Investor profile
Tim Singer
Venture capital & Business Fellow/Operating Partner at Breakthrough Energy
Tim Singer is a Business Fellow/Operating Partner at Breakthrough Energy, whose known portfolio counts 10 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Business Fellow/Operating Partner at Breakthrough Energy, whose known portfolio counts 10 companies
- Fervo Energy
- ZeroAvia
- Stoke Space
- Sygaldry Technologies
- Mangrove Lithium
- Rumin8
- Heron Power
- Fleetzero
- Arinna
- Litherm Technologies
Investor Profile
Tim Singer is listed against sectors AI, Climate, Hardware and Healthcare, and focus areas Aerospace, AgriTech, Battery and Carbon in the database.
Stage-wise, the deals at Breakthrough Energy cluster around Growth, Seed and Series A rounds.
What the affiliated firm has backed is the closest available signal on whether Tim Singer is worth approaching.
Colleagues at Breakthrough Energy
Showing 20 of 23
Bill Gates
Founder
Seattle, United States
Joel Moxley
Venture Partner
United States
Stefan Zlatev
Partner
New York, United States
Phil Larochelle
Partner
Cambridge, United States
Carmichael Roberts
Chief Investment Officer
Boston, United States
Cooper Rinzler
Partner
San Francisco, United States
Chris Rivest
Partner
Palo Alto, United States
Jeff Momplaisir
Director of Portfolio Analytics
Boston, United States
Erik Balck Sørensen
Member of LPAC of Breakthrough Energy Ventures III
Copenhagen, Denmark
Eric Toone
CTO
Raleigh, United States
Mark Hartney
Principal
Lisbon, Portugal
Gaëtan Bonhomme
Partner
Paris, France
Libby Wayman
Partner
Cambridge, United States
David T. Danielson
Investor
Bethesda, United States
Allegra Kowalewski-Ferreira
Partner and company builder
Brussels, Belgium
Christopher Poirier
Partner
Boston, United States
Brian Mayers
Affiliated
Boston, United States
Jim Cabot
Managing Director
Boston, United States
Benjamin Gaddy
Sr. Director
Washington, United States
Sila Kiliccote
Partner
San Francisco, United States
Frequently asked questions
Who is Tim Singer?
Tim Singer is a venture capital investor based in San Francisco, California, United States, listed as Business Fellow/Operating Partner at Breakthrough Energy. The known portfolio of that firm counts 10 companies. That portfolio belongs to the firm, not to Tim Singer personally.
What does Tim Singer invest in?
Listed sectors include AI, Climate, Hardware and Healthcare; listed focus areas include Aerospace, AgriTech, Battery and Carbon. 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 Tim Singer invest at?
Breakthrough Energy appears in Growth, Seed and Series A rounds across its known deals, and Tim Singer is listed there as Business Fellow/Operating Partner. 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 Tim Singer listed at?
Tim Singer is listed as Business Fellow/Operating Partner at Breakthrough Energy. 23 other people in the database share a firm with Tim Singer.
How do I contact Tim Singer?
A LinkedIn page is on file for Tim Singer. It is readable inside RaiseHunt after you create an account. The database holds no email address and no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal