
The Metropolitan Electricity Authority (MEA) has announced lower electricity rates for residential customers on progressive tariffs, effective from the September 2026 billing cycle, with the first bills under the revised structure issued on September 14.
The adjustment follows a resolution approved by the Energy Regulatory Commission (ERC) on August 5, 2026.
MEA said the revised tariffs remove the cost burden associated with electricity for public use, in accordance with a National Energy Policy Council (NEPC) resolution.
Under the new structure, energy charges for the first 200 units are capped at THB3 per unit. From the 201st unit onwards, energy charges have been reduced by THB0.0634 per unit compared with the previous rates.
Residential customers on progressive tariffs are divided into two categories, with the following energy charges.
Tariff 1.1: residential category for consumption of up to 150 units per month
|
Consumption band |
Energy charge (THB per unit) |
|
Units 1–15 |
2.3488 |
|
Units 16–25 |
2.9882 |
|
Units 26–200 |
3.0000 |
|
Units 201–400 |
4.1584 |
|
Unit 401 onwards |
4.3583 |
Tariff 1.2: residential category for consumption exceeding 150 units per month
|
Consumption band |
Energy charge (THB per unit) |
|
Units 1–200 |
3.0000 |
|
Units 201–400 |
4.1584 |
|
Unit 401 onwards |
4.3583 |
Energy charges are calculated separately for the number of units consumed within each band, rather than applying a single rate to all electricity used.
The rates above exclude the service charge, fuel adjustment charge (Ft) and value-added tax (VAT). Each household’s final monthly bill therefore depends on its electricity consumption and the other charges applicable to that billing period.
MEA said it had completed updates and testing of its bill-calculation, meter-reading and bill-notification systems. Calculations have been checked against the new tariff structure to ensure bills can be issued on schedule.
Customers can obtain further information from the MEA Call Centre on 1130, available 24 hours a day.