MUUS Climate Partners is the climate technology venture capital arm of MUUS & Company, investing at the convergence of decarbonization and technological innovation. Founded in 2022, it backs early-stage climate tech startups across energy, mobility, agriculture, and industry.
54% of their portfolio is in Climate & Energy. Their most common stage is seed (62% of deals). Average disclosed round size is $11.7M (across 11 rounds with reported amounts).
Portfolio
12
Fund Size
$50M
Top Stage
Seed
Last 12 Mo
1
Team
Kathleen Dunleavy
VICE PRESIDENT
Isaac Sonnenfeldt
ASSOCIATE
Chris Wolff
CHIEF INVESTMENT OFFICER
Kavita Patel
PORTFOLIO MANAGER, VENTURE
Dominique Pierro
ADMINISTRATIVE MANAGER
Mary Beth Bruggeman
PHILANTHROPIC ADVISOR
Michael W. Sonnenfeldt
FOUNDER AND CHAIRMAN
Tani Brown
HEAD OF PLATFORM
Wendy Gartenberg
CHIEF FINANCIAL OFFICER
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
Portfolio
| Company | Round | Amount | Date |
|---|---|---|---|
 Stardust Solutions | Seed | $60M | Oct 2025 |
 Inventwood | Series A | $15M | Apr 2025 |
 AmpUp | Series A | $15M | Sep 2024 |
 Aepnus | Seed | $8M | Jun 2024 |
 Harvest Thermal | Seed | $2.5M | Oct 2023 |
 Harvest Thermal | Unknown | $4M | Jan 2023 |
 Cache Energy | Seed | $8.5M | — |
 Niricson | Series A | — | — |
 RailVision | Seed | $4M | — |
 RailVision | Seed | $4M | — |
| RRailvision Ca | Seed | — | — |
 NxLite | Seed | $4M | — |
| Harvest Thermal | Unknown | $4M | — |
Top Co-Investors
Last updated: 20 October 2026