Mindanao: An expected high electricity demand in the Mindanao grid between 6 p.m. and 8 p.m. on Friday made the National Grid Corporation of the Philippines (NGCP) declare a yellow alert status for the said two-hour period.

According to Philippines News Agency, a yellow alert indicates adequate supply to meet demand, but the operating margin is not sufficient to cover the contingent requirement. NGCP, in an advisory past 3 p.m., stated that the available capacity during this period is 2,827 megawatts (MW) while peak demand is 2,667 MW.

The advisory highlighted that the supply in the grid is constrained as '11 plants have been on forced outage from June to July, and two other power plants have been out since 2024.' It also noted that 'three power plants are running on derated capacities, resulting in a total of 638.3 MW unavailable to the grid.'

Meanwhile, the advisory mentioned that 'the Luzon grid is under normal condition,' indicating a stable supply situation in another region of the country.