---
title: "421 Energy Investors (Nov 2026): Top 10 by Fund Activity"
last_updated: "2026-11-09"
rows: "421"
free_rows: "25"
source: "SEC Form D filings and our own research"
canonical: "https://theinvestordatabase.com/lists/energy-investors/"
---

# 421 energy investors

We list 421 energy investors as of November 2026: 250 have an SEC filing on file and 171 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 (93), New York (43) and Massachusetts (15).

- 421 investors
- 207 with a fund filing or dated deal in the last 12 months
- $75M median fund size on file (SEC Form D, 178 firms)
- 1,870 named decision-makers on file

## First 25 of 421 energy investors

| Investor | Type | HQ | Stages (our research) | Focus (our research) | Latest fund or deal | Fund size | Checked | Profile |
|---|---|---|---|---|---|---|---|---|
| Cathay Innovation | VC firm | Paris, France | Seed, Series A, Series B, Growth, Late stage | Energy, AI, Robotics, Fintech | Portfolio news, Aug 2026 | €2.5B (own site) | 2026-11-07 | https://theinvestordatabase.com/investors/cathay-innovation/ |
| Electric Capital | VC firm | Palo Alto, CA | Pre-seed, Seed, Series A | Energy, Crypto and Web3, AI, Fintech | New fund, Sep 2026 | $532M (SEC Form D, 2021) | 2026-11-04 | https://theinvestordatabase.com/investors/electric-capital/ |
| Aramco Ventures | Corporate VC | Saudi Arabia (London office) | Seed, Series A, Growth, Late stage | Energy, Climate Tech, Industrial Tech, AI | Portfolio news, Sep 2026 | $7.5B (own site) | 2026-11-05 | https://theinvestordatabase.com/investors/aramco-ventures/ |
| Energy Impact Partners | VC firm | United States (London office) | Seed, Series A, Series B, Growth | Energy, Climate Tech, 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 | Energy, AI, Climate Tech, Industrial Tech | Portfolio news, Oct 2026 | $928M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/toyota-ventures/ |
| Adara Ventures | VC firm | Madrid, Spain | Seed, Series A, Growth | Energy, Deep Tech, AI, Cybersecurity | New deal, Oct 2026 | €350M (own site) | 2026-11-07 | https://theinvestordatabase.com/investors/adara-ventures-sgeic-s-a/ |
| Parkwalk Advisors | SEIS/EIS fund | London, United Kingdom | Seed, Series A, Series B, Growth | Energy, Healthtech, AI, Industrial Tech | New fund, Sep 2026 | £500M (own site) | 2026-11-04 | https://theinvestordatabase.com/investors/parkwalk/ |
| Omnes Capital | VC firm | Paris, France | Growth | Energy, Deep Tech, Climate Tech, Space | New deal, Sep 2026 | €650M (own site) | 2026-11-07 | https://theinvestordatabase.com/investors/omnes-capital/ |
| MS+PARTNERS | Fund manager | London, United Kingdom | Growth | Energy, Industrial Tech, Climate Tech, Edtech | New fund, Sep 2026 | €300M (own site) | 2026-11-04 | https://theinvestordatabase.com/investors/ms-partners/ |
| DCVC | VC firm | Palo Alto, CA |  | Energy, Healthtech, AI, Biotech | New fund, Oct 2026 | $800M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/dcvc/ |
| At One Ventures | VC firm | Menlo Park, CA | Seed, Series A | Energy, Climate Tech, Agritech, Industrial Tech | New deal, Sep 2026 | $375M (SEC Form D, 2022) | 2026-11-04 | https://theinvestordatabase.com/investors/at-one-ventures/ |
| Initialized | VC firm | San Francisco, CA | Pre-seed, Seed | Energy, AI, Generalist, Fintech | New fund, Sep 2026 | $520M (SEC Form D, 2021) | 2026-11-04 | https://theinvestordatabase.com/investors/initialized/ |
| ClearSky | VC firm | West Palm Beach, FL | Growth | Energy, AI, Cybersecurity, Climate Tech | New fund, Nov 2026 | $500M (SEC Form D, 2024) | 2026-11-04 | https://theinvestordatabase.com/investors/clearsky/ |
| Linse Capital | VC firm | Reno, NV |  | Energy, Industrial Tech, AI, Defense Tech | New fund, Sep 2026 | $600M (SEC Form D, 2021) | 2026-11-04 | https://theinvestordatabase.com/investors/linse-capital/ |
| Safar Partners | VC firm | Cambridge, MA | Seed | Energy, Healthtech, Industrial Tech, Biotech | New deal, Aug 2026 | $300M (SEC Form D, 2023) | 2026-11-04 | https://theinvestordatabase.com/investors/safar-partners/ |
| Extantia | VC firm | Berlin, Germany | Seed, Series A | Energy, Climate Tech, Industrial Tech, Agritech | New deal, Aug 2026 | €204M (own site) | 2026-11-04 | https://theinvestordatabase.com/investors/extantia/ |
| OpenAI Startup Fund | Corporate VC | San Francisco, CA | Seed | Energy, AI, Healthtech, Legal Tech | New fund, Aug 2026 | $400M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/openai-startup-fund/ |
| Energize Ventures | VC firm | Chicago, IL | Series A, Series B, Growth, Any stage | Energy, AI, Industrial Tech, Climate Tech | New deal, Sep 2026 | $328M (SEC Form D, 2020) | 2026-11-05 | https://theinvestordatabase.com/investors/energize-ventures/ |
| Bison Ventures | VC firm | San Francisco, CA | Pre-seed, Seed, Series A, Series B | Energy, AI, Healthtech, Biotech | New fund, Oct 2026 | $160M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/bison-ventures/ |
| Rubio Impact Ventures | VC firm | Amsterdam, Netherlands | Seed, Series A | Energy, Impact, Climate Tech, Food and Beverage | New fund, Sep 2026 | €226M (own site) | 2026-11-07 | https://theinvestordatabase.com/investors/rubio-fund-management-b-v/ |
| M13 | VC firm | Los Angeles, CA | Seed, Series A | Energy, AI, Healthtech, Ecommerce | New fund, Sep 2026 | $400M (SEC Form D, 2021) | 2026-11-04 | https://theinvestordatabase.com/investors/m13/ |
| New Stack | VC firm | Chicago, IL | Pre-seed, Seed | Energy, AI, Fintech, Healthtech | New fund, Sep 2026 | $125M (SEC Form D, 2024) | 2026-11-04 | https://theinvestordatabase.com/investors/new-stack/ |
| Wave Equity Partners | VC firm | Boston, MA | Growth | Energy, Industrial Tech, Climate Tech, Mobility | New fund, Sep 2026 | $250M (SEC Form D, 2023) | 2026-11-04 | https://theinvestordatabase.com/investors/wave-equity-partners/ |
| Protagonist | VC firm | Bay Harbor Islands, FL | Pre-seed | Energy, AI, Industrial Tech, Semiconductor | New fund, Aug 2026 | $150M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/protagonist/ |
| 8090 Industries | VC firm | New York, NY |  | Energy, Industrial Tech, Defense Tech, AI | New fund, Sep 2026 | $200M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/8090-industries/ |

