What changed
2026-09-18 11:36 UTC → 2026-09-20 07:58 UTC ·
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Reports from BBVA Research indicated that insufficient electrical grid capacity in Spain was creating a significant bottleneck for the residential sector, potentially delaying more than 80,000 projected homes. While aggregate electricity generation was sufficient, a mismatch between generation locations and high-demand areas necessitated is addressing electrical grid reinforcements bottlenecks and security of supply through new substations, processes that could take five to eight years due to administrative regulatory frameworks and environmental requirements. To address these challenges, the increased investment. The Ministry for the Ecological Transition and the Demographic Challenge (MITECO) has moved to implement established a new capacity market for the peninsular electricity system. This system via Order TED/966/2026. Managed by Red Eléctrica de España (REE) and supervised by the National Commission on Markets and Competition (CNMC), the market will be managed through technology-neutral auctions using a utilizes technology-neutral, ‘pay-as-bid’ system, where winners receive the exact price they offer. The mechanism is designed auctions to remunerate generation, battery storage, and demand-side resources for providing firm capacity and flexibility. resources. To ensure environmental alignment, encourage clean energy, participating generation plants must adhere to an emissions limit of 550 grams of CO2 per kWh, with kWh. The market includes various modalities: main auctions for existing installations (12-month terms), auctions for new investments specifically targeting non-fossil technologies. In conjunction (up to 15 years), adjustment auctions for unforeseen issues, and transitional auctions. This coincides with this market, the Spanish a government has increased planned commitment to increase electricity grid investments to over 17,000 million euros through 2030. This expansion aims 2030 to support the integration of renewable energy integration and storage systems while meeting the growing demand from industrial consumers, such as data centers. demand. Despite these efforts, recent data measures, the grid faces severe saturation. Data from Foro Industria y Energía (FIE) and Opina 360 indicates that the grid is facing significant saturation. As as of September 2026, 86.5% of Spain’s 6,127 operational substations are at full capacity, leaving only 13.5% with available access. This represents reflects a net loss of 282.2 MW of available capacity since March. Regional saturation is particularly acute in the Basque Country and provinces including Álava, Guipúzcoa, Vizcaya, Málaga, Albacete, Guadalajara, Salamanca, and Valladolid, which report 100% saturation. Juan Francisco Caro, director of Opina 360, noted that despite government measures introduced via Royal Decree-law 7/2026 to prevent capacity hoarding, the grid remains nearly as saturated as it was six months ago. ago, despite Royal Decree-law 7/2026 intended to prevent capacity hoarding.