Your condo electricity bill, and the rate your landlord invented

Bangkok’s official residential electricity tariff works out at roughly four baht a unit. A great many condo buildings hand their tenants an invoice at seven, or eight, or nine. The markup is real, it is well known, and whether it is actually unlawful turns on a single fact about your landlord that almost nobody thinks to establish.

What electricity actually costs in Bangkok

There is no such thing as “the” Bangkok electricity rate, and that is the first thing to understand, because a landlord who quotes you one flat number has already told you they are not passing on a cost. The Metropolitan Electricity Authority bills households on a progressive tiered tariff: the first units of the month are cheap, later ones cost more. On top of the tiers sits the Ft, a fuel adjustment charge revised every four months by the energy regulator. On top of everything sits 7% VAT.

Work all of that through for a normal air-conditioned condo — the kind of household that crosses 150 units a month and therefore sits in MEA’s higher residential band — and the blended, all-in, out-the-door figure lands at roughly 4 to 4.2 baht a unit. For the May to August 2026 period, with the Ft set at 16.23 satang, MEA’s stated average all-in residential tariff was about 3.95 baht per unit. The Ft moves, so that number will not be exactly right next quarter. You can look up the live value on MEA’s own tariff pages, and if you are about to have an argument with a landlord it is worth doing so.

The arithmetic of a flat rate

Now put the real number beside the invoice. A studio or one-bedroom in Bangkok, with the air conditioning running the way it has to run, will typically draw somewhere between 150 and 400 units a month, climbing steeply in the April heat. Take a mid-range month of 250 units.

At the true delivered cost of around 4.1 baht, that electricity cost roughly 1,025 baht. Billed at a flat 7 baht a unit, you pay 1,750 baht. The gap is about 700 baht a month — call it eight thousand baht a year, quietly, on a line item nobody reads. At 8 or 9 baht a unit, which some buildings charge, it is worse.

The landlord’s defence, which is not entirely empty, is that the margin covers common-area power, meter reading and administration. Whether it covers those things or funds a holiday is not something we can tell you from here. What we can tell you is the size of the gap, and that most tenants have never calculated it.

Whether the markup is legal depends on your landlord, not your building

Here is where it stops being a grumble and becomes a question with an answer. Under the residential-leasing regulation in force since 4 September 2025, a landlord who rents out three or more residential units as a business may not include a contract term charging utilities above the official government tariff. Such a term is void, and the Consumer Protection Act backs the regulation with penalties reaching a year’s imprisonment and a fine of up to 200,000 baht. A flat seven baht a unit plainly exceeds a four-baht tariff.

And a private owner renting out the single condo they happen to own is not covered by that regulation at all. The same seven-baht invoice, in the same building, on the same day, is a prohibited contract term for one tenant and an unattractive but arguable private arrangement for their neighbour. We have written separately about how that three-unit threshold reshapes everything before you sign a lease; utilities are where it bites monthly rather than once.

Two cautions on the law, because this is the part people get wrong. Analysts differ on whether the rule mandates strict billing at cost or simply caps charges at the official tariff — the practical effect is much the same, but the tariff-cap framing is the safer reading. And we found no evidence that Thailand’s energy regulator polices landlord resale margins. The lever here is consumer-contract law, not energy law, and the door it goes through is the OCPB.

Reading your bill to find out which one you are

You can settle this in about thirty seconds with the invoice in your hand.

If you hold a direct MEA account in your own name, your bill or e-bill carries a customer account number and a meter number, and it shows its working: the tiered rate, a separate Ft line, and 7% VAT applied to the subtotal. The effective rate will land near four baht. You can look the account up in MEA’s own app or e-service.

If you are on a building sub-meter — which is most condo tenants — you get an invoice generated by the building or the landlord, showing units consumed multiplied by a single flat rate, with no tier, no Ft and no VAT breakdown, because there is nothing to break down. The master MEA bill is in the landlord’s or the juristic person’s name. That flat rate is the markup, in plain sight.

What you can actually do about it

Before signing, the answer is easy and nobody does it: ask what the per-unit rate is and get it written into the lease. A landlord who will not put the rate in writing has told you something. If the rate is above the tariff and the landlord runs three or more units, you now have a specific, citable objection rather than a vague sense of being fleeced.

Once you are living there, keep the evidence. The 2025 regulation requires covered landlords to issue a written invoice at least three days before payment is due; keep every one. Photograph the sub-meter reading on the same day each month so the consumption side is not in dispute either. Then compute what the same units would have cost at MEA’s current tariff, and you have the whole argument on one page.

The escalation that fits is the Office of the Consumer Protection Board, hotline 1166, which handles unfair contract terms and is the body behind the leasing regulation. MEA’s call centre, 1130, will confirm the official tariff and tell you whether an account exists in your name, and that is genuinely useful — but MEA’s contract is with whoever holds the master meter, so do not expect it to arbitrate between you and your landlord. Go to the OCPB with the invoice, the meter photographs and the tariff calculation. Go to MEA to establish the facts you will bring with you.

Quick answers

What is the real electricity rate in Bangkok?

There is no single rate. MEA bills a progressive tier, plus an Ft fuel charge revised every four months, plus 7% VAT. For a typical condo it blends out near 4 baht a unit; the stated average for May to August 2026 was about 3.95.

Can my landlord legally charge 7 or 8 baht a unit?

If they rent three or more residential units as a business, no — charging above the official tariff is a prohibited contract term under the regulation in force since 4 September 2025. If they own the single unit you live in, they are outside that regulation and the position is much less clear.

Why does my bill jump in April?

Air conditioning dominates the bill and April is the hottest month. Because the residential tariff is progressive, the extra units cost more per unit than the first ones, so the bill climbs faster than the consumption.

Should I be paying the common-area fee?

Normally not. Under the Condominium Act it is the unit owner’s obligation, and in a standard Bangkok rental the landlord keeps it. If it appears on your invoice, ask why, and check the lease.