How wind power grew in Spain
Spain began a national wind research programme in 1979 and opened a test site at Tarifa in 1982. Its first wind farm, at Garriguella in Girona, was inaugurated on 9 April 1984 with five 24 kW turbines. Commercial scale came at Tarifa in 1993, when Eólica del Sur (20 MW) and Eólica del Estrecho (10 MW) began operating.
A decree of 2007 let onshore wind take a fixed 7.3228 euro cents/kWh for 20 years. A 2013 reform repealed those tariffs and gave existing plants a set return tied to state bond yields. New support then came through auctions. The May 2017 auction awarded 2,980 MW of wind, for plants due to run by the end of 2019. Iberdrola, Acciona Energía, Endesa-Enel Green Power, Naturgy and EDPR are the largest developers. The main turbine suppliers in the fleet are Siemens Gamesa, GE Vernova, Vestas, Nordex-Acciona and Enercon.
Red Eléctrica counted 32,593 MW of wind on the mainland grid at the end of 2025. Wind generated 58,801 GWh in 2025, 21.6% of Spain's generation, and was the largest source for the third year running. Some 9.77 GW is over 20 years old, and a further 46 repowering projects cover 1,132 MW. In Galicia, 3.4 GW has building consent but is mostly held up by court appeals. Across Spain, 32.5 GW of wind was in the permitting process at the end of 2025.
Sources: Renewable Energy Magazine · Energías Renovables · BOE · BOE · Renewable Energy Magazine · Energías Renovables · Red Eléctrica · Energías Renovables
Where Spain's power comes from, 2025
| Source | Share of electricity |
|---|---|
| Solar | 21.9% |
| Gas | 21.6% |
| Wind | 20.4% |
| Nuclear | 18.8% |
| Hydro | 11.4% |
| Other fossil fuels | 3.5% |
| Bioenergy | 2.2% |
| Coal | 0.3% |
Wind farms in Spain
We track 1,543 wind farms in Spain: 31.6 GW operating and 56.5 GW under construction, consented or planned, with 19.0 GW of it offshore. Each one's owners, turbines and status are in the Wind app.
Electricity data: Ember yearly electricity data (CC BY 4.0). Wind farms: national registers and Global Energy Monitor; see data sources.
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