Philippine Sinter Corporation vs. National Transmission Corporation and Cagayan Electric Power and Light Company, Inc.

The Energy Regulatory Commission has the sole and exclusive authority under the EPIRA to set the standards distinguishing transmission from sub-transmission assets; consequently, mutual private agreements or contractual stipulations between a power supplier and a consumer cannot override the ERC’s regulatory classification, which properly deemed the 138kV Aplaya-PSC Line a sub-transmission asset eligible for sale to a qualified distribution utility.

Philippine Sinter Corporation (PSC) operates a sinter plant and receives electricity through the 138kV Aplaya-PSC Line under a Contract for the Supply of Electricity (CSE) with the National Power Corporation (NAPOCOR). Following the enactment of R.A. No. 9136 (EPIRA), NAPOCOR’s transmission functions were unbundled and transferred to the National Transmission Corporation (TRANSCO). In 2002, Cagayan Electric Power and Light Company, Inc. (CEPALCO), a local distribution utility, sought to acquire the 138kV line, asserting it was a sub-transmission asset eligible for sale under the EPIRA. TRANSCO opposed the acquisition, maintaining that the line was a transmission asset not subject to divestment. The dispute was elevated to the ERC for resolution under its guidelines governing the sale and transfer of sub-transmission assets.

• PSC, a domestic corporation operating a sinter plant at the Phividec Industrial Estate, is a directly-connected customer of NAPOCOR for electricity supply via the 138kV Aplaya-PSC Line, governed by a Contract for the Supply of Electricity (CSE).
• Upon the enactment of the EPIRA, NAPOCOR's generation and transmission functions were unbundled, and the operation and maintenance of the 138kV line were transferred to TRANSCO.
• CEPALCO, a distribution utility with a franchise covering Villanueva, Misamis Oriental, expressed interest in acquiring the 138kV line, asserting it was a sub-transmission asset eligible for sale under EPIRA guidelines.
• TRANSCO opposed the acquisition, classifying the line as a transmission asset, which is statutorily prohibited from being sold or disposed of.
• CEPALCO initiated dispute resolution proceedings before the ERC. The ERC denied TRANSCO's motion to dismiss and subsequently classified the line as a sub-transmission asset, ordering its restoration to the list of assets available for purchase by qualified distribution facilities or consortiums.
• The Court of Appeals affirmed the ERC's decision, prompting PSC to seek Supreme Court review, arguing that the contractual intent and standing issues warranted reversal.

• The 138kV Aplaya-PSC Line is unequivocally a transmission asset as expressly stipulated in the CSE and subsequent correspondence between NAPOCOR/TRANSCO and PSC.
• Reclassifying the line as a sub-transmission asset would unlawfully impair TRANSCO's contractual obligations to provide uninterrupted transmission services to PSC under their existing agreement.
• CEPALCO lacks the requisite legal personality and standing to initiate the proceedings since it is not directly connected to the 138kV line and has no proprietary interest in it.
• The CA and ERC should have dismissed the petition on the ground of lack of cause of action and improper party status.

• The ERC holds exclusive statutory authority under the EPIRA and its IRR to establish technical and functional criteria for distinguishing transmission from sub-transmission assets, rendering private contractual classifications legally immaterial.
• The 138kV line satisfies the statutory and regulatory criteria for a sub-transmission asset, as it is radial, directly connects a single end-user (PSC) to the grid, and serves a restricted geographic area with unidirectional power flow.
• The issue of CEPALCO's eligibility or qualification to acquire the asset was never raised as a relief in the ERC petition and falls outside the scope of the classification proceeding.
• The ERC's factual findings are supported by substantial evidence and are entitled to great respect and finality from the reviewing courts.

• Procedural Issues: Whether the CA and ERC erred in not dismissing the case due to the alleged lack of legal personality and standing of CEPALCO as a party to the dispute resolution proceedings.
• Substantive Issues: Whether the 138kV Aplaya-PSC Line is correctly classified as a sub-transmission asset subject to divestment under the EPIRA, despite contrary stipulations in the Contract for the Supply of Electricity.

• Procedural: The Court found no reversible error, holding that the eligibility of CEPALCO to acquire the asset was beyond the scope of the ERC's classification proceeding and was not among the reliefs sought in the petition. The Court emphasized that findings of fact by administrative bodies like the ERC, when based on substantial evidence, are controlling on reviewing courts and may only be disturbed upon showing grave abuse of discretion, fraud, or error of law.
• Substantive: The petition was denied. The Court ruled that the ERC possesses the sole authority to set standards distinguishing transmission from sub-transmission assets under Section 7 of the EPIRA and Rule 6 of its IRR. Private agreements or mutual classifications between PSC and TRANSCO cannot override this statutory mandate. Applying the technical criteria, the 138kV line is radial, directly connects an end-user to the grid, and exclusively serves that end-user, squarely fitting the definition of a sub-transmission asset. Thus, it is properly subject to divestment under the law.

• Deference to Administrative Agencies (Substantial Evidence Rule) — Factual findings of specialized administrative bodies, when supported by substantial evidence, are binding and accorded great weight by the courts, and can only be overturned upon a showing of grave abuse of discretion, fraud, or error of law.
• Statutory Authority Prevails Over Private Contracts — When a regulatory agency is vested by law with exclusive jurisdiction to set standards or classifications, private contractual stipulations between parties regarding the same subject matter are immaterial and cannot bind or limit the agency's regulatory mandate.

• "The so-called mutual agreement of the PSC and TRANSCO in their CSE or through their exchange of letters to classify the 138kV Aplaya-PSC line as a transmission asset is immaterial and without any binding legal effect since the legal authority to classify transmission and sub-transmission assets lies with the ERC, and not to either TRANSCO or PSC."
• "Well-settled is the rule that findings of fact of administrative bodies, such as the ERC in the instant case, if based on substantial evidence, are controlling on the reviewing authority."
• "Radial lines, power transformers, related protection equipment, control systems and other assets held by TRANSCO or its Buyer or Concessionaire which directly connect an End-User or group of End-Users to a Grid and are exclusively dedicated to the service of that End-User or group of End-Users shall be classified as Subtransmission Assets."

• Geronimo v. Commission on Audit — Cited to reinforce the settled doctrine that factual determinations of administrative agencies, when grounded on substantial evidence, are conclusive upon the courts and cannot be set aside absent grave abuse of discretion, fraud, or error of law.

• Section 7, R.A. No. 9136 (Electric Power Industry Reform Act of 2000) — Vests the ERC with the authority to regulate the transmission sector and set voltage standards distinguishing transmission from sub-transmission assets.
• Section 4, Rule 6, EPIRA Implementing Rules and Regulations — Mandates the ERC to issue guidelines for separating transmission and sub-transmission assets based on voltage level, function, and the objective of non-discriminatory open access.
• Section 4(b) and (c), Rule 6, EPIRA Implementing Rules and Regulations — Enumerates technical criteria for sub-transmission assets, including radial character, direct connection to end-users, restricted geographic consumption, and unidirectional power flow.
• Section 2(b), Article III, ERC Guidelines to the Sale and Transfer of TRANSCO Sub-Transmission Assets — Specifically classifies radial lines that directly and exclusively connect an end-user to a grid as sub-transmission assets.

• Perlas-Bernabe, Inting, Zalameda, and Delos Santos, JJ. — Concurred in the decision without submitting separate opinions, fully adopting the reasoning and disposition of the ponencia authored by Justice Hernando.