Spain Energy Secretary Defends SRAD Activations as Routine Grid Management
Spain's energy secretary rejected supply-security concerns after Red Electrica activated the SRAD demand-response mechanism multiple times this summer.
Spain's energy secretary said on Tuesday (2026-09-15) that repeated activations of the SRAD demand-response mechanism this summer were "not a canary in the mine" for the power system's supply security, dismissing market concern about the frequency of industrial curtailments, Montel reported.4
The statement came after Red Electrica activated SRAD for the second time in August on Thursday (2026-08-20), calling 832 MW of curtailment at 18:03 CET, equivalent to 2.3% of mainland Spain's consumption of 35,864 MW at that hour, TSO data showed. Two activations in a single month raised questions from heavy industrial consumers about the reliability of their power supply.3
The official position is that SRAD is a balancing tool, not an emergency backstop. Demand response schemes are designed to manage instantaneous frequency stability. Spain's energy mix has shifted rapidly enough that calls on SRAD have become more frequent, and the difference between "working as designed" and "needed more than before" matters to the industrial operators receiving curtailment notices.4
Wind and solar now account for more than 40% of Spain's total electricity supply. The Bank of Spain estimated that the wholesale electricity price in 2024 was 40% lower than it would have been had the energy matrix remained unchanged from 2019 — a substantial benefit delivered by a decade of aggressive renewables investment. Nuclear supplied 19% of generation in 2024, providing baseload continuity as variable output scaled up. Spain operates without meaningful domestic oil or gas production; the transition has sharply reduced a fuel-import dependency that historically exposed the country to commodity price swings.2
But for energy-intensive consumers, wholesale prices are not the only variable. The costs of ancillary services, the charges paid to keep the grid balanced, rose "brutally" in February and March 2026 and were likely to persist at elevated levels, market observers told Montel in May. Those charges fall disproportionately on large industrial users. High ancillary costs can eat into the lower wholesale bills that renewables have delivered, making the competitiveness argument for heavy industry less straightforward than the headline price data suggest.1
SRAD exists to manage exactly this kind of pressure. When supply and demand diverge faster than generation can respond, cutting industrial demand buys time for the grid to stabilise. The secretary's argument is that using the mechanism confirms the system is functioning as intended.4,3
Each activation still has a cost. The 832 MW curtailed on Thursday (2026-08-20) represents demand that large industrial sites did not draw from the grid during that window. For high-throughput manufacturers, curtailment during peak summer hours carries direct operating costs. Some operators plan around expected activations; others treat each call as an unwelcome variable in their energy planning.3
What is unresolved is how the activation frequency evolves through autumn. Solar output drops as Spain moves into October and November, which typically eases the grid-management pressure most acute in summer. If SRAD continues to be called at a similar rate through the lower-generation months, the picture the secretary presented on Tuesday (2026-09-15) will face harder scrutiny. Ancillary costs were already elevated through much of 2026; another cluster of Q4 activations would sharpen pressure from industrial groups that have tracked these charges since the February 2026 surge.4,1