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The Spanish market regulator has approved changes to control voltage fluctuations

The Spanish market regulator has approved changes to control voltage fluctuations

The Spanish market regulator said on Monday that it had approved some of technical changes requested by national grid operator, after it detected sharp voltage swings across the country following a massive blackout last April.

Initial measures are for 30 days, but they can be extended up to 3 months.

The CNMC has approved some technical measures requested from grid operator REE with minor tweaks, but it has postponed a decision on a major proposed measure that would change the power grid voltage requirements for both conventional and renewable power plants.

The CNMC stated that the modification of this measure "requires a deeper analysis" after feedback from generators who raised doubts about the ability to meet the new obligations.

It said: "Therefore its immediate adoption is inappropriate until the evidence provided during the hearing process by the parties and its implications has been properly analysed."

The grid operator requested these measures in early April, warning of "rapid voltage fluctuations" that could "potentially cause demand and/or production disconnections which end up destabilizing the electrical system." In a report published this month, the European network of electricity transmission systems operators stated that the power outage on the Iberian Peninsula that occurred on April 28th was the first blackout known to be caused by excessive voltage. (Reporting from Pietro Lombardi in Madrid and Joan Faus; editing by Matthew Lewis.)

(source: Reuters)