Solar capture rates halved while the storage spread widened
Solar earned 43% to 50% of the baseload price in Spain, Germany and Greece in the 2026 energy-crisis window, against 85% to 91% in 2022.
https://www.pv-magazine.com/2026/10/14/europes-second-energy-crisis-largely-skipped-the-solar-hours/
The same analysis shows why. Night-time day-ahead prices rose by €36 to €51/MWh versus 2025, while midday prices moved between -€4 and +€14/MWh. Spain recorded 547 negative-price hours in the window, and 19% to 23% of solar output across the three markets was produced at negative prices.
The value moved into the spread. The average-day storage spread in Spain widened to about €131/MWh from €88/MWh in 2025, before losses.
From a developer’s seat, this changes the work before it changes the asset.
Layout, inverter loading and grid-capacity sizing become decisions about which hours a project sells into, not only how many MWh it produces.
For SPV buyers and sellers, a solar-only case and a co-located BESS case should be underwritten as different assets, each with its own capture-rate assumption.
These are averages for a defined 2026 window, not a forecast.
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