Breakthrough Energy is a venture capital firm. Based in Kirkland, Washington, United States. The known portfolio counts 10 companies, including Fervo Energy, ZeroAvia, Stoke Space, Sygaldry Technologies, Mangrove Lithium and Rumin8.
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Investment focus
Who to pitch at Breakthrough Energy
Breakthrough Energy portfolio companies (10)
- Fervo Energy
- ZeroAvia
- Stoke Space
- Sygaldry Technologies
- Mangrove Lithium
- Rumin8
- Heron Power
- Fleetzero
- Arinna
- Litherm Technologies
Co-investors
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About Breakthrough Energy
The firm's listing covers sectors AI, Climate, Hardware and Healthcare, and focus areas Aerospace, AgriTech, Battery and Carbon; known deals cluster at Growth, Seed and Series A.
Of the 25 people on file at Breakthrough Energy, Carmichael Roberts (Chief Investment Officer) and Bill Gates (Founder) are listed as the contacts to approach first.
Across the known portfolio, 20 co-investors appear alongside Breakthrough Energy, including Martis Capital, IQT and Spacecadet.
Frequently asked questions
What is Breakthrough Energy?
Breakthrough Energy is a venture capital firm based in Kirkland, Washington, United States, with a known portfolio of 10 companies. The portfolio comes from public investment records rather than from the firm, so deals that never surfaced publicly are not in it.
What does Breakthrough Energy invest in?
Listed sectors include AI, Climate, Hardware and Healthcare; listed focus areas include Aerospace, AgriTech, Battery and Carbon. Those tags come from the portfolio attached to the firm, so they describe what has been backed rather than a stated mandate for what comes next.
What stage does Breakthrough Energy invest at?
The known deals of Breakthrough Energy include Growth, Seed and Series A rounds. Check that against your own round before reaching out: stage mismatch is the most common reason a well matched sector still goes nowhere.
Who should I pitch at Breakthrough Energy?
2 of the 25 people on file at Breakthrough Energy are listed as contacts for the firm. All 25 have their own profile page.
How do I contact Breakthrough Energy?
Any email address on file for the firm is masked on this page and readable inside RaiseHunt after you create an account. The 25 people attached to the firm have their own pages, each showing whether an address is on file for them.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal