The Energy Regulatory Commission (ERC) has raised the installed generating capacity (IGC) and corresponding market share limitations (MSL) for both national and regional grids, reflecting recent additions to the country’s power supply mix.
In Resolution No. 14, Series of 2025, dated July 30 but made public only this weekend, the ERC cited the entry of new power plants after initial figures were released in March as primary reason for the adjustments.
Under the Electric Power Industry Reform Act of 2001, a single entity may not own, operate, or control more than 30 percent of a grid’s installed capacity or 25 percent of the national grid capacity, thresholds that are recalculated annually.
Revised National Limits for 2025:
National IGC: Increased to 28,390,074 kW (+4.8 percent) from 27,096,046 kW
National MSL (25 percent): Now at 7,097,519 kW, up from 6,774,012 kW
Regional Grid Updates:
Luzon IGC: Increased to 20,659,316 kW
MSL (30 percent): 6,197,795 kW
Visayas IGC: Rose to 3,443,158 kW
MSL (30 percent): 1,032,947 kW
Mindanao IGC: Slightly decreased to 4,287,600 kW
MSL (30 percent): 1,286,280 kW
ERC did not elaborate on the decrease in Mindanao’s IGC.
Top Market Players (as of July 2025):
Aboitiz Equity Ventures (AEV):
National share: 6,774,443 kW (23.86 percent)
Luzon: 5,567,913 kW (26.95 percent)
Visayas: 567,700 kW (16.49 percent)
Mindanao: 638,830 kW (14.90 percent)
San Miguel Corp. (SMC):
National share: 5,710,076 kW (20.11 percent)
Luzon: 5,149,516 kW (24.93 percent)
Visayas: 180,670 kW (5.25 percent)
Mindanao: 380,070 kW (8.87 percent)
First Gen Corp.:
National share: 3,524,476 kW (12.41 percent)
Visayas: 708,480 kW (20.58 percent)
Meralco:
National share: 2,288,021 kW (8.06 percent)
Strongest presence in Luzon and Visayas
Ayala Corp.:
National share: 1,477,532 kW (5.20 percent)
No presence in Mindanao
ERC noted that market recalibrations ensure compliance with legal ownership caps and support competitive dynamics as new generation assets come online. The updated thresholds also serve as a regulatory mechanism to curb market dominance and promote fair access within the power sector.
