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Spain's grid operator warns of new tension swings, urges measures to avoid blackout

Published by Global Banking & Finance Review

Posted on October 8, 2025

1 min read

· Last updated: January 21, 2026

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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

Spain's Grid Operator Warns of Voltage Swings, Calls for Action

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)

Key Takeaways

  • Spain's grid operator detected steep voltage swings.
  • Potential impact on power supply similar to April's blackout.
  • Red Electrica urges swift technical changes.
  • CNMC to hold a public consultation next week.
  • Voltage swings could lead to significant power issues.

Frequently Asked Questions

What is voltage swing?
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.
What is a blackout?
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.
What is a public consultation?
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.
What is the role of a grid operator?
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.
What is the CNMC?
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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