---
title: "60 Series A Energy Investors in the US (Nov 2026)"
last_updated: "2026-11-07"
rows: "60"
free_rows: "25"
source: "SEC Form D filings and our own research"
canonical: "https://theinvestordatabase.com/lists/series-a-energy-investors-us/"
---

# 60 Series A energy investors in the US

We list 60 Series A energy investors in the US as of November 2026: 57 have an SEC filing on file and 3 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 (8), San Francisco (7) and Denver (5).

- 60 investors
- 34 with a fund filing or dated deal in the last 12 months
- $77M median fund size on file (SEC Form D, 43 firms)
- 342 named decision-makers on file

## First 25 of 60 Series A energy investors in the US

| Investor | Type | HQ | Stages (our research) | Focus (our research) | Latest fund or deal | Fund size | Checked | Profile |
|---|---|---|---|---|---|---|---|---|
| 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/ |
| 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/ |
| 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/ |
| Union Square Ventures | VC firm | New York, NY | Seed, Series A | Energy, AI, Generalist, Robotics | New deal, Oct 2026 | $3M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/union-square-ventures/ |
| Techsquare Ventures | VC firm | Atlanta, GA | Pre-seed, Seed, Series A | Energy, AI, Data, Cybersecurity | New fund, May 2026 | $49M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/techsquare-ventures/ |
| Massive VC | VC firm | Boulder, CO | Seed, Series A, Series B | Energy, Space, AI, Cybersecurity | New fund, May 2026 | $30M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/massive-vc/ |
| 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/ |
| Great Wave Ventures | VC firm | New York, NY | Pre-seed, Seed, Series A | Energy, AI, Proptech, Climate Tech | New fund, May 2026 | $31M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/great-wave-ventures/ |
| 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/ |
| 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/ |
| Aurelia Foundry | VC firm | Denver, CO | Seed, Series A | Energy, Space, Mobility, Climate Tech | New fund, Oct 2026 | $75M (SEC Form D, 2023) | 2026-11-04 | https://theinvestordatabase.com/investors/aurelia-foundry/ |
| Tareyton | VC firm | Durham, NC | Pre-seed, Seed, Series A | Energy, AI, Industrial Tech, Mobility | New fund, Jul 2026 | $5M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/tareyton/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/westly-capital-partners/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/longrun-capital/ |
| 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/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/earthshot-ventures/ |
| 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) | 2026-11-05 | https://theinvestordatabase.com/investors/infinite/ |
| 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) | 2026-11-05 | https://theinvestordatabase.com/investors/clean-energy-ventures/ |
| Cerberus Ventures | VC firm | New York, NY | Pre-seed, Seed, Series A, Series B | Energy, AI, Industrial Tech, Quantum | New fund, Jun 2026 | $75M (SEC Form D, 2024) | 2026-11-04 | https://theinvestordatabase.com/investors/cerberus-ventures/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/overlap-holdings/ |
| Blackhorn Ventures | VC firm | Denver, CO | Seed, Series A | Energy, AI, Developer Tools, Industrial Tech | New deal, Jul 2026 | $250M (SEC Form D, 2022) | 2026-11-04 | https://theinvestordatabase.com/investors/blackhorn-ventures/ |
| Buoyant Ventures | VC firm | Beachwood, OH | Seed, Series A | Energy, AI, Climate Tech, Data | New deal, Jun 2025 | $100M (SEC Form D, 2021) | 2026-11-05 | https://theinvestordatabase.com/investors/buoyant-ventures/ |
| TitletownTech | VC firm | Green Bay, WI | Seed, Series A | Energy, AI, Healthtech, Industrial Tech | New deal, Oct 2025 | $80M (SEC Form D, 2022) | 2026-11-05 | https://theinvestordatabase.com/investors/titletowntech/ |
| Crosscut | VC firm | Santa Monica, CA | Seed, Series A | Energy, AI, Govtech, Climate Tech | New fund, Nov 2025 | $75M (SEC Form D, 2024) | 2026-11-04 | https://theinvestordatabase.com/investors/crosscut/ |
| B Capital | VC firm | Manhattan Beach, CA | Seed, Series A, Series B, Growth | Energy, AI, Fintech, Healthtech | New fund, Jul 2025 | $307M (SEC Form D, 2023) | 2026-11-04 | https://theinvestordatabase.com/investors/b-capital/ |

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

Get all 60 investors and 342 named contacts, $49, one-time: https://theinvestordatabase.com/buy/list/series-a-energy-investors-us
This page: https://theinvestordatabase.com/lists/series-a-energy-investors-us/

## Method and limits
- Source: 57 of the 60 rows carry an SEC filing (Form D or Form ADV). All 60 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: 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.
- Fill rates: Of 60 rows: stage 60, sector 60, fund size 53, website 60. In the paid file: named decision-makers on 57 rows, firm email on 25, LinkedIn page on 38, check size on 7.

## Questions
### How many Series A energy investors in the US are there?
We list 60 as of November 2026. 34 of the 60 have a fund filing or a dated deal in the last 12 months. The cities with the most are New York (8), San Francisco (7) and Denver (5).

### Which Series A energy investors in the US raised a new fund in the last 12 months?
24 of the 60 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 in the US?
The median fund size on file for this list is $77M, across the 43 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 17 do not disclose a size there.

### How do I contact Series A energy investors in the US?
The paid file holds 342 named decision-makers across 57 of these 60 and a firm email for 25. 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 in the US come from?
57 of the 60 rows have an SEC filing on file (Form D or Form ADV) and 3 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.