Electricity Cost Japan is a free English-language calculator and guide for foreign residents trying to make sense of their electricity bill (電気代) and whether switching providers is worth it.
How we source our numbers
Every regional tariff (基本料金 / 最低料金 and the three usage tiers) and the national 再エネ賦課金 rate is drawn from the utilities' own 2025–2026 pages or multiple corroborating sources, recorded with dated source comments in our data files. We exclude the monthly 燃料費調整額 on purpose — it swings every month, and inventing a figure would be false precision.
Independence
This is an independent project, not affiliated with any electricity provider or government body. It is informational only and not financial advice.
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