Energy Regulatory Commission Proposes Price Cap on Reserve Market to Shield Consumers from High Power Costs

ERC Drafts Secondary Price Caps for Reserve Market

The Energy Regulatory Commission (ERC) issued a new draft resolution. This proposal establishes a secondary price cap within the reserve market of the Wholesale Electricity Spot Market (WESM). Regulators want to protect utility consumers from sustained high electricity prices. This action precedes the potential resumption of the reserve market. The platform procures standby power capacity to stabilize the grid during plant or transmission line outages. Because consumers bear ancillary service costs, regulators instituted these safeguard measures following historical price spikes.

Rolling Average Framework and Regional Simulations

The Independent Electricity Market Operator of the Philippines (IEMOP) will track a 72-hour rolling average price for each reserve type. This system triggers price restrictions whenever predetermined cumulative thresholds are exceeded. Furthermore, these caps apply independently across Luzon, the Visayas, and Mindanao regional grids. In ERC simulations using historical data from August and September, the mechanism reduced average reserve prices. Prices dropped by 12 to 50 percent in the Visayas and 17 to 33 percent in Mindanao. Meanwhile, Luzon prices remained unaffected below trigger limits.

Balancing Grid Reliability and Consumer Affordability

The proposed secondary price cap addresses critical vulnerabilities from previous operations. Earlier reserve purchases added noticeable financial burdens to regional consumer rates. By introducing formal pricing boundaries before full market reactivation, the ERC balances grid reliability with consumer affordability. Stakeholder reviews and public consultations currently finalize these guidelines. These steps ensure robust market oversight as the energy sector transitions toward stable commercial operations.