---
title: "256 Climate Tech Venture Capital Firms in the US (Nov 2026)"
last_updated: "2026-11-06"
rows: "256"
free_rows: "25"
source: "SEC Form D filings and our own research"
canonical: "https://theinvestordatabase.com/lists/climate-tech-investors-us/"
---

# 256 climate tech venture capital firms in the US

We list 256 climate tech venture capital firms in the US as of November 2026: 252 have an SEC filing on file and 4 were checked on the firm's own website or an official register, and the list was last checked on 6 Nov 2026. The cities with the most head offices on this list are New York (30), San Francisco (27) and Boston (12).

- 256 firms
- 146 with a fund filing or dated deal in the last 12 months
- $75M median fund size on file (SEC Form D, 186 firms)
- 1,303 named decision-makers on file

## First 25 of 256 climate tech venture capital firms in the US

| Investor | Type | HQ | Stages (our research) | Focus (our research) | Latest fund or deal | Fund size | Checked | Profile |
|---|---|---|---|---|---|---|---|---|
| SOSV | VC firm | United States | Pre-seed | Climate Tech, Deep Tech, Healthtech, Biotech | Portfolio news, Nov 2026 | $131M (SEC Form D, 2022) | 2026-11-04 | https://theinvestordatabase.com/investors/sosv/ |
| Energy Impact Partners | VC firm | United States (London office) | Seed, Series A, Series B, Growth | Climate Tech, Energy, AI, Cybersecurity | Portfolio news, Nov 2026 | $4.5B (own site) | 2026-11-05 | https://theinvestordatabase.com/investors/energy-impact-partners/ |
| Toyota Ventures | Corporate VC | Los Altos, CA | Seed, Series A | Climate Tech, AI, Energy, Industrial Tech | Portfolio news, Oct 2026 | $928M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/toyota-ventures/ |
| Redbud VC | VC firm | Columbia, MO | Pre-seed | Climate Tech, Healthtech, Agritech, AI | New fund, Sep 2026 | $25M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/redbud-vc/ |
| ClearSky | VC firm | West Palm Beach, FL | Growth | Climate Tech, AI, Energy, Cybersecurity | New fund, Nov 2026 | $500M (SEC Form D, 2024) | 2026-11-04 | https://theinvestordatabase.com/investors/clearsky/ |
| Battery Ventures | VC firm | Boston, MA | Any stage | Climate Tech, Energy, Biotech, Future of Work | Portfolio news, Jul 2026 | $3.2B (own site) | 2026-11-04 | https://theinvestordatabase.com/investors/battery-ventures/ |
| Khosla Ventures | VC firm | Menlo Park, CA | Pre-seed, Seed, Series A, Growth | Climate Tech, AI, Consumer, B2B | New fund, Aug 2026 | $1.9B (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/khosla-ventures/ |
| Ecosphere Ventures | VC firm | Sugar Land, TX | Pre-seed, Seed | Climate Tech, Energy, Industrial Tech, Defense Tech | New fund, Sep 2026 | $10M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/ecosphere-ventures/ |
| VoLo Earth Ventures Impact | VC firm | Snowmass Village, CO | Pre-seed | Climate Tech, Energy, Mobility, Industrial Tech | New deal, Jul 2026 | $100M (SEC Form D, 2021) | 2026-11-05 | https://theinvestordatabase.com/investors/volo-earth-ventures-impact/ |
| DBL Investors | VC firm | San Francisco, CA |  | Climate Tech, AI, Industrial Tech, Impact | Portfolio news, Nov 2026 | $673M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/dbl-investors/ |
| At One Ventures | VC firm | Menlo Park, CA | Seed, Series A | Climate Tech, Agritech, Industrial Tech, AI | New deal, Sep 2026 | $375M (SEC Form D, 2022) | 2026-11-04 | https://theinvestordatabase.com/investors/at-one-ventures/ |
| Bison Ventures | VC firm | San Francisco, CA | Pre-seed, Seed, Series A, Series B | Climate Tech, AI, Healthtech, Energy | New fund, Oct 2026 | $160M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/bison-ventures/ |
| Building Ventures | VC firm | Boston, MA | Seed | Climate Tech, Proptech, AI, Energy | New deal, Sep 2026 | $100M (SEC Form D, 2021) | 2026-11-05 | https://theinvestordatabase.com/investors/building-ventures/ |
| Energize Ventures | VC firm | Chicago, IL | Series A, Series B, Growth, Any stage | Climate Tech, Energy, AI, Industrial Tech | New deal, Sep 2026 | $328M (SEC Form D, 2020) | 2026-11-05 | https://theinvestordatabase.com/investors/energize-ventures/ |
| Light Ray Ventures | VC firm | New York, NY | Seed | Climate Tech, Robotics, Industrial Tech, Energy | New deal, Oct 2026 | $21M (SEC Form D, 2023) | 2026-11-05 | https://theinvestordatabase.com/investors/light-ray-ventures/ |
| Wave Equity Partners | VC firm | Boston, MA | Growth | Climate Tech, Energy, Industrial Tech, Mobility | New fund, Sep 2026 | $250M (SEC Form D, 2023) | 2026-11-04 | https://theinvestordatabase.com/investors/wave-equity-partners/ |
| Greycroft | VC firm | New York, NY | Series A, Series B, Growth | Climate Tech, AI, Industrial Tech, Defense Tech | New deal, Oct 2026 | $600M (SEC Form D, 2022) | 2026-11-04 | https://theinvestordatabase.com/investors/greycroft/ |
| LMNT Ventures | VC firm | Mercer Island, WA | Seed | Climate Tech, Proptech, Robotics, Mobility | New fund, Sep 2026 | $80M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/lmnt-ventures/ |
| Safar Partners | VC firm | Cambridge, MA | Seed | Climate Tech, Healthtech, Industrial Tech, Biotech | New deal, Aug 2026 | $300M (SEC Form D, 2023) | 2026-11-04 | https://theinvestordatabase.com/investors/safar-partners/ |
| Hallstone Ventures | VC firm | Hollywood, CA | Seed | Climate Tech, Space, Robotics, Media | New fund, Oct 2026 | $11M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/hallstone-ventures/ |
| First Bight Ventures | VC firm | Houston, TX | Seed, Series A | Climate Tech, Healthtech, Biotech, Industrial Tech | New fund, Mar 2026 | $80M (SEC Form D, 2022) | 2026-11-04 | https://theinvestordatabase.com/investors/first-bight-ventures/ |
| K Street Capital | VC firm | Richmond, VA | Seed | Climate Tech, Fintech, AI, Energy | New fund, Sep 2026 | $20M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/k-street-capital/ |
| Longrun Capital | VC firm | San Francisco, CA | Seed, Series A | Climate Tech, Industrial Tech, AI, Energy | New deal, Sep 2026 | $22M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/longrun-capital/ |
| Echo River Capital | VC firm | Belvedere Tiburon, CA | Seed | Climate Tech, Industrial Tech, Agritech, Impact | New fund, Aug 2026 | $30M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/echo-river-capital/ |
| Galileo Ventures | VC firm | San Francisco, CA | Pre-seed, Seed | Climate Tech, AI, Deep Tech, Robotics | New fund, Aug 2026 | $100M (SEC Form D, 2023) | 2026-11-05 | https://theinvestordatabase.com/investors/galileo-ventures/ |

