249 energy venture capital firms in the US
We list 249 energy venture capital firms in the US as of November 2026: 245 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 7 Nov 2026. The cities with the most head offices on this list are New York (39), San Francisco (28) and Palo Alto (10).
Top 10 energy venture capital firms in the US, 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), 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. The same rule orders the whole list; it is repeated in the method box.
Energy Impact Partners
Type: VC firm · HQ: United States (London office) · Stages: Seed, Series A, Series B, Growth · Focus: Energy, Climate Tech, AI, Cybersecurity · Latest activity: Portfolio news, Nov 2026 · Fund size or assets: $4.5B (own site)
Portfolio news dated Nov 2026; $4.5B on file (own site); states energy as a focus; names the US as where it invests; 8 named decision-makers on file.
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; names the US as where it invests.
Safar Partners
Type: VC firm · HQ: Cambridge, MA · Stages: Seed · Focus: Energy, Healthtech, Industrial Tech, Biotech · Latest activity: New deal, Aug 2026 · Fund size on file: $300M (SEC Form D, 2023)
Dated new deal in Aug 2026; $300M fund on file (SEC Form D, 2023); states energy as a focus; names the US as where it invests; 3 named decision-makers on file.
Bison Ventures
Type: VC firm · HQ: San Francisco, CA · Stages: Pre-seed, Seed, Series A, Series B · Focus: Energy, AI, Healthtech, Biotech · Latest activity: New fund, Oct 2026 · Fund size on file: $160M (SEC Form D, 2025)
Latest fund filing dated Oct 2026; $160M fund on file (SEC Form D, 2025); states energy as a focus; names the US as where it invests; 2 named decision-makers on file.
New Stack
Type: VC firm · HQ: Chicago, IL · Stages: Pre-seed, Seed · Focus: Energy, AI, Fintech, Healthtech · Latest activity: New fund, Sep 2026 · Fund size on file: $125M (SEC Form D, 2024)
Latest fund filing dated Sep 2026; $125M fund on file (SEC Form D, 2024); states energy as a focus; names the US as where it invests; 3 named decision-makers on file.
Construct Capital
Type: VC firm · HQ: Washington, DC · Stages: Seed · Focus: Energy, AI, Industrial Tech, Defense Tech · Latest activity: New deal, Aug 2026 · Fund size on file: $150M (SEC Form D, 2026)
Dated new deal in Aug 2026; $150M fund on file (SEC Form D, 2026); states energy as a focus; names the US as where it invests; 6 named decision-makers on file.
Inflection
Type: VC firm · HQ: Framingham, MA · Stages: Pre-seed, Seed · Focus: Energy, AI, Space, Defense Tech · Latest activity: New fund, Sep 2026 · Fund size on file: $50M (SEC Form D, 2026)
Latest fund filing dated Sep 2026; $50M fund on file (SEC Form D, 2026); states energy as a focus; names the US as where it invests; 3 named decision-makers on file.
Building Ventures
Type: VC firm · HQ: Boston, MA · Stages: Seed · Focus: Energy, Proptech, AI, Climate Tech · Latest activity: New deal, Sep 2026 · Fund size on file: $100M (SEC Form D, 2021)
Dated new deal in Sep 2026; $100M fund on file (SEC Form D, 2021); states energy as a focus; names the US as where it invests; 8 named decision-makers on file.
Light Ray Ventures
Type: VC firm · HQ: New York, NY · Stages: Seed · Focus: Energy, Robotics, Industrial Tech, Climate Tech · Latest activity: New deal, Oct 2026 · Fund size on file: $21M (SEC Form D, 2023)
Dated new deal in Oct 2026; $21M fund on file (SEC Form D, 2023); states energy as a focus; names the US as where it invests; 3 named decision-makers on file.
K Street Capital
Type: VC firm · HQ: Richmond, VA · Stages: Seed · Focus: Energy, Fintech, AI, Healthtech · Latest activity: New fund, Sep 2026 · Fund size on file: $20M (SEC Form D, 2026)
Latest fund filing dated Sep 2026; $20M fund on file (SEC Form D, 2026); states energy as a focus; names the US as where it invests; 4 named decision-makers on file.
