Tokyo summer utility caps: checking extra charges

Before booking a Tokyo apartment for summer, ask whether “utilities included” means you pay a fixed amount or could owe more if you use too much. The agreement should say how much is included and how any extra charge is calculated.

For example, ¥15,000 a month might be the entire utility charge, with nothing more to pay. It might instead cover only the first ¥15,000 of use, leaving you to pay anything above that. Or it might be an estimate: the company will calculate your final charge from the actual utility bills. The kōnetsuhi guide explains these billing options.

A concrete example is Union Monthly’s customer-support policy: it does not charge separately for utilities unless use exceeds the company’s standard. You can therefore face an extra bill even when the listing says there is no utility charge. Ask how much use is included before comparing the price with a fixed-fee offer.

Suppose Apartment A includes a utility allowance in the rent. Apartment B costs ¥4,000 more for the same period, but its utility charge is fixed. If you owe ¥6,000 for extra use at A, it ends up costing ¥2,000 more than B. These are made-up prices, not Union Monthly’s rates.

The room’s gas supply changes the electricity allowance

Union Monthly’s detailed FAQ publishes separate electricity, gas and water standards by room layout. The table groups four layouts together: a studio (1R), one room with a separate kitchen (1K), one room with a kitchen and dining area (1DK), and two rooms with a kitchen (2K). For this group, the electricity limit is ¥8,500, or ¥13,600 in a home with no gas supply. Gas is listed separately at ¥5,100 for a room that has it; water is ¥3,400. These are that company’s published standards, not typical Tokyo household bills. Check which dates the allowance covers and how the agreement says the company will calculate extra charges.

The electricity allowance is ¥5,100 higher for a home without gas. For example, an ¥11,000 electricity bill is ¥2,500 above the allowance for a home with gas, but ¥2,600 below the allowance for a home without it. Use the row for your apartment when checking an excess charge. Don't transfer unused gas or water allowance to electricity unless the agreement allows it.

Read the unit attached to the allowance

An allowance in yen limits the cost included in your rent. Check whether it covers electricity alone or electricity, gas and water together. An allowance in kilowatt-hours, written as kWh, limits how much electricity is included. For that kind of allowance, you also need to know the charge for each extra kWh.

Look for words such as 上限 (upper limit), 超過分 (excess portion) and 実費精算 (settlement at actual cost). Ask for an explanation in a language you understand rather than relying on an isolated translation. If the English quote says “flat” but the agreement allows extra charges, ask the company which one is correct and have it update the documents before you sign.

An example question is:

Is this the full utility charge, or could I owe more for extra use? How much is included, which utilities does that cover, and for which dates? How would you calculate any extra bill?

Work through a yen-cap example

Suppose an agreement charges ¥15,000 each month, covers combined utility bills up to that amount, and bills the excess at actual cost. Assume there is no refund for lower use. These terms are made up for the example; your agreement may work differently.

Here, ¥15,000 is the minimum you pay, not the maximum. The bill can rise when use exceeds the allowance.

If your agreement returns money when you use less or limits the total you can be charged, include that when working out what you would pay.

With a kWh cap, ask for the rate

Suppose your agreement includes 300 kWh and you use 380 kWh. You have used 80 kWh above the allowance. If the agreement charges ¥40 for each extra kWh, that adds 80 × ¥40 = ¥3,200. These are example figures. Don't substitute a rate from an internet article if your contract uses another calculation.

Ask whether the rate for extra use includes tax and whether any other charges will be added. For example, TEPCO's tariff page lists a basic charge as well as charges for electricity used. It also adds or subtracts a fuel adjustment as fuel prices change. Multiplying your use by one advertised kWh rate may therefore leave out part of the bill.

Also ask how an allowance works for a partial month. For a stay beginning in late July, does the allowance reset on August 1 or when the meter is read? The agreement should explain whether you receive the full monthly allowance, an allowance reduced to match the number of days, or one allowance for your entire stay.

Check the apartment as well as the clause

If you'll work at home, tell the company that when asking about likely usage. Request recent bills from the same unit if available, and ask about the air conditioner, curtains and any known cooling problems. A previous bill can help you estimate costs, but your use and the weather may be different.

Don't try to control a bill by tolerating unsafe heat. If the room won't cool properly, contact the company promptly and keep a record of the problem and response.

If an extra invoice arrives

Ask the company to show which contract clause allows the extra charge and which dates the invoice covers. Request the meter readings or utility bills used to calculate it, so you can check that the right allowance was applied. Any utility payments you have already made for that period should also appear in the calculation. If you think the amount is wrong, explain why and ask whether the original payment deadline still applies while the company checks it.

For example, point out if the invoice uses the allowance for a home with gas but your apartment has none. Keep the corrected invoice and the company's reply together.