---
title: "458 Seed Climate Tech Investors (Nov 2026)"
last_updated: "2026-11-09"
rows: "458"
free_rows: "25"
source: "SEC Form D filings and our own research"
canonical: "https://theinvestordatabase.com/lists/seed-climate-tech-investors/"
---

# 458 seed climate tech investors

We list 458 seed climate tech investors as of November 2026: 161 have an SEC filing on file and 297 were checked on the firm's own website or an official register, and the list was last checked on 9 Nov 2026. The states with the most are California (66), New York (20) and Massachusetts (13).

- 458 investors
- 200 with a fund filing or dated deal in the last 12 months
- $50M median fund size on file (SEC Form D, 124 firms)
- 1,970 named decision-makers on file

## First 25 of 458 seed climate tech investors

| Investor | Type | HQ | Stages (our research) | Focus (our research) | Latest fund or deal | Fund size | Checked | Profile |
|---|---|---|---|---|---|---|---|---|
| Green Angel Ventures | SEIS/EIS fund | London, United Kingdom | Seed | Climate Tech, Energy, Industrial Tech, Fintech | Portfolio news, Aug 2026 | £60M (own site) | 2026-11-04 | https://theinvestordatabase.com/investors/green-angel-ventures/ |
| 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/ |
| 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/ |
| Aramco Ventures | Corporate VC | Saudi Arabia (London office) | Seed, Series A, Growth, Late stage | Climate Tech, Energy, Industrial Tech, AI | Portfolio news, Sep 2026 | $7.5B (own site) | 2026-11-05 | https://theinvestordatabase.com/investors/aramco-ventures/ |
| Starshot Capital | VC firm | Los Angeles, CA | Seed | Climate Tech, Energy, AI, Mobility | New deal, Jul 2026 | $100M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/starshot-capital/ |
| 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/ |
| 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/ |
| Lowercarbon Capital | VC firm | Jackson, WY | Seed | Climate Tech, Energy, Industrial Tech, Mobility | New fund, Sep 2026 |  | 2026-11-04 | https://theinvestordatabase.com/investors/lowercarbon-capital/ |
| 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/ |
| 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/ |
| 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/ |
| Lichen Ventures | VC firm | Baltimore, MD | Seed | Climate Tech, Industrial Tech, Energy, Biotech | New fund, Jun 2026 | $20M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/lichen-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/ |
| 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/ |
| Reveille | VC firm | New York, NY | Seed | Climate Tech, Defense Tech, Energy, Space | New fund, Nov 2026 | $40M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/reveille/ |
| British Design Fund | SEIS/EIS fund | London, United Kingdom | Seed | Climate Tech, Healthtech, Energy, Industrial Tech | Portfolio news, Oct 2026 |  | 2026-11-04 | https://theinvestordatabase.com/investors/british-design-fund/ |
| Future Ventures | VC firm | Los Altos, CA | Seed | Climate Tech, Healthtech, AI, Biotech | New fund, Oct 2026 | $200M (SEC Form D, 2021) | 2026-11-04 | https://theinvestordatabase.com/investors/future-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/ |
| SISTAFUND | VC firm | Paris, France | Seed | Climate Tech, Deep Tech, Healthtech, AI | Portfolio news, Sep 2026 | €70M (own site) | 2026-11-07 | https://theinvestordatabase.com/investors/sistafund/ |
| Cambridge Angels | Angel network | Cambridge, United Kingdom | Seed | Climate Tech, Healthtech, Biotech, Deep Tech | Portfolio news, Oct 2026 | £400M (own site) | 2026-11-04 | https://theinvestordatabase.com/investors/cambridge-angels/ |
| 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/ |
| Seraphim Space | VC firm | London, United Kingdom | Seed, Series A, Growth | Climate Tech, Space, Mobility, Deep Tech | New fund, Oct 2026 | $1.0B (own site) | 2026-11-04 | https://theinvestordatabase.com/investors/seraphim-space/ |
| Azolla Ventures | VC firm | Cambridge, MA | Seed | Climate Tech, Energy, Industrial Tech, Agritech | New fund, Mar 2026 | $130M (SEC Form D, 2021) | 2026-11-04 | https://theinvestordatabase.com/investors/azolla-ventures/ |
| UVC Partners | VC firm | Garching, Germany | Pre-seed, Seed, Series A | Climate Tech, Deep Tech, Mobility, AI | New deal, Sep 2026 | €800M (own site) | 2026-11-07 | https://theinvestordatabase.com/investors/unternehmertum-venture-capital-partners-gmbh-2/ |
| Elbow Beach | VC firm | London, United Kingdom | Pre-seed, Seed | Climate Tech, Energy, Agritech, Mobility | New deal, Oct 2026 |  | 2026-11-04 | https://theinvestordatabase.com/investors/elbow-beach/ |

You are seeing 25 of 458. The full list adds 433 more investors and 1,970 named decision-makers.

Get all 458 investors and 1,970 named contacts, $297, one-time: https://theinvestordatabase.com/buy/bundle
This page: https://theinvestordatabase.com/lists/seed-climate-tech-investors/

## Method and limits
- Source: 161 of the 458 rows carry an SEC filing (Form D or Form ADV). All 458 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 seed.
- 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), stage focus (15: all of it when seed is the only stage the firm states, split evenly when it states more), size of the fund on file on a log scale (15) and completeness of the public record (10). Stage focus is our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns.
- Fill rates: Of 458 rows: stage 458, sector 458, fund size 240, website 458. In the paid file: named decision-makers on 411 rows, firm email on 235, LinkedIn page on 310, check size on 151.

## Questions
### How many seed climate tech investors are there?
We list 458 as of November 2026. 200 of the 458 have a fund filing or a dated deal in the last 12 months.

### Which seed climate tech investors raised a new fund in the last 12 months?
71 of the 458 have a fund filing dated in the last 12 months. The most recent on this list are Reveille (Nov 2026), Future Ventures (Oct 2026) and Crystal Venture Partners (Oct 2026).

### What is the typical fund size of seed climate tech investors?
The median fund size on file for this list is $50M, across the 124 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 334 do not disclose a size there.

### How do I contact seed climate tech investors?
The paid file holds 1,970 named decision-makers across 411 of these 458 and a firm email for 235. 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 seed climate tech investors come from?
161 of the 458 rows have an SEC filing on file (Form D or Form ADV) and 297 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 9 Nov 2026 at the latest. The whole file is re-verified twice a year.