Spain’s €9 Billion Grid Fix Misses Fault

The European Commission last week cleared Spain’s €9 billion capacity mechanism, a scheme that will pay power plants to be ready when demand peaks. Madrid had first sent the plan to Brussels in December 2024, but the April 2025 blackout, which cut electricity to 50 million people, gave it political force. The difficulty is that the engineers found a different problem. Spain did not run out of power. Its grid lost control of voltage, the force that keeps electricity flowing safely through the system. Paying for spare megawatts does not fix that.

What the Engineers Actually Found

When Spain’s grid collapsed on 28 April 2025, the country had more than enough generating capacity to meet demand. ENTSO-E, the body that co-ordinates Europe’s electricity grids, set out the failure in a 472-page investigation. Gas plants did not deliver reactive power, the electrical support needed to keep voltage stable, even though they were contractually obliged to provide it. Solar panels, working under rules written for an older power system, could not help manage voltage despite being technically able to do so.

None of ENTSO-E’s 21 recommendations calls for a capacity mechanism. The Clean Air Task Force makes the same point: capacity payments do not buy the voltage-control services that failed. Spain’s new €9 billion scheme makes sure enough generation exists on paper. It does not answer whether the grid can manage that electricity second by second.

Who Gets Paid, Who Gets the Bill

The programme’s €900 million annual cost (El País, Concurrences) will appear on electricity bills as a regulated charge. Government estimates put the cost for a typical household on standard pricing at about 4 euro cents a day. The money goes to generators that win competitive auctions run by Red Eléctrica, Spain’s grid operator.

The established utilities are best placed to benefit. Iberdrola, Naturgy and Endesa made €4.25 billion in the first quarter of 2026, up 27.2% year on year, helped in part by emergency measures after the blackout that prioritised gas generation.

The sharper signal is in the pricing of the service that actually broke down. Gas plants receive €100-200 per unit of voltage-control service delivered. Renewables get about €1. Spain’s energy regulator proposed doubling the renewable rate to €2. The solar industry asked for €50.

Spain Is Not the Only Country Misdiagnosing This

Across Europe, capacity mechanisms have become a familiar answer to a more complicated electricity system. Over the past decade, more than two-thirds of some €87 billion in European capacity payments went to thermal generators, according to Aurora Energy Research. The spending is rising. EU-wide costs now run at €6.5 billion a year, according to ACER, the EU energy regulator, up 40% in a single year.

Germany is designing its own mechanism, where the German New Energy Economy Association estimates costs could reach €340-435 billion by 2050. Auction prices vary by more than tenfold across member states, according to Bruegel. That kind of spread suggests political pressure is doing at least as much work as engineering evidence.

The cheaper fixes are already visible. Spain updated its grid code, the technical rulebook for how power plants connect to the network, in 2025 so renewables could provide voltage control. By April 2026, 14.5 GW had enrolled in the programme, including 6 GW of renewables. Battery storage capacity has grown 589% since the blackout. The market moved without needing a €9 billion shove.

Spain has changed the grid rules to address the engineering failure. It is still spending €9 billion on a political answer. Consumers will pay for both.