In response to the massive blackout that affected the Iberian Peninsula on April 28, 2025, the Spanish government has announced a comprehensive package of measures aimed at preventing future incidents.

Minister of Ecological Transition Sara Aagesen emphasized that the plan is designed to make the power system more robust and efficient, focusing on improved supervision and control over electrical tension and oscillations.

Under the new framework, renewable energy units, such as solar and wind, will be allowed to manage electrical grid voltage on par with traditional production technologies.

The planned reforms include improved voltage control measures and the ability to absorb fluctuations that contributed to the grid failure, with a strong emphasis on rapid implementation.

Key initiatives will also ease deadlines for new wind and solar projects and promote energy storage solutions, particularly the installation of batteries at renewable energy sites.

The urgent measures include enhanced voltage control protocols, which were identified as a critical factor in the blackout.

As part of these reforms, the National Commission on Markets and Competition (CNMC) will bolster its supervisory role and evaluate the voltage control obligations of electrical agents within six months.

The updated regulations aim to create a consistent approach for both renewable energy facilities and traditional generating plants, which previously had limited voltage control capabilities.

Additionally, new local markets will be established to contract extra capacity, enhancing service efficiency and incentivizing investment in voltage control capabilities.

A government report indicated that insufficient voltage control capacity was a significant factor in the blackout, which impacted both mainland Spain and Portugal.

The blackout was attributed to a combination of factors that led to an overload the system could not manage, despite having sufficient infrastructure, highlighting planning deficiencies by Red Eléctrica (REE) and failures by energy producers.

Despite previous criticism of the renewable energy sector as a potential cause of the outage, investigations have since cleared them of blame.