First 25 of 249 energy venture capital firms in the US
| Investor | Type | HQ | Stagesour research | Focusour research | Latest fund or deal | Fund sizeas filed or stated | Checked | Contacts |
|---|---|---|---|---|---|---|---|---|
| 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 |
| 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 |
| Safar Partners | VC firm | Cambridge, MA | Seed | Energy, Healthtech, Industrial Tech, Biotech | New deal, Aug 2026 | $300M (SEC Form D, 2023) | 4 Nov 2026 | 3 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 |
| New Stack | VC firm | Chicago, IL | Pre-seed, Seed | Energy, AI, Fintech, Healthtech | New fund, Sep 2026 | $125M (SEC Form D, 2024) | 4 Nov 2026 | 3 names · Unlock |
| Construct Capital | VC firm | Washington, DC | Seed | Energy, AI, Industrial Tech, Defense Tech | New deal, Aug 2026 | $150M (SEC Form D, 2026) | 4 Nov 2026 | 6 names · Unlock |
| Inflection | VC firm | Framingham, MA | Pre-seed, Seed | Energy, AI, Space, Defense Tech | New fund, Sep 2026 | $50M (SEC Form D, 2026) | 4 Nov 2026 | 3 names, firm email · Unlock |
| Building Ventures | VC firm | Boston, MA | Seed | Energy, Proptech, AI, Climate Tech | New deal, Sep 2026 | $100M (SEC Form D, 2021) | 5 Nov 2026 | 8 names · Unlock |
| Light Ray Ventures | VC firm | New York, NY | Seed | Energy, Robotics, Industrial Tech, Climate Tech | New deal, Oct 2026 | $21M (SEC Form D, 2023) | 5 Nov 2026 | 3 names, firm email · Unlock |
| K Street Capital | VC firm | Richmond, VA | Seed | Energy, Fintech, AI, Healthtech | New fund, Sep 2026 | $20M (SEC Form D, 2026) | 4 Nov 2026 | 4 names, firm email · Unlock |
| Steel Atlas | VC firm | New York, NY | Energy, AI, Insurtech, Cybersecurity | New fund, Nov 2026 | $50M (SEC Form D, 2025) | 4 Nov 2026 | 2 names · Unlock | |
| Tamarack Global | VC firm | Greenwich, CT | Energy, Defense Tech, AI, Industrial Tech | New fund, Sep 2026 | $50M (SEC Form D, 2025) | 4 Nov 2026 | 5 names · Unlock | |
| Dauntless Ventures | VC firm | Holladay, UT | Energy, Defense Tech, AI, Biotech | New fund, Sep 2026 | $34M (SEC Form D, 2025) | 4 Nov 2026 | 4 names · Unlock | |
| ClearSky | VC firm | West Palm Beach, FL | Growth | Energy, AI, Cybersecurity, Climate Tech | New fund, Nov 2026 | $500M (SEC Form D, 2024) | 4 Nov 2026 | 8 names · Unlock |
| Battery Ventures | VC firm | Boston, MA | Any stage | Energy, Biotech, Future of Work, Data | Portfolio news, Jul 2026 | $3.2B (own site) | 4 Nov 2026 | LinkedIn page · Unlock |
| Hallstone Ventures | VC firm | Hollywood, CA | Seed | Energy, Space, Robotics, Media | New fund, Oct 2026 | $11M (SEC Form D, 2025) | 4 Nov 2026 | 5 names · Unlock |
| Ecosphere Ventures | VC firm | Sugar Land, TX | Pre-seed, Seed | Energy, Climate Tech, Industrial Tech, Defense Tech | New fund, Sep 2026 | $10M (SEC Form D, 2026) | 4 Nov 2026 | 8 names · Unlock |
| Scout Ventures | VC firm | Austin, TX | Seed | Energy, Defense Tech, AI, Deep Tech | New deal, May 2026 | $125M (SEC Form D, 2022) | 4 Nov 2026 | 8 names · Unlock |
| Commonweal Ventures | VC firm | New York, NY | Pre-seed, Seed | Energy, AI, Legal Tech, Fintech | New fund, Jul 2026 | $75M (SEC Form D, 2022) | 4 Nov 2026 | 5 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 |
| Riot Ventures | VC firm | Venice, CA | Energy, AI, Defense Tech, Industrial Tech | New deal, Jul 2026 | $160M (SEC Form D, 2024) | 4 Nov 2026 | 2 names · Unlock | |
| Silent Ventures | VC firm | Dallas, TX | Pre-seed | Energy, Defense Tech, AI, Logistics | New fund, Jul 2026 | $85M (SEC Form D, 2025) | 4 Nov 2026 | 1 name · Unlock |
| VoLo Earth Ventures Impact | VC firm | Snowmass Village, CO | Pre-seed | Energy, Climate Tech, Mobility, Industrial Tech | New deal, Jul 2026 | $100M (SEC Form D, 2021) | 5 Nov 2026 | 7 names · Unlock |
| G2 Venture Partners | VC firm | Portola Valley, CA | Series B, Growth | Energy, AI, Industrial Tech, Mobility | New deal, Aug 2026 | $53M (SEC Form D, 2026) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Techsquare Ventures | VC firm | Atlanta, GA | Pre-seed, Seed, Series A | Energy, AI, Data, Cybersecurity | New fund, May 2026 | $49M (SEC Form D, 2025) | 4 Nov 2026 | 8 names, firm email · Unlock |
You are seeing 25 of 249. The full list adds 224 more firms and 1,210 named decision-makers.
