Spain's negative-price hours hit 397 in Q1, near all of 2025's total
Wholesale power prices in Spain turned negative for 397 hours in the first quarter, up from 48 hours a year earlier and closing in on the 555 hours recorded across the whole of 2025, according to pv magazine.
The sharpest single stretch hit -EUR 58.60/MWh over the 12:00 to 12:45 CET window on February 21, with solar output at 15.6 GW against demand of 24.6 GW, according to pv magazine.
José Donoso, director general of the Spanish PV association UNEF, said the market is out of step with the current generation mix. "We have a pricing system that is ill-suited to a scenario of high renewable penetration and low demand," Donoso told pv magazine.
Granted demand connection capacity stands near 43 GW, while average system demand sits close to 35 GW, according to pv magazine. UNEF puts the timeline for new electricity-intensive demand to fully materialize at three to five years.
Generators also carry a fixed tax load. The IVPEE, set at 7% of electricity generation revenue, dates to 2013 and was designed to chip away at the power system's accumulated tariff deficit, according to pv magazine.
The February 21 episode shows the pressure on midday output: solar of 15.6 GW fed into demand that reached only 24.6 GW, pushing prices below zero, according to pv magazine. Donoso ties the recurring negative hours to a pricing framework that does not fit high renewable supply and thin demand, a mismatch UNEF expects to persist until new load arrives over its three-to-five-year window.
Source: pv-magazine.com (opens in a new tab)1 sourcePermalink