Value Add VC has tracked 29 Climate & Energy venture rounds in 2026 totaling $8.5B, including 4 rounds ($543M) in Q4 2026. Ranked below: the biggest rounds, the companies that raised the most in 2026 and the ones with the highest reported valuations, and the most active lead investors.
Energy, climate, nuclear, battery and materials startups. Private companies only; rounds tracked by Value Add VC, not a market total.
Methodology
Rounds tracked by Value Add VC from filings, wire releases and news outlets — not a total for the whole market or a complete list of every Climate & Energy company. Data window: 2026 year-to-date for the biggest rounds, the companies that raised the most, and lead-investor rankings. Companies by valuation show each company's latest reported valuation (since mid-2025) — an older figure is left off rather than shown as current.
Ranked by dollar amount (rounds, companies by funding), by latest reported figure (companies by valuation), and by number of tracked deals led (investors). Public companies, debt, fund closes, acquisitions and unverified/rumored rounds are excluded.
Last updated 2026-10-14. Missing a company or round? Submit it →
| # | Date | Company | Stage | Amount | Led by | Source |
|---|---|---|---|---|---|---|
| 1 | Oct 8, 2026 | Voltus | Series D | $225M | Generation Investment Management | Latitude Media |
| 2 | Oct 6, 2026 | Type One Energy | Series B | $200M | Breakthrough Energy Ventures | TechCrunch |
| 3 | Oct 10, 2026 | VEIR | Series C | $110M | Matter Venture Partners | Pulse 2.0 |
| 4 | Oct 13, 2026 | NEU Battery Materials | Undisclosed | $7.6M | — | Pulse2.com |
| # | Company | 2026 tracked funding | Tracked rounds | Latest round |
|---|---|---|---|---|
| 1 | Joulent | $1.8B | 1 | Jul 1, 2026 |
| 2 | Valar Atomics | $1.4B | 2 | Aug 3, 2026 |
| 3 | Base Power | $1.0B | 1 | Aug 3, 2026 |
| 4 | Commonwealth Fusion Systems | $1.0B | 1 | Jul 30, 2026 |
| 5 | Form Energy | $750M | 1 | Aug 12, 2026 |
| 6 | Antora Energy | $550M | 1 | Jul 30, 2026 |
| 7 | Antares | $370M | 1 | Jul 27, 2026 |
| 8 | Sila | $300M | 1 | Jul 21, 2026 |
| 9 | Voltus | $225M | 1 | Oct 8, 2026 |
| 10 | Type One Energy | $200M | 1 | Oct 6, 2026 |
| 11 | Quaise Energy | $180M | 1 | Jul 7, 2026 |
| 12 | Mazama Energy | $135M | 1 | Sep 17, 2026 |
| 13 | VEIR | $110M | 1 | Oct 10, 2026 |
| 14 | Rainmaker | $100M | 1 | Sep 21, 2026 |
| 15 | Kairos Power | $70M | 1 | Sep 21, 2026 |
| # | Company | Valuation | As of | Source |
|---|---|---|---|---|
| 1 | Base Power | $13B (Aug 2026) | 2026-08 | no source link |
| 2 | Valar Atomics | $6B (Aug 2026) | 2026-08 | no source link |
| 3 | Joulent | ~$5B | 2026-07-01 | Business Wire |
| # | Date | Company | Stage | Amount | Led by | Source |
|---|---|---|---|---|---|---|
| 1 | Oct 13, 2026 | NEU Battery Materials | Undisclosed | $7.6M | — | Pulse2.com |
| 2 | Oct 10, 2026 | VEIR | Series C | $110M | Matter Venture Partners | Pulse 2.0 |
| 3 | Oct 8, 2026 | Voltus | Series D | $225M | Generation Investment Management | Latitude Media |
| 4 | Oct 6, 2026 | Type One Energy | Series B | $200M | Breakthrough Energy Ventures | TechCrunch |
| 5 | Sep 21, 2026 | Kairos Power | Undisclosed | $70M | Samsung C&T | TechCrunch |
| 6 | Sep 21, 2026 | Rainmaker | Series B | $100M | Upfront Ventures, DCVC, Lowercarbon Capital | PR Newswire |
| 7 | Sep 17, 2026 | Evolution Metals & Technologies | Undisclosed | $22M | — | SEC EDGAR Form D |
| 8 | Sep 17, 2026 | Mazama Energy | Series B | $135M | — | TechCrunch |