139 Series A energy investors
We list 139 Series A energy investors as of November 2026: 59 have an SEC filing on file and 80 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 (19), New York (9) and Colorado (6).
Top 5 Series A energy investors, ranked by recent fund activity
Among firms with a published profile and a dated fund or deal in the last 24 months. The rule: 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 Series A 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. The same rule orders the whole list; it is repeated in the method box.
Toyota Ventures
Type: Corporate VC · HQ: Los Altos, CA · Stages: Seed, Series A · Focus: Energy, AI, Climate Tech, Industrial Tech · Latest activity: Portfolio news, Oct 2026 · Private fund assets: $928M (SEC Form ADV)
Portfolio news dated Oct 2026; $928M on file (SEC Form ADV); states energy as a focus; backs seed, Series A.
At One Ventures
Type: VC firm · HQ: Menlo Park, CA · Stages: Seed, Series A · Focus: Energy, Climate Tech, Agritech, Industrial Tech · Latest activity: New deal, Sep 2026 · Fund size on file: $375M (SEC Form D, 2022)
Dated new deal in Sep 2026; $375M fund on file (SEC Form D, 2022); states energy as a focus; backs seed, Series A; 8 named decision-makers on file.
Extantia
Type: VC firm · HQ: Berlin, Germany · Stages: Seed, Series A · Focus: Energy, Climate Tech, Industrial Tech, Agritech · Latest activity: New deal, Aug 2026 · Fund size or assets: €204M (own site)
Dated new deal in Aug 2026; €204M on file (own site); states energy as a focus; backs seed, Series A; 8 named decision-makers on file.
Electric Capital
Type: VC firm · HQ: Palo Alto, CA · Stages: Pre-seed, Seed, Series A · Focus: Energy, Crypto and Web3, AI, Fintech · Latest activity: New fund, Sep 2026 · Fund size on file: $532M (SEC Form D, 2021)
Latest fund filing dated Sep 2026; $532M fund on file (SEC Form D, 2021); states energy as a focus; backs pre-seed, seed, Series A; 8 named decision-makers on file.
Rubio Impact Ventures
Type: VC firm · HQ: Amsterdam, Netherlands · Stages: Seed, Series A · Focus: Energy, Impact, Climate Tech, Food and Beverage · Latest activity: New fund, Sep 2026 · Fund size or assets: €226M (own site)
Latest fund filing dated Sep 2026; €226M on file (own site); states energy as a focus; backs seed, Series A.
First 25 of 139 Series A energy investors
| Investor | Type | HQ | Stagesour research | Focusour research | Latest fund or deal | Fund sizeas filed or stated | Checked | Contacts |
|---|---|---|---|---|---|---|---|---|
| Toyota Ventures | Corporate VC | Los Altos, CA | Seed, Series A | Energy, AI, Climate Tech, Industrial Tech | Portfolio news, Oct 2026 | $928M (SEC Form ADV) | 5 Nov 2026 | LinkedIn page · Unlock |
| 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) | 4 Nov 2026 | 8 names · Unlock |
| Extantia | VC firm | Berlin, Germany | Seed, Series A | Energy, Climate Tech, Industrial Tech, Agritech | New deal, Aug 2026 | €204M (own site) | 4 Nov 2026 | 8 names, firm email · Unlock |
| 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) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Rubio Impact Ventures | VC firm | Amsterdam, Netherlands | Seed, Series A | Energy, Impact, Climate Tech, Food and Beverage | New fund, Sep 2026 | €226M (own site) | 7 Nov 2026 | firm email · Unlock |
| Adara Ventures | VC firm | Madrid, Spain | Seed, Series A, Growth | Energy, Deep Tech, AI, Cybersecurity | New deal, Oct 2026 | €350M (own site) | 7 Nov 2026 | 5 names, firm email · Unlock |
| M13 | VC firm | Los Angeles, CA | Seed, Series A | Energy, AI, Healthtech, Ecommerce | New fund, Sep 2026 | $400M (SEC Form D, 2021) | 4 Nov 2026 | 8 names · Unlock |
| 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) | 7 Nov 2026 | 5 names, firm email · Unlock |
| 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) | 5 Nov 2026 | 8 names · Unlock |
| 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) | 5 Nov 2026 | 8 names · Unlock |
| 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) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Aurelia Foundry | VC firm | Denver, CO | Seed, Series A | Energy, Space, Mobility, Climate Tech | New fund, Oct 2026 | $75M (SEC Form D, 2023) | 4 Nov 2026 | 5 names, firm email · Unlock |
| 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) | 4 Nov 2026 | 2 names, firm email · Unlock |
| First Imagine! | VC firm | London, United Kingdom | Series A | Energy, AI, Industrial Tech, Climate Tech | New deal, Oct 2026 | 5 Nov 2026 | 8 names, firm email · Unlock | |
| 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) | 5 Nov 2026 | 8 names · Unlock |
