Overview

• The CNMC launched temporary, time‑bounded measures and amended operation procedures 3.1, 3.2, 7.2 and 7.4 after REE reported abrupt voltage swings that could threaten supply stability.
• REE linked recent voltage events to low demand with high solar output and slow voltage‑control response from conventional plants, following its formal alert to regulators.
• On October 1, REE required wind and solar plants to lengthen their injection ramp from 2 to 15 minutes, a change industry groups say will cut production and revenues until renewables can provide voltage control from January 1, 2026.
• MITECO opened consultation on a 2030 transmission plan worth about €13.6 billion to integrate roughly 159 GW of renewables and more than 22 GW of storage and to bolster interconnections, warning of a potential 12% renewable spill without upgrades.
• Regions are pressing changes: Madrid warns current phasing risks power for about 70,000 planned homes, Catalonia backs key projects but seeks more connection points and earlier lines such as Vic–Olvan, Córdoba’s north laments deferral beyond 2030, and Castilla‑La Mancha highlights support for projects like Hydnum Steel; Iberdrola also scheduled maintenance outages in Valencia next week.