Switching Electricity Providers in Japan: You're Not Stuck With the Default

The name on your electricity bill was probably never a decision you made. When you moved in, the regional default utility got turned on for you, often as part of move-in setup handled by the real estate agent, and for a lot of renters that's also where the story ends. Nothing about that is wrong. It's also not the only option, and hasn't been for a decade — you're just one of many renters who never had a reason to look past the name already on the bill.

What actually changed in 2016

Japan's electricity retail market became fully liberalized on April 1, 2016, opening low-voltage contracts (the category almost every household and small apartment falls into) to any registered retailer, not just the regional incumbent utility. That's confirmed directly on the government's own liberalization overview page. The physical side of the system didn't change: the wires, the transmission and distribution company, and the technicians who show up for an actual outage stay the same no matter who bills you. Switching changes who you pay and what plan you're on, not how the electricity reaches your apartment.

Hundreds of new entrants, referred to collectively in Japanese as shin-denryoku (新電力, literally "new power"), launched competing plans after liberalization. Not all of them lasted. A number of smaller new entrants have folded or exited since, and customers caught in that situation were shifted onto a fallback "last resort supply" tariff from the regional grid company rather than losing power outright — a real, if uncommon, downside worth knowing about before you chase the newest or cheapest-looking new entrant on a comparison site.

What switching actually involves

You apply with the new provider by phone or an online form, giving them your address, your current provider's customer number (found on a recent bill), and a start date. In most cases there's no scheduled outage. If your building still needs a smart meter installed, that swap typically takes around 15 minutes and doesn't usually require you to be home for it, according to multiple providers' own descriptions of the process.

One exception worth remembering: this hands-off process is for switching in place. If you're moving to a new address at the same time, that's two separate actions, not a single transfer: stopping the account at the old address yourself, and starting a new one at the new address. The "new company cancels your old plan for you" convenience only applies when you're staying put. Our moving-in checklist covers the same-week timing for starting electricity, water, and gas at a new address if that's the situation you're in.

Three snags that don't show up in Japanese-language guides

A Japanese mobile number, not just any number

Several providers' online sign-up and account verification steps assume you have a Japanese mobile number that can receive an SMS code or an automated call — a landline or an overseas number won't reliably work for that step. The exact wording differs by company, and it's usually buried in the sign-up flow rather than stated up front, so it's worth having a working Japanese SIM in hand before you start an application. If you don't have one yet, see our guide comparing home internet and mobile options for what that piece typically involves.

A Japanese-issued credit card, not always a bank account

Payment methods are not uniform across providers. Looop denki, one of the more visible new entrants, accepts credit card payment only from individual (non-business) customers, per its own sign-up process as described by multiple Japanese-language guides: no bank transfer, no convenience-store payment, for a regular household contract. Other providers, particularly the regional incumbents, more commonly offer direct debit from a Japanese bank account (口座振替) as an alternative. Whether a specific company accepts an overseas-issued Visa or Mastercard isn't reliably documented in English, and appears to vary by provider. Treat it as unconfirmed, and check the specific company's own sign-up page rather than assuming either way.

The cancellation fee on the plan you're leaving

Switching to a new provider is free. What can cost you is leaving your current plan early, if it came with a minimum contract period. That's a condition that's easy to end up on without noticing, if a landlord or agent set the account up for you in the first place. Comparison guides tracking these fees across new-power companies describe a wide range: many charge nothing at all, and among those that do, amounts in the low thousands of yen are common, with only a few providers charging significantly more. Treat any number you see on a comparison site as a starting point, not your actual fee. Check your own account page or a recent bill for the plan name, then confirm directly with your current provider whether that plan has a minimum term attached.

How to compare offers once those three are cleared

This guide isn't going to tell you a specific company is the cheapest — that depends on your household's usage pattern, your region, and which plans are running promotions this month, none of which this page can know. What's more durable is the set of questions worth asking about any plan you're comparing:

• Rate structure — a flat per-kWh rate versus a tiered structure where the per-unit price rises after a usage threshold. Tiered plans can look cheap at low usage and expensive once a household actually runs air conditioning or heating.
• Minimum contract term and cancellation fee — whether the new plan itself locks you in, separate from whatever fee your old plan might charge.
• Payment methods accepted — credit card only, bank direct debit, or both, and whether an overseas-issued card is an option.
• How long the company has operated — newer entrants can offer genuinely better rates, but the "last resort supply" scenario above is a real trade-off worth weighing against a longer-established name.

Most providers, new and incumbent alike, run their own online rate simulators where you enter the usage and amount from a recent bill to get an estimate specific to your household — a more reliable number than any general comparison article, this one included, can give you.

What this guide doesn't cover

This page doesn't calculate what you'd personally save by switching, doesn't recommend a specific company or plan, and doesn't cover gas or water, which run through separate liberalization rules and separate providers. If you want an exact comparison, the usage figures on your last two or three electricity bills, run through a couple of providers' own simulators, will tell you more than any general guide can.

Related reading

• Moving-in checklist for your first week — where starting electricity service in the first place fits alongside water, gas, and internet.
• Home internet in Japan compared — the same English-support and no-long-lock questions, applied to getting online instead of getting power.
• What a convenience store can actually do — where the barcoded payment slip an electricity bill often arrives as actually gets paid, in cash, before direct debit is set up.

Sources

All sources below were checked on 2026-08-21.

• Agency for Natural Resources and Energy (METI) — "What does liberalization of the electricity market mean?" (official; confirms full liberalization from April 1, 2016 and that any registered retailer can now sell to low-voltage/household customers): enecho.meti.go.jp
• Agency for Natural Resources and Energy (METI) — "How can I switch my provider?" (official English-language switching guide): enecho.meti.go.jp
• sorasapo.com — overview of smart meter exchange timing and outage likelihood during a provider switch: sorasapo.com
• cracierge.co.jp — Looop denki's payment method options, confirming credit-card-only for individual customers: cracierge.co.jp
• おうち省エネガイド — comparison of cancellation fees across new-power (shin-denryoku) companies: ouchishoeneguide.com
• Japan Compliance — "Entering Japan's Liberalised Power Market," on incumbent market share and new-entrant exits since liberalization: japancompliance.com

Specific rates, contract terms, payment methods, and any given provider's cancellation fee were not individually verified beyond the pages above and change over time. This article describes the switching process generally; it is not a recommendation of any specific provider, and no link on this page is an affiliate link.