000
Apr 14, 2022
Series B
$45,000,000
Apr 13, 2022
Series B Investors
Fenice Investment Group
Energy Transition Ventures
Seed
$2,000,000
May 10, 2020
Seed
$2,000,000
May 9, 2020
Seed Investors
Northern Star Partners