Spain’s Solar Surge Adds 13.8 GW in 2025, Shielding Consumers from Gas Spikes

Context A year ago, a blackout swept across Spain and Portugal, halting transit, communications, and fuel supplies. Investigations later ruled out renewable inertia as a cause, pointing instead to grid‑voltage governance failures. Despite blame on renewables, the country has accelerated its shift away from fossil fuels.

Key Facts Spain installed 13.8 GW of new solar capacity in 2025, up from 12.3 GW in 2024. Chris Rosslowe, senior energy analyst for Europe at Ember, said Spain’s “trajectory towards reducing fossil power and increasing renewables and their enablers has strengthened since the blackout.” Jan Rosenow, professor of energy and climate policy at the University of Oxford, noted that without recent wind and solar growth, wholesale electricity prices in the first half of 2024 would have been 40 % higher.

What It Means The added solar capacity lowers reliance on gas‑fired generation, which has become more expensive after regional supply shocks. Spain’s average power price in March 2025 was €43 per MWh, the third lowest in Europe, illustrating how renewables buffer consumers. Continued growth in solar and wind, coupled with emerging voltage‑control services from renewables, helps keep prices stable even as gas markets tighten.

What to watch next Monitor the rollout of battery storage projects and grid‑voltage reforms that allow renewables to provide stabilizing services, as well as EU gas price trends that could test Spain’s renewable shield.