HH2Greem Global Solutions
Spanish manufacturer of proprietary PEM (Proton Exchange Membrane) electrolyzers for small-to-medium scale green hydrogen production, with systems up to 1 MW and 500 kg H2/day. Founded in 2020 in Segovia as a corporate spin-off/venture-built startup of Enagás Emprende (Enagás's corporate venturing arm), which remains its main backer and industrial partner.
SectorsEnergy & Climate, Deeptech & Hardware
Start-up MapEnergy & Climate › Clean energy generation hardware
Founders
M
Mario Carrero Maroto
CEO & Founder
Global models 5
SSunfire
Germany · sunfire.de ↗
Manufactures electrolyzers (SOEC/alkaline) for industrial-scale green hydrogen production, the same electrolyzer-manufacturer business model as H2Greem.
$1BComparable
EElectric Hydrogen
United States · eh2.com ↗
Develops and manufactures electrolyzer systems to produce green hydrogen from renewable electricity, directly comparable to H2Greem's PEM electrolyzer manufacturing model.
$780MComparable
OOhmium
United States · ohmium.com ↗
Designs and manufactures modular PEM electrolyzers for green hydrogen production, the closest direct comparable to H2Greem's PEM electrolyzer technology and market.
$300MComparable
HH2Pro
Israel · h2pro.co ↗
Develops proprietary electrolysis technology to manufacture hydrogen generation systems from renewable electricity, matching H2Greem's core electrolyzer-technology business model.
$180MComparable
VVerdagy
United States · verdagy.com ↗
Builds and sells electrolyzer systems for industrial-scale green hydrogen production using proprietary electrolysis technology, similar to H2Greem's model.
$104MComparable
In the same niche 28 others
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Notes: Most funded first
Investors 1
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Funding rounds
No announced rounds on record.
News 4
Open as list →| Published | Article |
|---|---|
| 2026-10-05 |
Enagás joins the capital of digHy to enhance its renewable hydrogen plant software ↗
Demócrata
2026-10-05 |
| 2026-01-30 |
Enagás Emprende celebrates a new milestone achieved by its portfolio company H2Greem with the delivery of its first 250 kW PEM electrolyser ↗
Enagás Emprende (press release)
2026-01-30 |
| 2024-02-08 |
IMDEA Energy connects research and industry in a series of conferences at the Genera 2024 Trade Fair ↗
IMDEA Energía
2024-02-08 |
| 2023-12-08 |
Spain seizes green hydrogen after solar energy fiasco ↗
Sifted
2023-12-08 |