Value Village ／ Everyday know-how
This answer is a draft. It stays unpublished until legal review and source verification are complete.
Electricity, gas and water bills in Japan arrive as slips or app notifications with a structure that new residents rarely decode — a base charge, tiered usage, a fuel adjustment that swings monthly, and a renewable levy. Understanding the tiers is where the savings are.
| Line | What it is | Typical figure (Tokyo area, 2025) |
|---|---|---|
| Basic charge (基本料金) | By contracted amperage (10–60 A); higher amperage lets you run more at once | 30 A ≈ ¥900/month; 40 A ≈ ¥1,200 |
| Tier 1 (第1段階) | First 120 kWh | ≈ ¥30/kWh |
| Tier 2 | 121–300 kWh | ≈ ¥36/kWh |
| Tier 3 | Over 300 kWh | ≈ ¥40/kWh |
| Fuel cost adjustment (燃料費調整額) | ± per kWh, changes monthly with fuel import prices; can be negative | ± ¥0–5/kWh (was much higher in 2022–23) |
| Renewable levy (再エネ発電促進賦課金) | Per kWh, set annually | about ¥3.5–4/kWh (FY2025) |
| Total for a 2-person flat | 250–350 kWh/month | ¥8,000–12,000; more in Jan–Feb and Aug |
[Verify] Tier prices and levies with TEPCO (or your regional utility) and the Agency for Natural Resources and Energy; the FY2025 renewable levy with METI.
Three tiers, a base charge, a monthly fuel adjustment and a levy. The unit price for your last kilowatt-hour can be a third higher than for your first.
It costs more every month and lets you draw more — useful for a family, wasted for one person. 30 A suits most single or two-person flats if appliances are not all run at once.
Check the fuel adjustment line — in 2022–23 it added thousands of yen for the same usage. It falls too.
LP gas is typically 2–3 times city gas and is priced by the supplier. Ask which a rental has before signing.
Staying under 300 kWh avoids tier 3: air conditioner at 28°C with a fan, kotatsu or floor heating instead of heating the whole room, LED bulbs, and a filter-cleaned air conditioner (see those articles) are where the reductions are, not in sitting in the dark.
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https://www.enecho.meti.go.jp/category/electricity_and_gas/electric/
https://www.enecho.meti.go.jp/category/saving_and_new/saiene/kaitori/surcharge.html
https://www.waterworks.metro.tokyo.lg.jp/tetsuduki/ryokin/
⚠️ Editorial note: the source URLs above were identified by search. Our working environment cannot reach go.jp domains, so the contents have not been checked against the text. Verify every source before publication and record who checked it and when.
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