My Meralco bill suddenly doubled — how do I dispute it?
Last updated: 2026-07-11 · Educational content; not legal advice.
Short answer
You have the right to question a sudden bill spike and to demand that your meter be tested. Under the ERC's Magna Carta for Residential Electricity Consumers, a residential customer may dispute a billing and request a meter test, and if the meter is found to run fast beyond the allowed tolerance (an average error of more than +2%) without evidence of tampering, you are entitled to a refund for up to six (6) months before the error was discovered. First, ask the utility in writing for the actual meter reading behind the bill — a spike is often an estimated or catch-up reading — pay the undisputed portion to avoid disconnection, and request the meter test and its written test report. If the utility does not resolve it, escalate to the Energy Regulatory Commission (ERC).
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Frequently asked
Can I demand that the utility test my meter?
Yes. The Magna Carta for Residential Electricity Consumers gives you the right to request a meter test and to see the written meter-test report showing the findings.
What refund do I get if my meter was running fast?
If a test shows the meter was fast beyond the +2% tolerance without tampering, the Magna Carta entitles you to a refund for up to six months prior to the discovery of the error.
Why did my bill spike without using more power?
Common causes are an estimated reading followed by a catch-up actual reading, a rate adjustment, a change in the billing-period length, or a meter error. Ask the utility for the actual reading and the computation, and request a meter test if the spike is unexplained.
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Your rights on mobile, internet, electricity, and water — slow or undelivered broadband and rebates (NTC), billing disputes and overcharges, the notice required before disconnection and the days you cannot be cut off, prepaid load validity, SIM deactivation under the SIM Registration Act, electricity bill-deposit refunds and meter errors (the ERC Magna Carta for Residential Electricity Consumers), and how to escalate past your provider to the NTC, ERC, or MWSS.