Spain wastes 11% of its solar energy because the grid is unable to absorb it.
62% confidence
EnvironmentSpain
Omissions
The 11% figure is a peak monthly curtailment rate (July 2025), not a general or annual share; the same reporting notes it fell to about 7% in August 2025 and was 3% in July 2024.
The 11% is measured against TOTAL RENEWABLE generation, not solar generation specifically; the claim shifts the metric to solar.
On an annual basis, Spain curtailed about 5,414 GWh of renewables in 2025, a far lower share of yearly generation than 11%.
Solar is nonetheless the technology most affected by curtailment (about 2,633 GWh wasted in summer 2025, ~76% of all curtailed electricity), so the direction of the claim is real.
All sources located are secondary (news/industry media citing grid and market data); the underlying figures come from Red Eléctrica/REE and market analysts such as Aurora Energy Research, whose primary reports were not directly consulted.
Sources
SecondaryEl MundoEn julio, los vertidos rozaron el 11% del total de generación renovable, frente al 3% del mismo mes de 2024. En agosto bajaron hasta el 7%...
Secondarypv-magazine SpainDurante el verano se registraron episodios con tasas de vertido de hasta el 11%.
SecondaryEl Periódico de la EnergíaUnos 2.633 GWh de solar se ha desperdiciado durante este verano, lo que representa casi el 76% de toda la electricidad vertida.
SecondaryEnergeliaEspaña acumula más de 500 horas con precios negativos en 2026 y vertió 5.414 GWh renovables en 2025.
SecondaryABCSi el comportamiento vuelve a ser similar a agosto de 2025, donde se sobrepasó el 6% de vertidos, estará por encima de los 400 GWh...
TertiaryPolar Star EnergyEl curtailment en España alcanzó el 11% en julio de 2025: tu planta solar está perdiendo dinero.