Carbon Direct Capital is a venture capital firm that invests in growth companies within the carbon management ecosystem, focusing on technologies and nature-based solutions for carbon removal and utilization. The firm primarily participates in Series A funding rounds for US-based startups, aiming for both climate impact and financial returns.
89% of their portfolio is in Climate & Energy. Deal activity decreased year-over-year (1 deals in the last 12 months vs 2 prior). Average disclosed round size is $157.6M (across 7 rounds with reported amounts).
Portfolio
9
Fund Size
—
Top Stage
Series A
Last 12 Mo
1
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
9 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Neurophos | Series A | $110M | Jan 2026 |
 Heirloom Carbon | Series B | $150M | Dec 2024 |
| GGraphyte | Series A | $30M | Jul 2024 |
 Syzygy Plasmonics | Series C | $76M | Nov 2022 |
 Air Company | Series A | $30M | Apr 2022 |
 Solugen | Series C | $350M | Sep 2021 |
| Air Company | Unknown | — | — |
| HHeirloom | Unknown | — | — |
| Solugen | Growth | $357M | — |
Top Co-Investors
Toyota3 shared
Breakthrough Energy Ventures3 shared
Lowercarbon Capital3 shared
JetBlue2 shared
M12 (Microsoft)2 shared
Ahren Innovation Capital2 shared
GIC2 shared
Baillie Gifford2 shared
Temasek Holdings2 shared
Fifty Years2 shared
Prelude Ventures1 shared
Overture1 shared
Future Positive Capital1 shared
Japan Airlines1 shared
MCJ Collective1 shared
Mitsubishi Corporation1 shared
MOL Switch1 shared
Siemens Financial Services1 shared
Chevron Technology Ventures1 shared
Evok Innovations1 shared
Last updated: 13 March 2026