ION Clean Energy
Boulder, US · Founded 2018 · Delaware corporation · 44 employees on LinkedIn · 1 known investors
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ION Clean Energy develops post-combustion carbon capture systems for natural gas and biomass power generation, enabling clean, firm ("Blue Power") energy and CO₂ removal credits. It targets operators serving growing power demand from data centers and AI infrastructure seeking to meet decarbonization goals.
Founders & leadership
ION Clean Energy was founded in 2018 by Buz Brown.


Investors · 1
How we know: funding news · press coverage · Not right? Tell us
Reported raises · per SEC filings
Form D private placements$70.7M disclosed across 2 of 3 rounds · 2019–2024
▶$70MraisedApr 2024 · 6 investors · Environmental ServicesRule 506(b)
- Alfred BrownDirector
- Manjae HanDirector
- Timothy VailExecutive Officer, Director
- Paul TufanoExecutive Officer
- Offering amount
- $85M
- Amount sold
- $70M
- Sales commissions
- $3.5M
- First sale
- Mar 2024
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$3.8MofferedJun 2019 · Environmental Services
- MARTIN WENZELDirector
- PAUL TUFANOExecutive Officer, Director
- ERIK MEULEMANExecutive Officer
- ALFRED BROWNExecutive Officer, Director
- HERBERT SEARSDirector
- Offering amount
- $3.8M
- Minimum investment
- $50K
- Proceeds to insiders
- $20K
- Incorporated
- Corporation, Colorado, 2018
- Federal exemptions
- 4a5
▶$652.1KraisedMay 2019 · 19 investors · Environmental ServicesRule 506(b)
- ALFRED BROWNExecutive Officer, Director
- ERIK MEULEMANExecutive Officer
- PAUL TUFANOExecutive Officer, Director
- MARTIN WENZELDirector
- HERBERT SEARSDirector
- Offering amount
- $652.1K
- Amount sold
- $652.1K
- Minimum investment
- $1K
- Proceeds to insiders
- $20K
- First sale
- May 2019
- Incorporated
- Corporation, Colorado, 2018
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
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Frequently asked questions
- What does ION Clean Energy do?
- ION Clean Energy develops post-combustion carbon capture systems for natural gas and biomass power generation, enabling clean, firm ("Blue Power") energy and CO₂ removal credits. It targets operators serving growing power demand from data centers and AI infrastructure seeking to meet decarbonization goals.
- Who founded ION Clean Energy?
- ION Clean Energy was founded by Buz Brown in 2018.
- Who are ION Clean Energy's investors?
- ION Clean Energy's investors include Carbon.
- How much funding has ION Clean Energy raised?
- ION Clean Energy has disclosed $70.7M raised across 2 of its 3 known rounds.
- Where is ION Clean Energy headquartered?
- ION Clean Energy is headquartered in Boulder, US.









