Key facts
- Developer of water electrolysis systems designed to produce hydrogen using renewable energy.
- It has raised $4.8M; the latest was Accelerator/Incubator in May 2025.
- Notable investors include Plug and Play Tech Center, City Light Capital, The Engine, For ClimateTech, Faber Ventures — 19 tracked in total.
- Status: Privately Held (backing).
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Funding rounds
No rounds on record
No funding rounds for 1s1 Energy are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
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About 1s1 Energy
Developer of water electrolysis systems designed to produce hydrogen using renewable energy. The company's systems are built around a proprietary proton exchange membrane that does not need any chemical activation of ion-exchange groups, enabling clients to reduce carbon footprints and reduce the cost of renewable energy sources.
- Sector
- Energy
- HQ
- Portola Valley, CA, United States
- Founded
- 2019
- Employees
- 8
- Website
- 1s1energy.com/
- Ownership
- Privately Held (backing)
Valuation — not yet priced
1s1 Energy doesn't have a valuation on record yet — one is published once a priced round, a reported valuation, fund marks, or secondary prints surface in our sources. The rest of the record below builds toward it.
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