John Harper is an Angel Investor at Clean Energy Venture Group, whose known portfolio counts 10 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Angel Investor at Clean Energy Venture Group, whose known portfolio counts 10 companies
- Carbon Upcycling
- Advanced Ionics
- Kuva Systems
- Electrified Thermal Solutions
- PeelON
- VoltServer
- Queens Carbon
- QEA Tech
- Cala Systems
- Stockitai
Investor Profile
The listing covers sectors Climate, FinTech, Hardware and Real Estate, and focus areas Analytics, Battery, Carbon and Clean Energy. Startups operating in these areas may find John Harper relevant.
Clean Energy Venture Group appears in Seed, Series A and Series B rounds across its known deals.
The firm portfolio and the focus above give founders context on whether John Harper matches their raise.
Colleagues at Clean Energy Venture Group
Michael Brower
Affiliated
Brookline, United States
Laury Saligman
Investor
Montpelier, United States
Nora Mead Brownell
Investor
New Alexandria, United States
Wanda Reindorf
Investor
Brookline, United States
Merrick Andlinger
Investor
Montclair, United States
Amy Davidsen
Investor
New York, United States
Francois Odouard
Managing Partner
Larchmont, United States
Frequently asked questions
Who is John Harper?
John Harper is a syndicate member based in Framingham, Massachusetts, United States, listed as Angel Investor at Clean Energy Venture Group. The known portfolio of that firm counts 10 companies. That portfolio belongs to the firm, not to John Harper personally.
What does John Harper invest in?
Listed sectors include Climate, FinTech, Hardware and Real Estate; listed focus areas include Analytics, Battery, Carbon and Clean Energy. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does John Harper invest at?
Clean Energy Venture Group appears in Seed, Series A and Series B rounds across its known deals, and John Harper is listed there as Angel Investor. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is John Harper listed at?
John Harper is listed as Angel Investor at Clean Energy Venture Group. 7 other people in the database share a firm with John Harper.
How do I contact John Harper?
An email address, a phone number and a LinkedIn page are on file for John Harper. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal