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5h ago

Spain’s Grid Operator Flags Rapid Voltage Swings as Regulator Tightens Oversight

CNMC launched time‑limited measures, amending procedures after REE linked recent instability to low demand, high solar output, slow conventional response.

Red Eléctrica detecta "variaciones bruscas de tensión" últimos días y reforzará sistema
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Overview

  • REE reported sharp voltage variations over the past two weeks and urgently requested changes to operating procedures due to potential supply risk.
  • CNMC opened time‑bound actions and modified operating procedures 3.1, 3.2, 7.2 and 7.4 to reinforce supervision and voltage control.
  • REE attributed the swings to periods of low demand, strong solar generation, plus a delayed response from conventional units that manage voltage.
  • The Energy Ministry said the variations remained within regulatory limits despite many conventional plants being online, instructing REE and CNMC to ensure compliance.
  • Political pressure rose as Madrid vice mayor Inma Sanz warned the country could be closer to another blackout and demanded accountability, while REE also issued a reassurance that no recent supply risk existed.