MEA and PEA household tariff
Thailand Electricity Bill Calculator 2026 | MEA & PEA
Enter monthly kWh and choose MEA or PEA. The calculator applies the selected household or small-business tariff, editable Ft charge, service charge and 7% VAT, then explains every bill component.
Start calculatingYour figures
Calculate your estimate
Adjust any field. The result updates immediately and stays on this device unless you choose to share it.
Estimated electricity bill
—Enter your figures to see the estimate.
- Energy charge
- —
- Ft charge
- —
- Service charge and VAT
- —
- Average cost per kWh
- —
- Applied tariff
- —
- Difference from entered bill
- —
| Applied tier | kWh | Rate | Charge |
|---|
Estimates use the values entered and the methodology documented below. Check current provider or authority information before acting.
Built for the complete search intent
Identify the provider, tariff and Ft period before comparing a bill
A useful Thai electricity estimate needs more than a single baht-per-unit figure. This calculator separates the tiered energy charge, Ft adjustment, service charge and VAT, then lets you compare the result with the amount printed on a real bill.
MEA calculator, PEA calculator and Thailand electricity bill calculator- Choose MEA
- Bangkok metroUse MEA for bills issued in Bangkok, Nonthaburi and Samut Prakan.
- Choose PEA
- Other provincesUse PEA for most addresses outside the three MEA provinces.
- Current default Ft
- 0.1623 THB/kWhThe default represents the May-August 2026 period and remains editable.
- Best evidence
- Your tariff codeUse tariff 1.1.1 or 1.1.2 from the bill instead of relying on automatic selection.
Bill decoder
What to copy from an MEA or PEA bill
Enter the source values first. The live bill anatomy then shows which component creates the difference.
| Bill item | Where to find it | How the calculator uses it |
|---|---|---|
| Used energy | Current bill, shown in kWh | Allocates consumption across the applicable energy tiers. |
| Provider | MEA or PEA logo and name | Confirms the service territory and labels the result. |
| Tariff code | Account or tariff details | Selects residential 1.1.1, residential 1.1.2 or small-business pricing. |
| Ft rate | Ft line or current authority notice | Multiplies the entered rate by total kWh for the billing period. |
| Actual total | Amount due on the bill | Shows the difference from the estimate so adjustments are easier to investigate. |
The estimate excludes arrears, deposits, discounts, solar credits, meter multipliers and other account-specific adjustments.
Decision checklist
A three-minute high-bill check
Use the result as a reconciliation tool, not merely a prediction.
- 01
Confirm that the start and end meter readings produce the same kWh shown on the bill.
- 02
Match the provider, customer type, tariff code and Ft period before comparing totals.
- 03
Check whether the difference is explained by arrears, a deposit, a discount or another adjustment.
- 04
If the reading or tariff still looks wrong, use the issuing authority’s bill history or service channel.
Method and limits
What this estimate means
Tiered energy charge + kWh × Ft + service charge, followed by 7% VAT.
- Included
- Residential and small-business normal tier rates, entered Ft, standard service charge and VAT.
- Not included
- TOU tariffs, demand charges, deposits, arrears, discounts, solar credits, meter multipliers and billing adjustments.
Before you decide
Use the result carefully
- 01
Choose MEA only for Bangkok, Nonthaburi or Samut Prakan; most other provinces use PEA.
- 02
Use the kWh reading and tariff code printed on the bill.
- 03
Match the Ft value to the billing period before comparing totals.
Primary references
Official and authoritative sources
Formula assumptions are reviewed against these sources. A linked source may be available primarily in Thai.
Questions
Common questions
What is Ft?
Ft is a fuel-adjustment component stated per kWh. It changes by billing period, so the calculator leaves it editable.
Should I select MEA or PEA?
Select MEA for bills issued in Bangkok, Nonthaburi and Samut Prakan. Select PEA for most other provinces. Always confirm the provider name printed on the bill.
How much does 1 kWh cost in Thailand?
There is no single price for every unit because residential energy charges use tiers. The calculator divides the complete estimate by total kWh to show the effective average for your scenario.
Why can the result differ from my bill?
Your tariff code, Ft period, meter dates, discounts, arrears or adjustments may differ from the assumptions entered.