What does Quantum Energy Partners invest in?
Quantum Energy Partners invests most often at Series D (100% of the rounds on record), in sectors such as Climate & Impact, ClimateTech & CleanTech and Energy.

United States · Investor
Filed with the SEC to raise a fund in Nov 2025, closing $3,459M. Last cheque observed Oct 2019.
QuietNew fund $3.5B, Nov 2025VC firmNow at quantumcap.com
1 rounds on record
Mostly Series D: 100% of its rounds
Filed 1 private fund offering with the SEC, the most recent in 2015-05From their own website
Every round we can evidence, newest first1 appearances
1 round
An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.
Named by the firm itself, on a filing, its Form ADV or its company registration12 named
We also hold 34 people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them.
The latest companies Quantum Energy Partners put money into.
Quantum Energy Partners invests most often at Series D (100% of the rounds on record), in sectors such as Climate & Impact, ClimateTech & CleanTech and Energy.
1 investments on record, 0 of them in the last 12 months. The most recent was in Oct 2019.
Its most recent investments on record: RigUp (Series D, Oct 2019).
The median round it joins is $300M.
No investments in the last 12 months; the latest was in Oct 2019.
Quantum Energy Partners is a VC firm based in Houston, United States.
Its latest fund filing with the SEC was in Nov 2025, reporting $3.5B raised.
Quantum Energy Partners was founded in 1998.
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