| Earthshot Ventures | VC firm | San Francisco, CA | Pre-seed, Seed, Series A, Series B | Energy, AI, Industrial Tech, Proptech | New fund, Oct 2026 | $77M (SEC Form D, 2026) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Longrun Capital | VC firm | San Francisco, CA | Seed, Series A | Energy, Climate Tech, Industrial Tech, AI | New deal, Sep 2026 | $22M (SEC Form D, 2026) | 4 Nov 2026 | 4 names · Unlock |
| Infinite | VC firm | West Palm Beach, FL | Pre-seed, Seed, Series A, Series B, Growth | Energy, AI, Deep Tech, Crypto and Web3 | New fund, Oct 2026 | $100M (SEC Form D, 2026) | 5 Nov 2026 | 6 names · Unlock |
| Clean Energy Ventures | VC firm | Boston, MA | Seed, Series A | Energy, Climate Tech, Fintech, Deep Tech | New deal, May 2026 | $306M (SEC Form D, 2022) | 5 Nov 2026 | 8 names, firm email · Unlock |
| Overlap Holdings | VC firm | Hicksville, NY | Seed, Series A, Series B | Energy, AI, Climate Tech, Healthtech | New fund, Oct 2026 | $16M (SEC Form D, 2023) | 4 Nov 2026 | 8 names · Unlock |
| Blackhorn Ventures | VC firm | Denver, CO | Seed, Series A | Energy, AI, Developer Tools, Industrial Tech | New deal, Jul 2026 | $250M (SEC Form D, 2022) | 4 Nov 2026 | 8 names · Unlock |
| Cherry Ventures | VC firm | London, United Kingdom | Pre-seed, Seed, Series A | Energy, Generalist, AI, SaaS | New deal, Sep 2026 | $5M (SEC Form D, 2025) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Union Square Ventures | VC firm | New York, NY | Seed, Series A | Energy, AI, Generalist, Robotics | New deal, Oct 2026 | $3M (SEC Form D, 2026) | 4 Nov 2026 | 8 names · Unlock |
| Emerald Technology Ventures | VC firm | Zurich, Switzerland | Series A, Growth | Energy, Climate Tech, Deep Tech, AI | New deal, Jun 2026 | €100M (own site) | 7 Nov 2026 | 4 names, firm email · Unlock |
| Westly Capital Partners | VC firm | Menlo Park, CA | Pre-seed, Seed, Series A, Series B, Growth | Energy, AI, Industrial Tech, Cybersecurity | New fund, May 2026 | $500M (SEC Form D, 2026) | 4 Nov 2026 | 8 names · Unlock |
You are seeing 25 of 139. The full list adds 114 more investors and 644 named decision-makers.
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How these 139 break down
By region
| Region | On this list | Share |
|---|---|---|
| United States | 60 | 43% |
| United Kingdom | 20 | 14% |
| Europe | 56 | 40% |
By US state
| US state | On this list | Share |
|---|---|---|
| California | 19 | 14% |
| New York | 9 | 6% |
| Colorado | 6 | 4% |
| Massachusetts | 3 | 2% |
| Illinois | 2 | 1% |
| Florida | 2 | 1% |
| Tennessee | 2 | 1% |
By European country
| European country | On this list | Share |
|---|---|---|
| France | 17 | 12% |
| Netherlands | 13 | 9% |
| Germany | 5 | 4% |
| Norway | 5 | 4% |
| Spain | 4 | 3% |
| Austria | 3 | 2% |
| Italy | 2 | 1% |
By type
| Type | On this list | Share |
|---|---|---|
| VC firm | 101 | 73% |
| Corporate VC | 14 | 10% |
| Government or university fund | 13 | 9% |
| Fund manager | 6 | 4% |
| Accelerator | 2 | 1% |
Method and limits
- Source
- 59 of the 139 rows carry an SEC filing (Form D or Form ADV). All 139 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. Stage: the firm states that it invests at Series A.
- Order
- Firms with a published profile come first. 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 Series A 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.
- Last refreshed
- November 2026. Rows on this list were checked between 4 Nov 2026 and 9 Nov 2026.
- Fill rates
- Of 139 rows: stage 139, sector 139, fund size 76, website 139. In the paid file: named decision-makers on 124 rows, firm email on 75, LinkedIn page on 94, check size on 43.
- Corrections
- Email [email protected] or use the update form. We act within 5 working days.
Questions
How many Series A energy investors are there?
We list 139 as of November 2026. 73 of the 139 have a fund filing or a dated deal in the last 12 months.
Which Series A energy investors raised a new fund in the last 12 months?
25 of the 139 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 energy investors?
The median fund size on file for this list is $75M, across the 45 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 94 do not disclose a size there.
How do I contact Series A energy investors?
The paid file holds 644 named decision-makers across 124 of these 139 and a firm email for 75. 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 energy investors come from?
59 of the 139 rows have an SEC filing on file (Form D or Form ADV) and 80 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.
Broader lists
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