---
title: "60 Series A Climate Tech Investors in the US (Nov 2026)"
last_updated: "2026-11-06"
rows: "60"
free_rows: "25"
source: "SEC Form D filings and our own research"
canonical: "https://theinvestordatabase.com/lists/series-a-climate-tech-investors-us/"
---

# 60 Series A climate tech investors in the US

We list 60 Series A climate tech investors in the US as of November 2026: 58 have an SEC filing on file and 2 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 San Francisco (8), New York (6) and Menlo Park (5).

- 60 investors
- 37 with a fund filing or dated deal in the last 12 months
- $78M median fund size on file (SEC Form D, 44 firms)
- 358 named decision-makers on file

## First 25 of 60 Series A climate tech investors in the US

| Investor | Type | HQ | Stages (our research) | Focus (our research) | Latest fund or deal | Fund size | Checked | Profile |
|---|---|---|---|---|---|---|---|---|
| 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/ |
| 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/ |
| 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/ |
| 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/ |
| 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/ |
| 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/ |
| 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/ |
| 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/ |
| Clean Energy Ventures | VC firm | Boston, MA | Seed, Series A | Climate Tech, Energy, Fintech, Deep Tech | New deal, May 2026 | $306M (SEC Form D, 2022) | 2026-11-05 | https://theinvestordatabase.com/investors/clean-energy-ventures/ |
| Blackhorn Ventures | VC firm | Denver, CO | Seed, Series A | Climate Tech, AI, Energy, Developer Tools | New deal, Jul 2026 | $250M (SEC Form D, 2022) | 2026-11-04 | https://theinvestordatabase.com/investors/blackhorn-ventures/ |
| Autotech Ventures | VC firm | Menlo Park, CA | Pre-seed, Seed, Series A, Series B | Climate Tech, Mobility, AI, Logistics | New fund, Aug 2026 | $25M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/third-mind/ |
| Buoyant Ventures | VC firm | Beachwood, OH | Seed, Series A | Climate Tech, AI, Energy, Data | New deal, Jun 2025 | $100M (SEC Form D, 2021) | 2026-11-05 | https://theinvestordatabase.com/investors/buoyant-ventures/ |
| Overlap Holdings | VC firm | Hicksville, NY | Seed, Series A, Series B | Climate Tech, AI, Energy, Healthtech | New fund, Oct 2026 | $16M (SEC Form D, 2023) | 2026-11-04 | https://theinvestordatabase.com/investors/overlap-holdings/ |
| How Women Invest | VC firm | Oakland, CA | Pre-seed, Seed, Series A, Series B | Climate Tech, Healthtech, AI, B2B | New fund, Sep 2026 | $12M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/how-women-invest/ |
| M13 | VC firm | Los Angeles, CA | Seed, Series A | Climate Tech, AI, Healthtech, Ecommerce | New fund, Sep 2026 | $400M (SEC Form D, 2021) | 2026-11-04 | https://theinvestordatabase.com/investors/m13/ |
| Great Wave Ventures | VC firm | New York, NY | Pre-seed, Seed, Series A | Climate Tech, AI, Proptech, Robotics | New fund, May 2026 | $31M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/great-wave-ventures/ |
| Techsquare Ventures | VC firm | Atlanta, GA | Pre-seed, Seed, Series A | Climate Tech, AI, Data, Cybersecurity | New fund, May 2026 | $49M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/techsquare-ventures/ |
| New System Ventures | VC firm | New York, NY | Pre-seed, Seed, Series A, Series B | Climate Tech, Energy, Fintech, Industrial Tech | New deal, Aug 2026 | $30M (SEC Form D, 2023) | 2026-11-04 | https://theinvestordatabase.com/investors/new-system-ventures/ |
| Westly Capital Partners | VC firm | Menlo Park, CA | Pre-seed, Seed, Series A, Series B, Growth | Climate Tech, AI, Energy, Industrial Tech | New fund, May 2026 | $500M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/westly-capital-partners/ |
| Crosscut | VC firm | Santa Monica, CA | Seed, Series A | Climate Tech, Energy, AI, Govtech | New fund, Nov 2025 | $75M (SEC Form D, 2024) | 2026-11-04 | https://theinvestordatabase.com/investors/crosscut/ |
| Earthshot Ventures | VC firm | San Francisco, CA | Pre-seed, Seed, Series A, Series B | Climate Tech, AI, Energy, Industrial Tech | New fund, Oct 2026 | $77M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/earthshot-ventures/ |
| Atlas Ventures | VC firm | Chicago, IL | Seed, Series A, Series B | Climate Tech, Logistics, AI, Cybersecurity | New fund, Sep 2026 | $23M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/atlas-ventures/ |
| Claritas Signal Partners | VC firm | Nashville, TN | Seed, Series A, Series B, Growth | Climate Tech, Healthtech, AI, Media | New deal, Aug 2026 | $14M (SEC Form D, 2021) | 2026-11-05 | https://theinvestordatabase.com/investors/claritas-signal-partners/ |
| Voyager Capital | VC firm | Seattle, WA | Seed, Series A | Climate Tech, AI, Agritech, B2B | New deal, Apr 2026 | $300M (SEC Form D, 2024) | 2026-11-05 | https://theinvestordatabase.com/investors/voyager-capital/ |

You are seeing 25 of 60. The full list adds 35 more investors and 358 named decision-makers.

Get all 60 investors and 358 named contacts, $49, one-time: https://theinvestordatabase.com/buy/list/series-a-climate-tech-investors-us
This page: https://theinvestordatabase.com/lists/series-a-climate-tech-investors-us/

## Method and limits
- Source: 58 of the 60 rows carry an SEC filing (Form D or Form ADV). All 60 have a website we checked. 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. Sector: the firm states climate tech as a focus on its own site, or we observed it in the firm's portfolio. Stage: the firm states that it invests at Series A.
- Order: Activity score out of 100: recency of the latest fund filing or dated deal (30: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (20; half of that when the sector is stated only), stage focus (15: all of it when Series A is the only stage the firm states, split evenly when it states more), 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 (12) and completeness of the public record (8). Stage and regional focus are our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns.
- Fill rates: Of 60 rows: stage 60, sector 60, fund size 56, website 60. In the paid file: named decision-makers on 58 rows, firm email on 22, LinkedIn page on 42, check size on 10.

## Questions
### How many Series A climate tech investors in the US are there?
We list 60 as of November 2026. 37 of the 60 have a fund filing or a dated deal in the last 12 months. The cities with the most are San Francisco (8), New York (6) and Menlo Park (5).

### Which Series A climate tech investors in the US raised a new fund in the last 12 months?
22 of the 60 have a fund filing dated in the last 12 months. The most recent on this list are Bison Ventures (Oct 2026), Overlap Holdings (Oct 2026) and Earthshot Ventures (Oct 2026).

### What is the typical fund size of Series A climate tech investors in the US?
The median fund size on file for this list is $78M, across the 44 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 16 do not disclose a size there.

### How do I contact Series A climate tech investors in the US?
The paid file holds 358 named decision-makers across 58 of these 60 and a firm email for 22. We publish the address a firm lists itself, never a personal email. Each free row links to a profile with the firm's website.

### Where does the data on Series A climate tech investors in the US come from?
58 of the 60 rows have an SEC filing on file (Form D or Form ADV) and 2 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.