Burden of Proof in Electricity Pilferage: Meralco Must Substantiate Tampering Claims

The Supreme Court's 2002 decision in Manila Electric Company v. Macro Textile Mills Corporation (G.R. No. 126243) clarifies a crucial point for electricity consumers: a utility company cannot impose differential billings for alleged pilferage without presenting solid, credible evidence. The case reminds public utilities that they bear the burden of substantiating tampering claims, and that consumers are entitled to transparency in billing computations.

The Dispute

Macro Textile Mills Corporation was a general power customer of Meralco, consuming electricity since 1982. After a fire destroyed its weaving department in February 1982, the company's operations were reduced to dyeing only, and its electric consumption declined significantly. Despite this, Macro religiously paid its monthly bills.

In June 1986, Meralco demanded P2,015,630.18 from Macro, representing alleged unregistered consumption from tampered electric meters. Meralco did not specify how it arrived at the amount. When Macro requested clarification and re-inspection, Meralco refused and instead threatened disconnection. Macro was eventually forced to pay P100,000 under protest to avoid losing its electric service.

The Issue

The case presented two main questions: whether Macro actually tampered with its electric meters, and whether Meralco correctly computed the differential billings.

The Court's Ruling

The Supreme Court affirmed the lower courts' findings in favor of Macro, deleting only the award of exemplary damages. The Court emphasized that the issues raised were factual, and it found no reason to disturb the trial court's assessment of the evidence.

Failure to present the tampered meter. The most significant flaw in Meralco's case was its failure to present the allegedly tampered meter switch in court. Meralco claimed the device was "lost" and instead presented a simulated switch. The Court found this created doubt about whether the evidence was indeed the same item taken from Macro's premises.

Questionable inspection procedures. The Court noted that Meralco's inspections were conducted in a manner that "leaves much to be desired in terms of transparency and rudimentary fairness." The meter box was padlocked with Meralco holding the key, yet Meralco's personnel had to open it with a bolt cutter. Inspection reports bore signatures of Macro representatives who later impugned the high-handed manner of the inspections. The Court noted that defects could have been caused by the forcible manner of inspection itself.

Unsubstantiated billing computations. Meralco's differential billing was based on simulation tests conducted in its own office, without a representative from the Board of Energy or Macro present. The Court found the method of billing "lacking in substantial basis," noting that the records did not indicate how the amounts were computed. Meralco's own engineer admitted he based his computation on a totalizer meter that he had never seen and could not produce in court.

The Governing Law

At the time of the alleged tampering, Presidential Decree No. 401 governed the penalization of unauthorized installation of electrical connections and the use of tampered electrical meters. The Court noted that if Meralco truly discovered tampering, it could have filed the appropriate criminal complaint under this decree. Instead, it resorted to unilateral billing and threats of disconnection.

Practical Takeaways

• Utilities bear the burden of proof. A power company alleging pilferage must present credible, tangible evidence — including the actual tampered device — to support its claims.
• Consumers have a right to explanations. Public utilities are duty-bound to explain the basis for their billings, especially in cases of alleged unregistered consumption.
• Simulation tests are not enough. Tests conducted without the customer's representative or a regulatory body's presence carry little evidentiary weight.
• Inspection procedures matter. If a utility's own inspection methods are questionable or high-handed, the findings may be disregarded.
• Public utilities bear the loss for their negligence. If a utility fails to keep meters in serviceable condition or delays in addressing defects, it cannot later demand payment for unrecorded electricity.

This article is general information and not legal advice. For your specific situation, consult a lawyer or ask ASG Legal AI.