Setting Up Utilities & Internet in Japan: Electricity, Gas, Water & Fiber WiFi
By Ibuki — Affarah Friendly Homes · 2026-07-23
Short answer: When moving into a private rental in Japan, utilities are rarely included in the rent. You must activate electricity, water, and gas on or before move-in day. City gas requires an in-person appointment for safety verification, while electricity and water can often be activated online or via post cards. Home internet takes 2 to 4 weeks for fiber installation, making temporary 5G plug-and-play routers ideal for immediate connectivity.
1. Activating Electricity & Water
Electricity (Denki - 電気)
In Tokyo and Chiba, electricity deregulation allows you to choose your provider (e.g., TEPCO or deregulated providers like Looop Denki).
- Activation: Can be completed online 3-5 days before move-in. On arrival, turn on the main breaker switch on the breaker panel (usually located near the entrance or bathroom).
- Payment: Pay via automatic credit card deduction, bank transfer, or paper vouchers at convenience stores (7-Eleven, Lawson, FamilyMart).
Water (Suido - 水道)
Water is managed by municipal utilities (e.g., Tokyo Metropolitan Bureau of Waterworks).
- Activation: A paper postcard (Suido Shiyo Kaishi Shukensho) is usually left hanging on the kitchen faucet or mailed to the unit. Fill out your start date and mail it back, or submit online.
- Billing: Billed bimonthly (every 2 months).
2. Setting Up Gas (Toshi Gas vs. LP Gas)
Gas is essential for hot water heating, showers, and gas stove cooktops.
| Gas Type | Infrastructure | Cost Profile | Activation Rule |
|---|---|---|---|
| City Gas (Toshi Gas - 都市ガス) | Piped underground directly to building | Standard lower rates | Requires in-person technician visit to ignite pilot light. |
| Propane Gas (LP Gas - プロパン) | External propane tanks installed outside | ~20-40% higher monthly cost | Requires in-person technician visit to ignite pilot light. |
Crucial Step: You must be present at the apartment during the 15-minute gas turn-on inspection. The technician tests for safety leaks before unlocking the line.
3. Expat Home Internet Options (Fiber vs. 5G)
💡 Bridging the Fiber Internet Gap:
In Japan, fiber optic lines (Hikari) typically require 2 to 4 weeks for technician appointments and landlord approvals. If you need immediate high-speed connectivity for remote work and navigation while waiting for installation, activating an instant Japan eSIM like Saily or Yesim provides seamless data on day one.
Home internet setup in Japan varies drastically depending on contract length and installation tolerance:
| Option Type | Top Providers | Monthly Cost | Speeds | Setup Time & Terms |
|---|---|---|---|---|
| Fiber Optic (Hikari) | Flet's Hikari, NTT, Nifty | ¥4,180 - ¥5,500 | 1 Gbps - 10 Gbps | Requires landlord approval & 2-4 week installation. 2-year contract. |
| Multilingual Expat Fiber | GTN Hikari, Sakura Fiber | ¥6,980 - ¥7,678 | 1 Gbps | Full English support & bilingual customer service. |
| Plug-and-Play 5G/4G | Sakura Mobile Home WiFi, KEICALL | ¥6,980 - ¥7,678 | 100-300 Mbps | No installation needed. Shipped to your door, ready to plug in. |
4. Managing Mail & Bills Remotely: MailMate Integration
If you travel frequently for work or find Japanese mail notices challenging to translate, digital bill management services like MailMate receive, scan, and pay local utility bills on your behalf electronically.
For personalized help pre-coordinating utility timelines prior to your move-in date, consult your Affarah bilingual rental advisor.
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