60 Series A energy investors in the US

Top 5 Series A energy investors 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 (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. The same rule orders the whole list; it is repeated in the method box.

1. 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; names the US as where it invests.

2. 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; backs seed, Series A, Series B; names the US as where it invests; 8 named decision-makers on file.

3. 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; backs pre-seed, seed, Series A; names the US as where it invests; 2 named decision-makers on file.

4. Union Square Ventures

   Type: VC firm · HQ: New York, NY · Stages: Seed, Series A · Focus: Energy, AI, Generalist, Robotics · Latest activity: New deal, Oct 2026 · Fund size on file: $3M (SEC Form D, 2026)

   Dated new deal in Oct 2026; $3M fund on file (SEC Form D, 2026); states energy as a focus; backs seed, Series A; names the US as where it invests; 8 named decision-makers on file.

5. Techsquare Ventures

   Type: VC firm · HQ: Atlanta, GA · Stages: Pre-seed, Seed, Series A · Focus: Energy, AI, Data, Cybersecurity · Latest activity: New fund, May 2026 · Fund size on file: $49M (SEC Form D, 2025)

   Latest fund filing dated May 2026; $49M fund on file (SEC Form D, 2025); states energy as a focus; backs pre-seed, seed, Series A; names the US as where it invests; 8 named decision-makers on file.

First 25 of 60 Series A energy investors in the US

You are seeing 25 of 60. The full list adds 35 more investors and 342 named decision-makers.

How these 60 break down

Questions

Not sure this is the right list? Describe your raise in the investor matching tool and get a shortlist. The link opens it set to energy, Series A and the US. Guide: how many investors to pitch. Markdown version of this page.