After the Blackout Report: ERSE Now Weighs Compensations, but Don't Hold Your Breath

The final report on the April 2025 Iberian blackout confirmed what many in Portugal suspected: the country bore no responsibility for the cascading grid collapse that left the entire peninsula without power for up to 16 hours. Now, with the technical autopsy complete, attention turns to a more fraught question -- will anyone actually pay for the damage?

Environment and Energy Minister Maria da Graca Carvalho wasted no time framing the findings. "This report confirms that Portuguese national authorities are neither responsible for nor caused the blackout," she told journalists on Friday. "All of the causes are outside Portugal." The European Network of Transmission System Operators (ENTSO-E) identified three sequential failures -- in Granada, Badajoz, and Seville -- before the system unravelled across the peninsula.

The Compensation Question

With the technical phase concluded, the minister handed the baton to Portugal's energy regulator, ERSE, to evaluate what comes next. "Now is the moment for the national regulator, ERSE, to make its assessment and indicate the path forward regarding compensations," she said.

But experts have already tempered expectations. If the blackout is classified as an extraordinary event -- an unprecedented failure outside normal operating conditions -- there may be no legal basis for indemnities at all. As the Expresso newspaper reported, affected businesses and individuals who suffered losses may ultimately have no choice but to pursue claims through the courts, a process that could take years and cross international jurisdictions.

What the Report Actually Found

The ENTSO-E panel's 23 recommendations paint a picture of systemic vulnerability across the interconnected European grid. The primary technical failure was inadequate voltage control at Spanish generation facilities -- a requirement that Portugal had already mandated for all new power plants since 2019. Spain introduced the same rule only after the blackout.

Minister Carvalho noted that 90 percent of the report's recommendations are either already implemented or planned in Portugal, citing the country's existing voltage control requirements, data-sharing protocols, and grid resilience measures. Among the gaps still to be addressed: extending voltage control requirements to smaller generators and updating load-shedding plans more frequently.

What It Means Going Forward

For the millions of Portuguese residents and businesses that endured 12 hours without electricity -- hospitals on backup generators, traffic systems down, cold-chain logistics disrupted -- the report offers vindication but not necessarily relief. The path from "Spain caused it" to "here is your compensation cheque" remains legally complex and politically sensitive.

For expats and immigrants running businesses in Portugal, the episode underscored the importance of backup power planning and business continuity insurance. The EU's Energy Commissioner noted that the report reveals "new challenges" for the European electricity system, suggesting that interconnected grids will need substantially more investment to prevent a repeat.

Portugal may have been the victim in April 2025. Whether it will see justice -- financial or otherwise -- is a question the ERSE will now have to answer. The country, and its electricity consumers, are watching.

Read more: Understanding Portugal's Energy Crisis Framework

Related reading: Parliament's Blackout Inquiry Wants 72 Hours of Backup Power for Hospitals, Pharmacies and Food Retail