You are seeing 25 of 256. The full list adds 231 more firms and 1,303 named decision-makers.

Get all 256 firms and 1,303 named contacts, $49, one-time: https://theinvestordatabase.com/buy/list/climate-tech-investors-us
This page: https://theinvestordatabase.com/lists/climate-tech-investors-us/

## Method and limits
- Source: 252 of the 256 rows carry an SEC filing (Form D or Form ADV). 254 of the 256 have a website we checked; the other 2 rest on the filing or register entry alone. Filing date and fund size are SEC data where a filing exists. Stage, sector and check size are our research.
- Inclusion rule: Organizations that back startups. Individuals, buyout funds and firms we found to be inactive are left out. This list holds VC firms, fund managers and corporate venture arms; accelerators and angel networks are in their own lists. Sector: the firm states climate tech as a focus on its own site, or we observed it in the firm's portfolio.
- Order: Activity score out of 100: recency of the latest fund filing or dated deal (35: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (25; half of that when the sector is stated only), stated focus on the US (15: full marks when the firm names the US as where it invests, half when it says global), size of the fund on file on a log scale (15) and completeness of the public record (10). Regional focus is our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns.
- Fill rates: Of 256 rows: stage 196, sector 256, fund size 233, website 254. In the paid file: named decision-makers on 250 rows, firm email on 88, LinkedIn page on 142, check size on 20.

## Questions
### How many climate tech venture capital firms in the US are there?
We list 256 as of November 2026. 146 of the 256 have a fund filing or a dated deal in the last 12 months. The cities with the most are New York (30), San Francisco (27) and Boston (12).

### Which climate tech venture capital firms in the US raised a new fund in the last 12 months?
98 of the 256 have a fund filing dated in the last 12 months. The most recent on this list are Reveille (Nov 2026), ClearSky (Nov 2026) and Future Ventures (Oct 2026).

### What is the typical fund size of climate tech venture capital firms in the US?
The median fund size on file for this list is $75M, across the 186 firms with a size on an SEC Form D. The fund on file is each firm's main fund, which is not always its newest. The other 70 do not disclose a size there.

### Which stage do most climate tech venture capital firms in the US back?
Of the 196 with a stage on file, seed (159), pre-seed (82) and Series A (59). A firm can back more than one stage, and 60 rows have no stage on file yet.

### Where does the data on climate tech venture capital firms in the US come from and how often is it updated?
252 of the 256 rows have an SEC filing on file (Form D or Form ADV) and 4 were checked on the firm's own website or an official register. Filing date and fund size come from the filing. Stage, sector and check size are our research. Rows on this list were last checked on 6 Nov 2026 at the latest. The whole file is re-verified twice a year.

### Can I download the list of climate tech venture capital firms in the US as a spreadsheet?
Yes. The file holds all 256 rows in Excel and CSV, with 1,303 named decision-makers and 88 firm emails, for $49 one-time. 25 rows are free on this page.