Customers of Manila Electric Co. or Meralco can heave a sigh of relief this Christmas as power rates are going down this month by approximately 80 centavos per kilowatt-hour due to lower generation charges.

Meralco, the country's largest power distributor, announced on Monday that overall power rates in December declined slightly to P11.26 from P12.05 per kWh in November.

The adjustment translates to savings of as much as P159 in the total electricity bill of residential customers consuming 200 kWh monthly.

Meralco spokesperson Joe Zaldarriaga said the December rate cut more than offset the increases implemented in the past two months.

  Based on the data provided by Meralco, the generation charge this month went down by 66 centavos to P6.5332 from P7.1938 per kWh last month due to lower charges by the Wholesale Electricity Spot Market or WESM and independent power producers or IPPs.

Spot mart price cuts

WESM charges slid by P2.76 per kWh with the improved supply situation in the Luzon grid as demand went down by around 421 megawatts or MW and average plant capacity on outage decreased by about 679 MW.

Lower spot market prices, on the other hand, prevented the imposition of the secondary price cap in November.

Charges by IPPs, as per Meralco, went down by roughly 48 centavos per kWh due to the First Gas plants' reduced use of more expensive liquid fuel and lower international coal prices.

Also contributing to this was the appreciation of the peso, which affected around 97 percent of IPP costs that were dollar-denominated.

On the other hand, there was a slight upward adjustment of about 8 centavos per kWh in charges from power supply agreements or PSAs due to lower average PSA dispatch.

WESM, IPPs and PSAs accounted for 20 percent, 32 percent, and 48 percent, respectively, of Meralco's total energy requirement for the period.

Transmission charges, taxes, and other charges also registered a net reduction of P0.1355 per kWh.