You are seeing 25 of 421. The full list adds 396 more investors and 1,870 named decision-makers.

Get all 421 investors and 1,870 named contacts, $297, one-time: https://theinvestordatabase.com/buy/bundle
This page: https://theinvestordatabase.com/lists/energy-investors/

## Method and limits
- Source: 250 of the 421 rows carry an SEC filing (Form D or Form ADV). All 421 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 energy 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 (40: within 3 months 40, 6 months 30, 12 months 20, 24 months 10), share of the observed portfolio in this sector (30; 15 when the sector is stated only), size of the fund on file on a log scale (20) and completeness of the public record (10). It is a measure of activity and fit, not of quality or returns.
- Fill rates: Of 421 rows: stage 347, sector 421, fund size 261, website 421. In the paid file: named decision-makers on 383 rows, firm email on 183, LinkedIn page on 245, check size on 86.

## Questions
### How many energy investors are there?
We list 421 as of November 2026. 207 of the 421 have a fund filing or a dated deal in the last 12 months. By region: United States (252), United Kingdom (63) and Europe (103).

### Which energy investors raised a new fund in the last 12 months?
114 of the 421 have a fund filing dated in the last 12 months. The most recent on this list are Reveille (Nov 2026), ClearSky (Nov 2026) and Decisive Point VENTURES (Nov 2026).

### What is the typical fund size of energy investors?
The median fund size on file for this list is $75M, across the 178 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 243 do not disclose a size there.

### Which stage do most energy investors back?
Of the 347 with a stage on file, seed (261), Series A (139) and pre-seed (126). A firm can back more than one stage, and 74 rows have no stage on file yet.

### Where does the data on energy investors come from and how often is it updated?
250 of the 421 rows have an SEC filing on file (Form D or Form ADV) and 171 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.

### Can I download the list of energy investors as a spreadsheet?
Yes. The file holds all 421 rows in Excel and CSV, with 1,870 named decision-makers and 183 firm emails, for $297 one-time as part of Global Bundle. 25 rows are free on this page.