Case Digest (G.R. No. 183706)
Facts:
On December 23, 1993, Manila Electric Company (MERALCO) filed with the Energy Regulatory Board (ERB) an application to increase its distribution charge by an average of ₱0.21 per kilowatt-hour (kwh), seeking provisional approval under the Public Service Act and Executive Order No. 172. On January 28, 1994, the ERB granted a provisional increase of ₱0.184/kwh, subject to an audit by the Commission on Audit (COA) and a requirement to refund any excess collection. After receiving COA Audit Report SAO No. 95-07 on February 11, 1997—recommending the exclusion of income tax from operating expenses and the use of the “net average investment method” for rate-base computation—the ERB, on February 16, 1998, adopted those recommendations. It authorized a final rate adjustment of ₱0.017/kwh effective February 1994 and directed MERALCO to refund or credit an excess of ₱0.167/kwh to customers through February 1998. MERALCO appealed to the Court of Appeals, which set aside the refund order andCase Digest (G.R. No. 183706)
Facts:
- Application for Rate Revision
- On December 23, 1993, MERALCO filed with the Energy Regulatory Board (ERB) an application to revise its rate schedules, reflecting an average increase of ₱0.21 per kWh in its distribution charge.
- The application included a prayer for provisional approval under Section 16(c) of the Public Service Act and Section 8 of Executive Order No. 172.
- Provisional Approval and Audit Mandate
- On January 28, 1994, the ERB issued an order granting a provisional increase of ₱0.184 per kWh, conditioned on a Commission on Audit (COA) examination of MERALCO’s books covering at least 12 consecutive months.
- The ERB required that any excess collected under the provisional rate be refunded or credited to customers if a later audit showed entitlement to a lesser increase.
- COA Report and ERB Final Decision
- On February 11, 1997, COA submitted Audit Report SAO No. 95-07, recommending (a) exclusion of income taxes from operating expenses and (b) use of the net average investment method to compute the rate base.
- On February 16, 1998, the ERB adopted these recommendations, authorized a permanent rate adjustment of ₱0.017 per kWh (effective February 1994 billing cycles), and ordered the refund or credit of the excess ₱0.167 per kWh through February 1998.
- Court of Appeals Proceedings
- MERALCO appealed to the Court of Appeals, which set aside the ERB’s order insofar as it reduced rates by ₱0.167 per kWh and directed refunds or credits to customers.
- The Court of Appeals denied petitions for reconsideration. The ERB and LAMP petitioners elevated the case to the Supreme Court.
Issues:
- Inclusion of Income Tax in Operating Expenses
- Should income taxes paid by MERALCO be allowed as part of its operating expenses for rate-making purposes?
- Valuation Method for Rate Base
- Should the ERB have used the net average investment method (actual‐months‐in‐service) rather than the average investment (trending) method to determine MERALCO’s rate base?
- Scope of Judicial Review
- Did the Court of Appeals err in setting aside the ERB’s factual and discretionary determinations on rate adjustment and refunds?
Ruling:
- (Subscriber-Only)
Ratio:
- (Subscriber-Only)
Doctrine:
- (Subscriber-Only)