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How these 249 break down
By US state
| US state | On this list | Share |
|---|---|---|
| California | 93 | 37% |
| New York | 43 | 17% |
| Massachusetts | 15 | 6% |
| Colorado | 12 | 5% |
| Florida | 11 | 4% |
| Texas | 10 | 4% |
| Illinois | 6 | 2% |
| Washington | 5 | 2% |
| Connecticut | 4 | 2% |
| Virginia | 3 | 1% |
By stage
| Stage | On this list | Share |
|---|---|---|
| Pre-Seed | 72 | 29% |
| Seed | 139 | 56% |
| Series A | 60 | 24% |
| Series B | 29 | 12% |
| Growth | 42 | 17% |
Stage is our research. A firm can back more than one stage.
Full lists, each with its own row count: Pre-seed energy investors in the US (73)Seed energy investors in the US (140)Series A energy investors in the US (60)Series B energy investors in the US (29)Growth-stage energy investors in the US (42)
By type
| Type | On this list | Share |
|---|---|---|
| VC firm | 244 | 98% |
| Corporate VC | 4 | 2% |
Method and limits
- Source
- 245 of the 249 rows carry an SEC filing (Form D or Form ADV). All 249 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. This list holds VC firms, fund managers and corporate venture arms; accelerators and angel networks are in their own lists. Sector: the firm states energy as a focus on its own site, or we observed it in the firm's portfolio.
- 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), 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.
- Last refreshed
- November 2026. Rows on this list were checked between 4 Nov 2026 and 7 Nov 2026.
- Fill rates
- Of 249 rows: stage 193, sector 249, fund size 214, website 249. In the paid file: named decision-makers on 238 rows, firm email on 85, LinkedIn page on 126, check size on 17.
- Corrections
- Email hello@theinvestordatabase.com or use the update form. We act within 5 working days.
Questions
How many energy venture capital firms in the US are there?
We list 249 as of November 2026. 141 of the 249 have a fund filing or a dated deal in the last 12 months. The cities with the most are New York (39), San Francisco (28) and Palo Alto (10).
Which energy venture capital firms in the US raised a new fund in the last 12 months?
110 of the 249 have a fund filing dated in the last 12 months. The most recent on this list are Reveille (Nov 2026), Steel Atlas (Nov 2026) and ClearSky (Nov 2026).
What is the typical fund size of energy venture capital firms in the US?
The median fund size on file for this list is $75M, across the 174 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 75 do not disclose a size there.
Which stage do most energy venture capital firms in the US back?
Of the 193 with a stage on file, seed (139), pre-seed (72) and Series A (60). A firm can back more than one stage, and 56 rows have no stage on file yet.
Where does the data on energy venture capital firms in the US come from and how often is it updated?
245 of the 249 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 7 Nov 2026 at the latest. The whole file is re-verified twice a year.
Can I download the list of energy venture capital firms in the US as a spreadsheet?
Yes. The file holds all 249 rows in Excel and CSV, with 1,210 named decision-makers and 85 firm emails, for $49 one-time. 25 rows are free on this page.
Narrower lists
Seed energy investors in the US (140)Energy investors in California (93)Pre-seed energy investors in the US (73)Energy investors in the San Francisco Bay Area (69)Series A energy investors in the US (60)Energy investors in New York (43)Growth-stage energy investors in the US (42)Series B energy investors in the US (29)Energy investors in Silicon Valley (27)Energy investors in Massachusetts (15)
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