The Spanish electricity grid has once again found itself at the center of a crisis after several emergency activations to prevent another widespread collapse. The system operator, Red Eléctrica, has been forced to cut off power to industry four times this summer, a figure not seen since the 90s and reflecting the fragile balance between generation and demand. The situation is exacerbated by the extreme heat, which drives up air conditioning use and reduces the efficiency of photovoltaic plants.
Economic data only confirms that the system is nearing its limit. Operational services and the so-called "reinforced mode" have driven up consumer costs, while electricity prices show no signs of slowing. Faced with this situation, the government has approved millions of euros to equip the grid with new stabilization technologies, and different regions of the country are preparing for the modernization of their electrical infrastructure.
Cuts to industry and exorbitant costs
Last Tuesday, Red Eléctrica was forced to interrupt power supply to large companies in order to maintain service to households. This was the fourth time in 2026 that the Active Demand Response Service (SRAD) was activated, a mechanism that allows factories to reduce their energy consumption in exchange for financial compensation. On this occasion, the price reached a record high: €211 per megawatt-hour , when the theoretical cost of a combined cycle power plant is around €183-€185. This tool, designed as a "safety valve," had never been used so frequently, highlighting the system's limited capacity.
The costs associated with these measures have skyrocketed. According to a report published by electricity companies and major industries, system operation services totaled nearly €3.360 billion in the first half of August , 36% more than last year. The implementation of a "reinforced mode" following the April 28 blackout requires Red Eléctrica to operate more gas-fired power plants than usual, increasing costs and sending "distorted" price signals. Industry associations warn that this additional cost is passed on to consumers and reduces the economy's competitiveness.
Investments to protect the system
To avoid another blackout, the government approved a €615 million investment in Red Eléctrica on August 3rd. These funds will be used to purchase synchronous compensators (e-STATCOM) and reactors , equipment that helps stabilize voltage against fluctuations in renewable energy production. In addition, the government has approved extending the operating life of the Almaraz nuclear power plant until 2030, a measure the sector considers necessary to provide the grid with the support of synchronous technology.
Meanwhile, improvements are underway at various locations across the country. In Murcia, the company is constructing a new 220 kV ring line, with an investment of €55,3 million , which will connect the Espinardo, Murcia, and El Palmar substations. 4,55 kilometers of the pipeline have already been opened to traffic, and the final opening of several sections is expected before the Murcia Fair. In Rincón de la Victoria (Málaga), six projects are being carried out with a budget of €341.147 to upgrade the network, bury cables, and increase capacity.
The photovoltaic transition and its challenges
The energy crisis has highlighted the need to rethink the role of renewables. At the 12th Solar Forum, the sector called for progress in energy storage and voltage control regulations. The recent approval of procedure PO 7.4 will allow photovoltaics and other renewables to contribute to grid stability , something that was not previously permitted. Furthermore, there is a push for interconnections and a framework that facilitates investment in batteries.
The convergence of peak demand, the lack of wind, and the drop in photovoltaic production at nightfall mean that combined cycle power plants remain essential. This is compounded by factors driving up gas prices, such as low EU reserves, which ultimately impact the final price. Industry sources acknowledge that the system is still functioning and that structural improvements will take time to bear fruit, especially given the impact of renewable energy intermittency on grid stability.
The future looks complex.
Spain cannot afford another blackout like the one in April, but the cost of preventing a second one is becoming unsustainable. Emergency measures, increased operating costs, and infrastructure upgrades are all part of a collective effort that is passed on to consumers through their electricity bills. Meanwhile, the energy transition requires accelerating the development of energy storage solutions and expanding interconnection capacity to guarantee a stable and affordable supply. Without these improvements, the risk of further blackouts will remain , and the path to a decarbonized model will be even more arduous.
