Top 10 Seed Investors in CleanTech
| Rank | Investor Name |
|---|---|
| 1 | SOSV |
| 2 | Climate Capital |
| 3 | HAX |
| 4 | IndieBio |
| 5 | Azolla Ventures |
| 6 | ImpactAssets |
| 7 | Alumni Ventures |
| 8 | City Light Capital |
| 9 | Plug and Play Tech Center |
| 10 | Front Row Ventures |
Seed activity in this category runs heavily through the accelerator ecosystem and the funds that follow its cohorts. Decarbonization mandates and industrial climate technology drive the category, with impact capital prominent at early stages. For a company raising at this stage, these are the highest-velocity check writers in the category, and the accelerator and syndicate paths are often the most direct way to reach them.
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Rankings cover January 2025 to July 2026 investment activity in US and Canada companies. Seed and early-stage rankings measure deal participation, not suitability for every raise.