My electric meter is running too fast — am I entitled to a refund?

Short answer

Yes, and the entitlement is written down. Article 10 of the ERC's Magna Carta for Residential Electricity Consumers gives "the right to a refund in cases of overbilling by the distribution utility arising from a meter testing showing that the said meter was fast without any evidence of tampering", and it sets the terms: where a meter in service is found to have "an average error of more than the tolerance of plus two percent, the customer is entitled to a refund, for a maximum period of six (6) months prior to the date of discovery, to be applied to the customer's future billings." Note the form the refund takes — it is credited against your future bills rather than paid back in cash. Start with the test, because that is a right too and it is free: Article 12 lets you require your utility to test your meter "once every two (2) years, free of charge" using an ERC-sealed standard, and "a written report showing the result of such test shall be furnished the customer." Ask more often than every two years and the utility may charge a testing fee, but only if the meter turns out to be within tolerance. You may also ask the ERC itself to test it for a fee under its published schedule, and Article 9 gives you the right to demand production of the meter test report with the findings of whoever tested it. If the meter is confirmed fast and the refund is refused, that is what you escalate — first to your utility's Consumer Welfare Desk, which Article 27 makes a precondition, then to the Energy Regulatory Commission. LabanPH will write both letters for you, free and without an account, at labanph.org/complaints/build.