Noon Energy
Palo Alto, US · Founded 2018 · 8 known investors
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Noon Energy develops ultra-long-duration battery storage using a reversible solid oxide fuel cell and carbon-based storage media to deliver 100+ hours of clean, firm power. Its systems target commercial and industrial operations, microgrids and islands, and data centers and grid-scale energy applications.
Founders & leadership
Noon Energy was founded in 2018 by Mary Kalee Whitehouse, Chris Graves, and Kalee Whitehouse.
Board

Investors · 8
How we know: At One Ventures's portfolio page · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Clean Energy Ventures's portfolio page · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: collabfund.com · Not right? Tell us
How we know: the VCSheet dataset · Not right? Tell us
How we know: Xplorer Capital's portfolio page · Not right? Tell us
How we know: the VCSheet dataset · Not right? Tell us
Reported raises · per SEC filings
Form D private placements$30.7M disclosed across 2 rounds · 2020–2022
▶$27.7MraisedDec 2022 · 31 investors · Other TechnologyRule 506(b)
- Richard M. SwansonDirector
- K. Tibor TothDirector
- Jeffrey WeissDirector
- Christopher Ronald GravesExecutive Officer, Director, Promoter
- Mary Kalee WhitehouseExecutive Officer, Promoter
- Offering amount
- $27.7M
- Amount sold
- $27.7M
- Minimum investment
- $9K
- First sale
- Nov 2022
- Incorporated
- Corporation, Delaware, 2018
- Federal exemptions
- 06b
▶$3MraisedJan 2021 · 4 investors · Other TechnologyRule 506(b)
- Christopher Ronald GravesExecutive Officer, Director, Promoter
- Richard M. SwansonDirector
- Amy DuffuorDirector
- Mary Kalee WhitehouseExecutive Officer, Promoter
- Offering amount
- $3M
- Amount sold
- $3M
- Minimum investment
- $100K
- First sale
- Dec 2020
- Incorporated
- Corporation, Delaware, 2018
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Founder mafia
3 people who came through Noon Energy went on to found or lead other companies.
Related companies · 3
Companies working in the same space as Noon Energy.
Non-dilutive funding · 3 SBIR/STTR awards
Federal grants — no equity taken| Agency | Phase | Year | Amount |
|---|---|---|---|
| ARPA-E | Phase II | 2020 | $250K |
| ARPA-E | Phase I | 2020 | $250K |
| National Science Foundation | Phase I | 2020 | $225K |
Source: SBIR.gov award data (U.S. Small Business Administration). SBIR/STTR awards are competitive federal R&D grants and contracts — non-dilutive capital alongside any venture rounds above.
Frequently asked questions
- What does Noon Energy do?
- Noon Energy develops ultra-long-duration battery storage using a reversible solid oxide fuel cell and carbon-based storage media to deliver 100+ hours of clean, firm power. Its systems target commercial and industrial operations, microgrids and islands, and data centers and grid-scale energy applications.
- Who founded Noon Energy?
- Noon Energy was founded by Mary Kalee Whitehouse, Chris Graves, Kalee Whitehouse in 2018.
- Who are Noon Energy's investors?
- Noon Energy's investors include At One Ventures, Azolla Ventures, Clean Energy Ventures, Collaborative Fund, Prime Impact Fund, TechEnergy Ventures, Xplorer Capital, Aramco Ventures.
- How much funding has Noon Energy raised?
- Noon Energy has disclosed $30.7M raised across 2 rounds.
- Where is Noon Energy headquartered?
- Noon Energy is headquartered in Palo Alto, US.









