122+ Funded Climate Tech & Clean Energy Startups — 81 Companies

Climate tech is tied with Biotech as the fifth-largest vertical in our 2025-2026 dataset, with 81 funded companies raising a combined $1.5B at a $4M median. The low median reflects a concentration of early-stage activity — many climate companies are at the seed or pre-revenue stage, proving technology before scaling. The US leads with 45 of 81 companies, while the UK (6) anchors European climate investment. At Series A, 21 climate tech companies raised $816M at a $14M median, with nuclear energy startups (small modular reactors, advanced fusion) and carbon capture companies commanding the largest individual rounds. Software-defined energy management platforms are emerging as a high-growth category, helping buildings, utilities, and industrial facilities optimize consumption. EU regulations mandating carbon reporting have created a boom in climate compliance and measurement tools. For GTM teams, climate tech companies are increasingly tech-forward and receptive to modern software sales approaches. Target VP of Operations, CTO, and sustainability officers. While the $1.5B aggregate is modest compared to AI ($22.6B) or FinTech ($39.2B), the deal count (81 companies) means substantial volume for SDRs building pipeline.