Spain’s wind lags solar: what the IEA review means for developers
Solar was more than 90% of new renewable capacity in Spain in 2025, while wind added just 1.2 GW, according to the IEA’s “Spain 2026” review (Energías Renovables, 9 Nov 2026).
https://www.energias-renovables.com/eolica/la-aie-pide-acelerar-la-e-lica-20261109
For a developer, that imbalance shows up directly in the revenue line.
A pipeline concentrated in solar sells into the same hours. The IEA warns this raises curtailment and compresses producers’ revenues.
Wind diversifies that profile, but the IEA counts about 40 GW in pre-construction or early development, many stalled by permits and environmental assessments. The wind association AEE says it would take about 5.8 GW a year to reach the 2030 target. The constraint is rarely the resource. It is the time between a measured site and a consented one.
Three things we put first when we develop wind:
Start wind-resource measurement (lidar or met mast) early, so energy-yield assumptions are bankable when the permit lands.
Design wind, solar and storage together from the outset, not storage as an afterthought.
Run environmental and grid-access sequencing as one workplan, not two.
For buyers, a consented wind asset with a measured resource is scarcer than a solar one. That scarcity belongs in how a sale process is run.
Where is the longest delay for wind in Iberia today: permitting, grid access, or court appeals?
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