MCJ Collective is a climate-focused venture capital firm that invests in early-stage startups (Pre-Seed to Series A) focused on industrial transformation and infrastructure resilience. Their strategy involves backing companies that are driving the transition of energy and industry, and solving the inevitable impacts of climate change, while also leveraging a strong community network to support their portfolio.
52% of their portfolio is in Climate & Energy. Deal activity decreased year-over-year (2 deals in the last 12 months vs 3 prior). Their most common stage is series-a (48% of deals). Average disclosed round size is $28.0M (across 27 rounds with reported amounts).
Portfolio
27
Fund Size
$115M
Top Stage
Series A
Last 12 Mo
2
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
Portfolio
| Company | Round | Amount | Date |
|---|---|---|---|
 The Nuclear Company | Series A | $51.3M | May 2025 |
 Exowatt | Series A | $70M | Apr 2025 |
 Heirloom Carbon | Series B | $150M | Dec 2024 |
 Verse | Series A | $20.5M | May 2024 |
 Quilt | Series A | $33M | Apr 2024 |
 Arch | Seed | $6.2M | Feb 2024 |
| OOpna | Seed | $6.5M | Sep 2023 |
| Verse | Seed | $5.8M | Jul 2023 |
 Odyssey | Series A | $15M | May 2023 |
| Quilt | Seed | $9M | May 2023 |
 Avalanche Energy | Series A | $40M | Apr 2023 |
 Noya PBC | Series A | $11M | Apr 2023 |
| Noya PBC | Series A | $11M | Apr 2023 |
 Kodama Systems Inc. | Seed | $6.6M | Dec 2022 |
 WeaveGrid | Series B | $35M | Nov 2022 |
 Runwise | Series A | $19M | Nov 2022 |
 Hoxton Farms | Series A | $22.5M | Oct 2022 |
 Kopperfield | Seed | $5M | Sep 2022 |
 Patch | Series B | $55M | Sep 2022 |
 Sense | Series C | $105M | Apr 2022 |
 Tender Food | Seed | $12M | Mar 2022 |
 Pachama | Unknown | $15M | Apr 2021 |
 Planet FWD | Seed | $2.5M | Dec 2020 |
 AirLoom Energy | Seed | $4M | — |
 Waterplan | Series A | $11M | — |
Top Co-Investors
Last updated: 16 April 2026