How Many Baht Per Unit? 2026 — Home / Rental / Business / Farm
The per-unit price of electricity (THB/kWh) for the current Sep–Dec 2026 period, broken down by user type — with the residential progressive tiers, tenants' legal rights on rental rooms, and a real worked bill. Sourced from the ERC/PEA/MEA.
Electricity in Thailand for the current period (Sep–Dec 2026) is collected at an all-class average of 3.86 THB/unit (including the Ft of 0.1623 THB/unit, before 7% VAT). That is a system-wide figure, not the per-unit price any single home pays: homes are billed on progressive tiers — the more you use, the more the top units cost. For rental rooms / dormitories the OCPB (สคบ.) 2025 law caps the rate at 4.88 THB/unit, so a landlord cannot charge more (see the rental/dorm electricity law 2026). Small-to-medium businesses pay around 4.18 THB/unit, and ordinary farms pay 3.70–4.15 THB/unit (see agricultural electricity rate 2026). The tables and worked bill below are sourced from the ERC/PEA/MEA. See the full combined tariff on the current electricity tariff page and the big picture in the Thailand electricity guide.
Price Per Unit by User Type (Sep–Dec 2026)
Figures are in THB per unit (kWh) and include the current-period Ft of 0.1623 THB/unit, but exclude 7% VAT (add about 7% VAT for the final figure on your bill).
| User type | Rate (THB/unit) | Note |
|---|---|---|
| Residential / home (Type 1) | 3.70–4.15 (all-class avg 3.86) | Progressive tiers; top units cost more. No demand charge. |
| Rental room / dorm / condo | ≤ 4.88 (OCPB legal cap) | A utility meter pays the home rate; a landlord may not charge above 4.88 (OCPB 2025 law). |
| Small–medium business (Type 2–3) | ≈ 4.18 | Shops, offices, commercial buildings — flat rate; mid-size can opt into TOU. |
| Agriculture / farm | 3.70–4.15 (ordinary meter) | Ordinary farms pay the home rate; the lower Type-7 pumping tariff is for registered groups only. |
* All figures include the current Ft of 0.1623 THB/unit but exclude 7% VAT. The ERC adjusts Ft every ~4 months — see the Ft history table for past periods.
† The 4.88 THB/unit rental cap follows the OCPB (สคบ.) 2025 contract-control notification on residential-building leasing, which limits landlords to billing tenants no more than 4.88 THB/unit with no profit on power (an all-in figure) — and from the Sep-2026 bill cycle the NEPC's first-200-units ≤3.00 THB measure pushes a landlord's true utility cost even further below this cap. Do not compare that 3.00 THB directly with the 4.88 or 3.86 THB in this table, though: the announced 3.00 THB is an energy rate only and excludes Ft, the monthly service charge and 7% VAT, so a home using exactly 200 units pays more than 3.00 THB/unit all-in. Line-by-line build-up and who gets the right: the 200-units-at-3-THB tenant page.
Sep–Dec 2026 announced, then revised on 13 Aug 2026: the all-class average falls from 3.95 to 3.86 THB/unit (Ft unchanged at 0.1623; base tariff down to 3.69) — next update when the ERC announces the Jan–Apr 2027 Ft (typically late December).
How Many Baht Is 1 kWh in 2026?
1 unit of electricity (1 kWh) in the Sep–Dec 2026 period averages 3.86 THB across all customer classes (including the Ft of 0.1623 THB/unit, before 7% VAT). Homes are billed on progressive tiers — the more you use, the pricier each unit gets. Rental rooms/dorms have a legal cap of 4.88 THB/unit, and small–medium businesses pay around 4.18 THB/unit.
Residential Progressive Tiers (Type 1)
Homes are not billed at one flat rate — they use a "tiered" structure where extra units cost more as you use more, split into two groups by monthly usage. The figures below are base energy charges (before Ft 0.1623 and 7% VAT). **They are the new rates, in force from the September 2569 (2026) electricity bill onward**, per the ERC (กกพ.) resolution of 5 Aug 2569 — sources: the MEA Type-1 residential tariff table and the PEA September 2569 tariff document, checked 8 Sep 2026.
Use ≤ 150 units/month (Cat 1.1)
Low-usage homes are billed in steps from 2.3488 to 3.0000 THB/unit, plus a 8.19 THB monthly service charge — typical for small homes and low-use condos. If you are asking how few units make electricity free: the 50-unit right is no longer universal — see the real free-50-units rule.
Use > 150 units/month (Cat 1.2)
Most homes fall here: the first 200 units cost 3.0000, units 201–400 cost 4.1584, and units 401 and above cost 4.3583 THB each, plus a 24.62 THB monthly service charge.
Worked Example: A Home Using 300 Units/Month
A home using 300 units/month falls in Cat 1.2 (>150 units). Step by step:
- First 200 units × 3.0000 = 600.00 THB
- Units 201–300 (100 units) × 4.1584 = 415.84 THB
- Base energy subtotal = 1,015.84 THB
- Ft: 300 units × 0.1623 = 48.69 THB
- Monthly service charge = 24.62 THB
- Subtotal before VAT = 1,089.15 THB
- VAT 7% = 76.24 THB
Figures approximate the MEA/PEA Sep–Dec 2026 rates; an actual bill may vary slightly by area and service charge. See the detailed TOU rate schedule for time-of-use customers. Note: the Type 1.2 monthly service charge used to be 38.22 THB before the January 2023 (2566) billing cycle, when ERC resolution 51/2565 reduced it; it now stands at 24.62 THB, equal for both MEA and PEA. If you see 38.22 elsewhere, it is pre-2023 data — details in PEA vs MEA: is the bill different?
PEA (Provincial) vs MEA (Metropolitan): Does the Per-Unit Rate Differ? — Updated 2026
People often wonder which “electricity authority” bills them and whether the rates differ. The short answer: **the per-unit energy rate is one nationwide base tariff** — what differs is the service area and some service charges:
Who serves which area — MEA (Metropolitan Electricity Authority) covers the 3 metro provinces: Bangkok, Nonthaburi and Samut Prakan. PEA (Provincial Electricity Authority) covers the rest of Thailand. Your bill shows which authority issues it, or you can tell from your address.
The per-unit rate is the same — the base energy charges (residential tiers and every user-type rate) use the same figures under both PEA and MEA, and the Sep–Dec 2026 Ft of 0.1623 THB/unit applies identically to both. So the per-unit price in Bangkok and in the provinces is very close.
Where they differ — the main differences are in some monthly service charges and practical details (payment channels, contact numbers, meter-application steps), not the price per unit. Contact PEA 1129 (provinces) or MEA 1130 (metro) for matters specific to your area. Check the latest rates and Ft period at erc.or.th (ERC). For the full side-by-side, read PEA vs MEA — is the electricity bill different?
Whether your per-unit price is cheap or expensive depends on the Ft (adjusted every 4 months) and how much you use. The single biggest power draw in most homes is the air conditioner — see how many baht per hour an aircon costs once you multiply by the per-unit rate to estimate a real bill. If your home or business uses a lot of power during the day, solar cuts the units you buy from the grid (units you self-generate pay no Ft). Estimate your savings in the solar calculator, or understand where the Ft comes from in what the Ft is.
About this page
Compiled by the CapSolar team, led by Frank Lee (Founder). Every per-unit rate and Ft figure is cross-checked against official sources (ERC/PEA/MEA). This page is updated each time the ERC announces a new Ft period (every ~4 months). Spot an error? Let us know.
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