The overall transmission rate this month went up by almost 8 percent to P1.5105 per kilowatt hour (kWh) up from the P1.3998/kWh, due to higher charges from ancillary services (AS), the National Grid Corporation of the Philippines (NGCP) said Tuesday.
Transmission rates make up of ancillary service (AS) and transmission wheeling rates.
Transmission wheeling rates refer to what the NGCP charges for its core service of delivering electricity, while AS rates cover the pass-through costs of services sourced from the Reserve Market (RM) and from providers with bilateral contracts with NGCP to stabilize the grid during power supply-demand imbalances.
For the October supply month, NGCP Assistant Vice President and Regulatory Management Head Julius Ryan Datingaling said power consumers will see a slight increase in transmission rates in their November 2025 bills due to higher AS rates, which rose by P0.0997/kWh, from P0.6546/kWh in September to P0.7542/kWh in October, representing a 15.23-percent increase.
NGCP said it does not earn from AS and does not benefit from any change in AS prices, as these are remitted directly to generation companies with bilateral contracts with NGCP, and to the Independent Electricity Market Operator of the Philippines (IEMOP) for AS sourced from the RM.
Meanwhile, NGCP’s transmission wheeling rate increased by just P0.0034/kWh, from P0.5920/kWh in September to P0.5953/kWh in October, equivalent to a 0.57 percent increase.
NGCP Spokesperson Cynthia Alabanza said the increase in transmission wheeling rates has no effect on NGCP’s revenue as its income is cap-limited by the Energy Regulatory Commission.