G.R. No. 163935 February 2, 2006
NATIONAL ASSOCIATION OF ELECTRICITY CONSUMERS FOR REFORMS (NASECORE), ET AL., Petitioners, vs. ENERGY REGULATORY COMMISSION (ERC) AND MANILA ELECTRIC COMPANY (MERALCO), Respondents.

FACTS

Pursuant to the Electric Power Industry Reform Act (EPIRA), the Energy Regulatory Commission (ERC) issued an Order dated June 2, 2004, in ERC Case No. 2004-112, approving an increase in MERALCO’s generation charge. The petitioners, consumer groups, challenged this order via a petition for certiorari, prohibition, and injunction. They argued that the ERC’s approval was void for lack of prior notice and publication, violating Section 4(e), Rule 3 of the EPIRA’s Implementing Rules and Regulations (IRR), which mandates publication of any proposed rate change in newspapers of general circulation at least twice for two successive weeks before any public hearing.
The ERC and MERALCO countered that the rate adjustment was not a new rate-fixing proceeding requiring such publication but was merely an automatic cost recovery mechanism under the Generation Rate Adjustment Mechanism (GRAM). They contended that the GRAM rules, which allowed for quarterly adjustments based on changes in fuel and purchased power costs, had already been published and subjected to public hearing when initially approved. Thus, the subsequent implementation of adjustments under these pre-approved rules did not require a new publication for each periodic change.

ISSUE

Whether the ERC committed grave abuse of discretion in approving MERALCO’s generation charge increase without prior notice and publication as required by the EPIRA’s IRR.

RULING

The Supreme Court ruled in the negative, finding no grave abuse of discretion by the ERC. The legal logic hinges on distinguishing between a general rate-fixing case and the implementation of a pre-approved adjustment formula. The GRAM was established as a specific, ERC-approved mechanism allowing distribution utilities to recover fluctuations in generation costs. The rules governing GRAM, including its formula and the conditions for its application, had already undergone the requisite notice and public hearing prior to their adoption.
The subsequent quarterly adjustments, such as the one challenged, are mere mathematical applications of this pre-existing, duly promulgated formula to new cost data. They are not new rate-fixing proceedings that would trigger the separate publication requirement under the IRR for each adjustment. To require a new publication and hearing for every periodic adjustment would negate the efficiency and purpose of the automatic adjustment mechanism, creating an administrative and regulatory burden contrary to the EPIRA’s policy objectives. The Court held that the due process requirements were satisfied by the prior hearings on the GRAM rules themselves, and the ERC’s approval of the specific adjustment based on verified cost data was a valid exercise of its quasi-legislative and quasi-judicial powers.