Top 10 European Green Tech Companies 2026

Danish state-backed energy company that transformed from fossil fuels into the world's largest offshore wind developer, operating over 16 GW of offshore capacity. Revenue was DKK 77B (~$11B) in 2025. Orsted's portfolio spans Europe, the US, and Asia-Pacific.

Swedish EV battery manufacturer founded in 2016, aiming to build Europe's largest lithium-ion battery gigafactory in Skelleftea. Despite financial challenges in 2025, Northvolt secured restructuring and holds supply agreements with BMW, Volkswagen, and Scania worth over $55B.

Spanish-German wind turbine group (majority-owned by Siemens Energy) with 140+ GW of installed capacity globally and 28,000 employees. The company is the leading European supplier of offshore turbines, with flagship 14 MW+ models deployed across the North Sea.

Italian utility subsidiary of Enel Group and one of the world's largest renewable energy operators, with 63 GW of installed capacity across 30+ countries. Enel Green Power generated 118 TWh of clean electricity in 2025, covering solar, wind, hydro, and geothermal sources.

Israeli-founded solar inverter and energy optimization leader with its European operations headquartered in Germany, serving residential and commercial installers across the EU. In 2025, SolarEdge managed over 4.5 million connected systems with 470,000 MW of monitored capacity.

Norwegian clean battery company building gigafactories powered by 100% renewable hydroelectric energy. Founded in 2018, Freyr is targeting 200+ GWh of annual production capacity by 2030 and has secured partnerships with Koch Strategic Platforms and Glencore for materials supply.

Swiss direct air capture (DAC) pioneer operating the world's largest carbon removal plant, Mammoth, in Iceland, with capacity to remove 36,000 tonnes of CO2 per year. Founded in 2009, Climeworks has raised over $800M and counts Microsoft and Stripe among its carbon removal customers.

German green hydrogen electrolyzer manufacturer founded in 2010, producing high-temperature solid oxide and alkaline electrolyzers for industrial decarbonization. Sunfire secured a EUR 215M Series E in 2023 and counts Paul Wurth, Fertiberia, and Salzgitter among its industrial partners.

US-founded but European supply chain-focused biomass energy company supplying compressed wood pellets to EU power stations replacing coal. Enviva operates 10+ production plants and ships 6.5+ million metric tons annually, serving major utilities in the UK, Denmark, and Japan.

Danish state-backed energy company that transformed from fossil fuels into the world's largest offshore wind developer, operating over 16 GW of offshore capacity. Revenue was DKK 77B (~$11B) in 2025. Orsted's portfolio spans Europe, the US, and Asia-Pacific.

Swedish EV battery manufacturer founded in 2016, aiming to build Europe's largest lithium-ion battery gigafactory in Skelleftea. Despite financial challenges in 2025, Northvolt secured restructuring and holds supply agreements with BMW, Volkswagen, and Scania worth over $55B.

Spanish-German wind turbine group (majority-owned by Siemens Energy) with 140+ GW of installed capacity globally and 28,000 employees. The company is the leading European supplier of offshore turbines, with flagship 14 MW+ models deployed across the North Sea.

Italian utility subsidiary of Enel Group and one of the world's largest renewable energy operators, with 63 GW of installed capacity across 30+ countries. Enel Green Power generated 118 TWh of clean electricity in 2025, covering solar, wind, hydro, and geothermal sources.

Israeli-founded solar inverter and energy optimization leader with its European operations headquartered in Germany, serving residential and commercial installers across the EU. In 2025, SolarEdge managed over 4.5 million connected systems with 470,000 MW of monitored capacity.

Norwegian clean battery company building gigafactories powered by 100% renewable hydroelectric energy. Founded in 2018, Freyr is targeting 200+ GWh of annual production capacity by 2030 and has secured partnerships with Koch Strategic Platforms and Glencore for materials supply.

Swiss direct air capture (DAC) pioneer operating the world's largest carbon removal plant, Mammoth, in Iceland, with capacity to remove 36,000 tonnes of CO2 per year. Founded in 2009, Climeworks has raised over $800M and counts Microsoft and Stripe among its carbon removal customers.

German green hydrogen electrolyzer manufacturer founded in 2010, producing high-temperature solid oxide and alkaline electrolyzers for industrial decarbonization. Sunfire secured a EUR 215M Series E in 2023 and counts Paul Wurth, Fertiberia, and Salzgitter among its industrial partners.

US-founded but European supply chain-focused biomass energy company supplying compressed wood pellets to EU power stations replacing coal. Enviva operates 10+ production plants and ships 6.5+ million metric tons annually, serving major utilities in the UK, Denmark, and Japan.