--- title: "27 Series B Climate Tech Investors in the US (Nov 2026)" last_updated: "2026-11-05" rows: "27" free_rows: "13" source: "SEC Form D filings and our own research" canonical: "https://theinvestordatabase.com/lists/series-b-climate-tech-investors-us/" --- # 27 Series B climate tech investors in the US We list 27 Series B climate tech investors in the US as of November 2026: 25 have an SEC filing on file and 2 were checked on the firm's own website or an official register, and the list was last checked on 5 Nov 2026. The cities with the most head offices on this list are San Francisco (3), New York (3) and Chicago (3). - 27 investors - 19 with a fund filing or dated deal in the last 12 months - $77M median fund size on file (SEC Form D, 21 firms) - 187 named decision-makers on file ## First 13 of 27 Series B climate tech investors in the US | Investor | Type | HQ | Stages (our research) | Focus (our research) | Latest fund or deal | Fund size | Checked | Profile | |---|---|---|---|---|---|---|---|---| | Energy Impact Partners | VC firm | United States (London office) | Seed, Series A, Series B, Growth | Climate Tech, Energy, 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 | Climate Tech, AI, Healthtech, Energy | New fund, Oct 2026 | $160M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/bison-ventures/ | | Greycroft | VC firm | New York, NY | Series A, Series B, Growth | Climate Tech, AI, Industrial Tech, Defense Tech | New deal, Oct 2026 | $600M (SEC Form D, 2022) | 2026-11-04 | https://theinvestordatabase.com/investors/greycroft/ | | G2 Venture Partners | VC firm | Portola Valley, CA | Series B, Growth | Climate Tech, AI, Industrial Tech, Mobility | New deal, Aug 2026 | $53M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/g2-venture-partners/ | | Energize Ventures | VC firm | Chicago, IL | Series A, Series B, Growth, Any stage | Climate Tech, Energy, AI, Industrial Tech | New deal, Sep 2026 | $328M (SEC Form D, 2020) | 2026-11-05 | https://theinvestordatabase.com/investors/energize-ventures/ | | Autotech Ventures | VC firm | Menlo Park, CA | Pre-seed, Seed, Series A, Series B | Climate Tech, Mobility, AI, Logistics | New fund, Aug 2026 | $25M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/third-mind/ | | Overlap Holdings | VC firm | Hicksville, NY | Seed, Series A, Series B | Climate Tech, AI, Energy, Healthtech | New fund, Oct 2026 | $16M (SEC Form D, 2023) | 2026-11-04 | https://theinvestordatabase.com/investors/overlap-holdings/ | | How Women Invest | VC firm | Oakland, CA | Pre-seed, Seed, Series A, Series B | Climate Tech, Healthtech, AI, B2B | New fund, Sep 2026 | $12M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/how-women-invest/ | | New System Ventures | VC firm | New York, NY | Pre-seed, Seed, Series A, Series B | Climate Tech, Energy, Fintech, Industrial Tech | New deal, Aug 2026 | $30M (SEC Form D, 2023) | 2026-11-04 | https://theinvestordatabase.com/investors/new-system-ventures/ | | Westly Capital Partners | VC firm | Menlo Park, CA | Pre-seed, Seed, Series A, Series B, Growth | Climate Tech, AI, Energy, Industrial Tech | New fund, May 2026 | $500M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/westly-capital-partners/ | | Earthshot Ventures | VC firm | San Francisco, CA | Pre-seed, Seed, Series A, Series B | Climate Tech, AI, Energy, Industrial Tech | New fund, Oct 2026 | $77M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/earthshot-ventures/ | | Atlas Ventures | VC firm | Chicago, IL | Seed, Series A, Series B | Climate Tech, Logistics, AI, Cybersecurity | New fund, Sep 2026 | $23M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/atlas-ventures/ | | Claritas Signal Partners | VC firm | Nashville, TN | Seed, Series A, Series B, Growth | Climate Tech, Healthtech, AI, Media | New deal, Aug 2026 | $14M (SEC Form D, 2021) | 2026-11-05 | https://theinvestordatabase.com/investors/claritas-signal-partners/ | You are seeing 13 of 27. The full list adds 14 more investors and 187 named decision-makers. Get all 27 investors and 187 named contacts, $49, one-time: https://theinvestordatabase.com/buy/list/series-b-climate-tech-investors-us This page: https://theinvestordatabase.com/lists/series-b-climate-tech-investors-us/ ## Method and limits - Source: 25 of the 27 rows carry an SEC filing (Form D or Form ADV). All 27 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 climate tech 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 B. - 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 B 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 27 rows: stage 27, sector 27, fund size 26, website 27. In the paid file: named decision-makers on 27 rows, firm email on 12, LinkedIn page on 22, check size on 7. ## Questions ### How many Series B climate tech investors in the US are there? We list 27 as of November 2026. 19 of the 27 have a fund filing or a dated deal in the last 12 months. The cities with the most are San Francisco (3), New York (3) and Chicago (3). ### Which Series B climate tech investors in the US raised a new fund in the last 12 months? 14 of the 27 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 B climate tech investors in the US? The median fund size on file for this list is $77M, across the 21 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 6 do not disclose a size there. ### How do I contact Series B climate tech investors in the US? The paid file holds 187 named decision-makers across 27 of these 27 and a firm email for 12. 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 B climate tech investors in the US come from? 25 of the 27 rows have an SEC filing on file (Form D or Form ADV) and 2 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 5 Nov 2026 at the latest. The whole file is re-verified twice a year.