Setting Up Electricity, Gas and Water in a Japanese Home

A practical walk-through of starting electricity, gas and water service in a Japanese home, including supplier choice, gas visits, voltage, and common ways to pay bills.

Published October 20, 2026 at 1:36 PM JST | By Tokyo Paul

Quick answer: To start utilities in a Japanese home, you usually contact each provider with your address and move-in date, by phone or online. Electricity and water can often be started with a short notice, while gas typically needs a staff visit to open the line safely. Mains power is 100 V, at 50 Hz in eastern Japan and 60 Hz in the west. Bills can often be paid by card or at a convenience store.

The three services at a glance

Moving into a Japanese home means arranging three main services: electricity, gas and water. Each has its own provider and its own procedure, and they do not always share a single account. Your landlord or the property manager is the best first contact, since they can tell you which companies serve the building, whether gas is city gas or bottled propane, and whether any services are already active.

Plan to contact each provider a week or more before the move-in date, and earlier during busy moving periods. Have your address, the move-in date, your name as it appears on your contract and a phone number that can receive calls. If you do not speak Japanese, check whether the provider offers English guidance, or ask a friend, a colleague or the property manager to help with the first call.

Electricity: choosing a supplier

Japan opened its household electricity market to competition in April 2016. Reference sources report that domestic and small business customers could then choose from over 250 supplier companies, although many suppliers sell mainly in large cities and local conditions vary. Because of this, a new resident may be able to pick from several suppliers rather than only the regional utility, depending on the area.

Start by asking the landlord whether the building has any existing arrangement, then compare monthly basic charges, per-unit prices and contract terms. Look at any minimum contract period and early-termination terms. Many residents find that the simplest way is to register with the regional supplier first, then switch later if a better plan appeals. Keep in mind that rules and offers change, so check the current details with the supplier. Write down the supplier's customer number once you have it, since you will need it for questions, payments and the final bill.

Voltage, frequency and plugs

Japan's standard household voltage is 100 V, and reference tables also list 200 V for certain uses. Frequency differs by region: eastern Japan, including Tokyo, uses 50 Hz, and western Japan, including Osaka and Kyoto, uses 60 Hz. The two grids are linked only by conversion equipment of limited capacity, which is why the difference still exists.

Plug types A and B are listed for Japan, but most sockets accept only Type A plugs, the two flat pins without a ground pin. Appliances from countries using 220 to 240 V can be damaged by 100 V power or may simply not run properly, so check the label before plugging anything in. Many chargers handle a wide range of voltage, while heaters, kettles and hair dryers often do not.

Gas: city gas or propane

Gas in Japanese homes comes either from a piped city gas network or from propane delivered in cylinders. The type affects which appliances you can use, since a cooker or water heater is usually made for one gas type. Check which one applies to your address before buying a gas appliance, and ask the landlord whether the existing equipment belongs to the property or to you.

Starting gas typically requires a staff visit, often called kaisen, where a technician opens the supply and checks that the appliances work safely. Someone usually needs to be present, so book an appointment as early as possible. Without this visit, the gas may be unavailable on your first evening. On move-out, you contact the provider again to close the account and arrange a final reading.

Water: a municipal service

Water in Japan is provided by municipalities, which, in principle, manage the water supply business under the Water Supply Act. Reference sources say that about 97 percent of people receive piped water from public utilities, that disinfection is mandatory, and that all households are metered. Drinking water quality is reported to meet Japan's own strict standards.

To start service, you normally notify the local water bureau of your move-in date. Municipal water bureaus generally have their own notification method, which may be a phone call, an online form or a paper form, so check your local bureau's page. A meter reading is normally taken when service begins. Tariffs are set under municipal oversight, so the exact rates depend on where you live. Ask the water bureau or landlord how bills are issued, because some buildings include water in the rent or common charges.

Paying bills

Utility bills are commonly paid by bank transfer, credit card or at a convenience store with a printed slip, depending on the provider. Setting up automatic payment can save time, but it often needs a Japanese bank account and some paperwork, so keep slips and receipts until the account is active. If you receive a slip first, check the due date and the payment methods listed on it.

Bills arrive monthly or every two months depending on the service, and amounts rise in the heating and cooling seasons. Keep an eye on the first few bills, and ask the provider if a figure looks unusual. If you are a student or short-term resident, ask whether a prepaid or shared-house arrangement suits you better, as some properties already include utilities in a fixed charge.

Moving out and checking the details

When you leave, tell each provider your move-out date and ask how the final bill will be settled. Take a photo of the meters if the provider allows self-reading, and confirm the address where the last bill should be sent. Landlords may check the room at the end, so keep the keys and any equipment manuals together.

If you ever suspect a leak, a gas smell or an electrical problem, contact the provider's emergency line or the property manager at once, and follow local safety guidance. This guide shares general information; rules change, so confirm details with the official agency or provider before you act. Offers differ by area, and a short call to the landlord often clears up most questions about who provides what in your building.

Frequently Asked Questions

What voltage does Japan use at home?

Japan's mains voltage is 100 V, with 50 Hz in eastern Japan and 60 Hz in the west. Most sockets take only two-pin Type A plugs. Check the label on every appliance and charger before you plug it in, and use a suitable adapter or transformer if your device is made for a different voltage.

Do I have to be home when the gas is turned on?

Usually yes. Starting gas typically involves a staff visit to open the supply and check the appliances, so someone needs to be present. Book the appointment early, since popular times fill up. Ask the provider about the arrival window and what the visit covers.

Can I choose my own electricity company in Japan?

In many areas, yes. Japan opened household electricity retail to competition in April 2016, and reference sources report that over 250 suppliers were available then, though many sell mainly in cities. Compare monthly charges, per-unit prices and contract terms, and check current details with each supplier.

Want to go deeper? Tokyo Paul's book Building a Life in Japan is available on Amazon.

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