Helios Climate Ventures is an early-stage venture capital firm that invests broadly in climate tech with a specialization in the energy storage ecosystem, aiming to address climate change by developing and scaling breakthrough technology solutions.
Deal activity decreased year-over-year (1 deals in the last 12 months vs 2 prior). Average disclosed round size is $31.4M (across 12 rounds with reported amounts).
Portfolio
11
Fund Size
—
Top Stage
Series A
Last 12 Mo
1
Team
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
12 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 DG Matrix | Series A | $60M | Feb 2026 |
| GGDI | Series A | $13.3M | May 2025 |
 Coreshell | Series B | $24M | Mar 2025 |
| MMaxterial | Series A | $8M | Jun 2024 |
 Summit Nanotech | Unknown | $50M | Jan 2023 |
 Liminal | Unknown | $17.5M | — |
 Ambient Photonics | Series A | $31M | — |
 ZincFive | Series D | $54M | — |
| LLiminal Insights | Unknown | $17.5M | — |
| ZZincFive Inc. | Series D | $54M | — |
| ZZincFive Inc. | Series F | $30M | — |
| LLiminal Insights Inc. | Unknown | $17.5M | — |
Top Co-Investors
Volta Energy Technologies4 shared
Ecosystem Integrity Fund4 shared
Impact Science Ventures3 shared
ArcTern Ventures3 shared
Chrysalix Venture Capital3 shared
Good Growth Capital3 shared
Japan Energy Fund3 shared
Fine Structure Ventures2 shared
Senator Investment Group2 shared
Orion Infrastructure Capital2 shared
Engine Ventures1 shared
ABB Ventures1 shared
Clean Energy Ventures1 shared
MCJ1 shared
Chevron Technology Ventures1 shared
Piedmont Capital Investments1 shared
Asymmetry Ventures1 shared
Entrada Ventures1 shared
Zeon Ventures1 shared
Translink Capital1 shared
Last updated: 9 September 2026