Most Active Climate Investors in London 2026

10 firms writing Climate checks in London, led by Business Growth Fund, Western Technology Investment.

Climate in London accounts for 4 tracked companies with verified cap-table data, 4 of which disclose round sizes totalling $159M. The median disclosed raise is $35M, and the largest is Fuse Energy at $100M, ahead of Notpla ($35M) and Tem-Energy ($17M).

The names that recur most often on these climate cap tables are Balderton Capital (1 company), Lowercarbon Capital (1 company), Lakestar (1 company), Accel (1 company), Creandum (1 company), Ribbit Capital (1 company). By latest disclosed round, the market skews Seed (2), Series A (2).

Best funded Climate in London companies

  1. Fuse Energy — $100M (latest: Seed)
  2. Notpla — $35M (latest: Series A)
  3. Tem-Energy — $17M (latest: Series A)
  4. Newcleo — $6.8M (latest: Seed)

Sector × city funding reports (20)

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•By Alejandro Cremades