Overview

• Red Eléctrica requested urgent changes to operating procedures after two weeks of sharp voltage variations across the network.
• The CNMC began processing time‑limited measures and updated operating procedures 3.1, 3.2, 7.2 and 7.4 to bolster short‑term security.
• REE links the instability to low demand combined with high solar output and slow response from units responsible for continuous voltage control.
• The energy ministry confirmed the fluctuations stayed within established thresholds despite a high number of conventional groups connected.
• The alerts revive issues identified after the April 28 Iberian blackout, including cascading overvoltages, generator obligations, telemetry gaps and overall grid resilience.