Thailand’s September 2026 electricity tariff: what changed for households and renters

How the revised household tariff works

Residential electricity remains progressive. The energy charge for the first 200 kWh is capped at THB3 per kWh, with the lowest-consumption residential schedule charging less for its earliest blocks. The energy charge is THB4.1584 per kWh for units 201–400 and THB4.3583 from unit 401 onward.

The higher band does not reprice the whole month. Only the consumption that falls into the next band is charged at that band’s rate. The bill also includes the fuel adjustment tariff, or Ft, which is THB0.1623 per kWh for September–December 2026, plus a monthly service charge and VAT.

That is why neither the THB3 headline nor the THB3.86 average tells a household exactly what its final bill will be. The result depends on consumption, customer classification and whether the customer is billed directly by MEA or PEA.

Why the change matters for some renters and temporary-meter users

The August tariff reform also broadened the residential-user definition to reflect actual long-term residential use in premises without permanent house registration, subject to the utilities’ conditions. That matters for some residents who had been paying under a more expensive temporary-electricity category.

PEA published its operational rules on September 11. A temporary-meter customer in its service area can apply for the residential category if the electricity is used only for residential purposes, the property has temporary house registration and there is a continuous payment history of at least six months. Applications opened on September 15. For qualifying customers who apply by December 30, 2026, PEA says the change can take effect from the September bill; applications from January 4, 2027 onward take effect from the application date.

In the MEA service area, the residential definition has also been revised to include premises used continuously as homes without permanent house registration, subject to the applicable criteria.

Renters still need to distinguish between the utility tariff and the amount their landlord charges them. Earlier announcements about the reform referred to rental homes, dormitories and apartments, but that does not mean every tenant automatically becomes a direct MEA or PEA residential customer. Where the building owner holds the utility account and re-bills occupants, the actual charge to the tenant still depends on the meter and billing arrangement for that property.

What to look for on a September bill

A customer billed directly by MEA or PEA should check the customer category, monthly consumption and the separate components of the bill. The THB3 figure applies to the energy charge on the first 200 kWh under the relevant progressive residential tariff; it is not the total all-in unit price.

Anyone using a temporary meter or living in a property without permanent house registration should check whether the account meets the utility’s conditions for residential reclassification. A tenant who pays electricity through a landlord should first establish who the registered utility customer is and how the landlord calculates the tenant’s charge.