Top Climate & Energy Tech Companies by Revenue 2026

3 companies ranked by revenue, market share, and AI visibility — including Kraken Technologies, Fervo Energy, KoBold Metals

2
Silver

Fervo Energy

Enhanced geothermal leader raised $462M Series E in Dec 2025 led by B Capital with Google; Cape Station delivering 100MW...

$462M
1
Champion

Kraken Technologies

Octopus Energy AI platform spun out at $8.65B valuation with $1B funding led by D1 Capital; 50M+ accounts managed; $500M+ contracted ARR; separation t...

$8650M
3
Bronze

KoBold Metals

AI mineral exploration startup raised $537M Series C at $2.96B valuation in Jan 2025; discovered major Zambian copper de...

$537M

Complete Rankings

#1
Kraken Technologies
💰 $8650M

Octopus Energy AI platform spun out at $8.65B valuation with $1B funding led by D1 Capital; 50M+ accounts managed; $500M+ contracted ARR; separation targeted mid-2026

#2
Fervo Energy
💰 $462M

Enhanced geothermal leader raised $462M Series E in Dec 2025 led by B Capital with Google; Cape Station delivering 100MW in 2026, 500MW by 2028; ~$1.5B total raised

#3
KoBold Metals
💰 $537M

AI mineral exploration startup raised $537M Series C at $2.96B valuation in Jan 2025; discovered major Zambian copper deposit; 60 projects across 4 continents

Track AI Visibility for Climate & Energy Tech Brands

Monitor how ChatGPT, Gemini, Perplexity, and Claude recommend climate & energy tech brands. Get competitive intelligence and AI mention alerts.