Published by Global Banking & Finance Review®
Posted on October 8, 2025
1 min readLast updated: January 21, 2026
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Spain's grid operator warns of significant voltage swings that could impact power supply, urging immediate technical changes. CNMC plans a public consultation.
MADRID (Reuters) -Spain's grid operator Red Electrica has detected steep voltage swings in the system over the past two weeks that are capable of affecting power supply in the country that suffered a massive blackout in April, it warned in a document sent to market regulator CNMC.
It urged swift technical changes to be implemented to avoid any such impact. The CNMC said on Wednesday it was calling a public consultation for next week to address the issue.
(Reporting by Corina Pons and Andrei Khalip, editing by Pietro Lombardi)
Voltage swing refers to the fluctuation in voltage levels within an electrical system. These swings can affect the stability and reliability of power supply, potentially leading to outages.
A blackout is a complete loss of electrical power in a specific area. It can occur due to various reasons, including system overload, equipment failure, or natural disasters.
A public consultation is a process where stakeholders and the general public are invited to provide feedback on proposed policies or changes. This helps regulators understand community concerns and preferences.
A grid operator manages the electricity transmission network, ensuring a stable and reliable power supply. They monitor system performance and coordinate responses to any disruptions.
The CNMC, or Comisión Nacional de los Mercados y la Competencia, is Spain's regulatory authority responsible for overseeing competition and regulating markets, including energy and telecommunications.
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