The Visayas Grid was again placed under a Yellow Alert on Thursday, June 25, from 4:00 p.m. to 9:00 p.m. due to insufficient operating reserves brought about by multiple power plant outages and an expected increase in electricity demand.

In its latest advisory, the National Grid Corporation of the Philippines (NGCP) said that the grid's available capacity stood at 2,504 megawatts (MW), while peak demand was projected to reach 2,358 MW during the alert period.

A total of 27 power plants remain on forced outage, including 10 plants that went offline in June 2026, eight since May 2026, one since March 2026, three since 2025, two since 2024, two since 2023, and one since 2021.

In addition, 16 power plants are operating at reduced or derated capacities, resulting in a combined 1,030.5 MW of unavailable capacity in the Visayas Grid.

NGCP said the Yellow Alert was triggered by the unavailability of several major coal-fired power plants in the region, particularly TVI Units 1 and 2 and PEDC Unit 3, as well as the forecast of high electricity demand.

A Yellow Alert is declared when the operating margin is insufficient to meet the contingency requirement of the transmission grid, indicating tighter power reserves but not necessarily a power interruption.