The Visayas power grid will again be placed under yellow alert status from 6:00 p.m. to 9:00 p.m. on Saturday, May 23, as available operating reserves tighten amid high demand and multiple plant outages, the National Grid Corporation of the Philippines (NGCP) said.

According to NGCP, the grid’s available capacity is at 2,626 megawatts (MW), while peak demand is forecast to reach 2,423 MW.

“9 plants are on forced outage since May 2026, 1 plant since March 2026, 3 plants since 2025, 2 plants since 2024, 2 plants since 2023, and 1 plant since 2021, while 16 plants are running on derated capacities, for a total of 920.6MW unavailable to the grid,” it said.

Among the key factors cited for the yellow alert declaration are the unavailability of major Visayas coal plants TVI Unit 1, TVI Unit 2, and PEDC Unit 3, as well as the high forecasted system demand during the advisory period.

NGCP said a yellow alert is issued when operating reserves fall below the required level but remain sufficient to maintain grid stability.