Upticks in ancillary services (AS) rates for July primary drove the higher transmission rates for this month, the National Grid Corporation of the Philippines (NGCP) said Monday.

Julius Datingaling, NGCP business and regulatory development head, said AS rates, which is the pass-through cost for power supplied by AS providers, rose by 9.32 percent from the P0.56/kilowatt hour (kWh) for the supply provided last May to P0.6182/kWh the following month, which reflects on the July billing of consumers.

He said overall equivalent average transmission rates for the billing period last June increased by 5.49 percent to P1.2113/kWh, from P1.1482/kWh in the previous month.

“For the July 2025 electric bill of the end consumers, NGCP charges only P0.46/kWh for the delivery of its services,” he added.

Aside from the AS, NGCP’s transmission wheeling rates, which NGCP charges for its primary service of delivering power, also increased.

Data released by NGCP on Monday showed that transmission wheeling rates inched up by 0.39 percent last June to P0.4611/kWh from P0.4593/kWh in the previous month.

Meanwhile, Datingaling said NGCP will implement starting August this year the decision to the Energy Regulatory Commission (ERC) that allows NGCP to collect P28.28 billion worth of under recovery from consumers.

“We will implement the decision of the ERC for the cost recovery this coming July 2025…The impact of the consumers will be in August,” he said.

ERC has allowed NGCP to collect within a seven-year period the under recovery after the latter completed its fourth recovery reset.

PNA PHOTO