Japan Electricity Cost Calculator

Estimate your annual electricity cost on your region's standard plan (従量電灯) — and see what switching providers typically saves — in English.

I know my kWh
I only know my ¥ bill
Estimate by household
kWh / month
Estimated annual cost ·
—
—
Line (monthly)Amount
Not included: 燃料費調整額 (fuel cost adjustment). This per-kWh surcharge/discount changes every month with global fuel prices and can be positive or negative, so including a fixed figure would be false precision. Your real bill will move up or down with it. See the bill explained.

What switching could save

—

A typical range only — actual savings depend entirely on your usage profile and the plan you pick; heavier users tend to save more. The renewable levy (再エネ賦課金) never changes, whoever you switch to.

Switching options

Two ways foreign residents usually go about it:

  • An English-friendly supplier. A few newer suppliers run an English signup flow — no construction, no outage, same grid. Worth it if reading Japanese sign-up forms is the blocker.
  • Compare everything at once. A comparison portal ranks plans across suppliers for your usage, so you're not signing up blind.

How to judge "English-friendly" · How switching works

Estimates use each region's standard 従量電灯 tariff (2025–2026, tax-included), assume steady monthly usage, and exclude 燃料費調整額. Confirm your own plan and rates with your provider.

Understand your electricity

How to switch · Your bill explained · Lower your amp contract · English-friendly companies · Electricity + gas sets · FAQ