Key facts
- 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).
- ·The complete investor list — 19 names
- ·Watchlist + deal alerts for 1s1 Energy
- ·The full record, as it builds
Funding rounds
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.
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)
1s1 Energy doesn't have a composite mark yet — a PA Mark is published once enough pricing inputs exist (trade prints, fund marks, round prices). The rest of the record below builds toward it.
Recorded secondary trades
No secondary trades in 1s1 Energy shares have been recorded yet. When a print lands — third-party, direct report, or platform — it appears here with structure, source, and price.
Institutional fund marks
No SEC-registered fund has reported a fair-value mark on 1s1 Energy in its N-PORT filings yet. We sweep new filings monthly.