Power networks/Japan
| Japan (JP) | |
|---|---|
 _(Japan_centered).svg) | |
| References | |
| OpenStreetMap | 382313 382313 |
| Wikidata | Q17 |
| Wikipédia | Japan |
| Country characteristics | |
| Continent | Asia |
| Population | 123,802,000 |
| Area | 377,972 km2 |
| GDP | 4231.1 B$ |
| Language(s) | Japanese |
| Electrical Network | |
| Generation capacity | 220,775 MW (OSM) |
| Power line length | 74,369 km (OSM) |
| Frequency | ... Hz |
| Transmission lines voltages (kV) | 11 - 15.4 - 20 - 22 - 25 - 30 - 33 - 44 - 60 - 66 - 77 - 100 - 110 - 132 - 154 - 187 - 200 - 220 - 250 - 275 - 500 - 660 |
| Data from Wikidata (last update 2025-09-13) and OpenInfraMap (last update 2025-09-13) | |
This page has been created through the power networks country page template. Check the template page for more information on how to complete it.
High-voltage Electrical Network
State of the map
TODO : Take a JOSM screenshot of the country current power network. More info in power networks country page template
Network description
Voltages and frequency
Frequency : TODO Hz
| Network | Voltage | Comments | Appearance |
|---|---|---|---|
| Transmission | 11000 | ||
| Transmission | 15400 | ||
| Transmission | 20000 | ||
| Transmission | 22000 | ||
| Transmission | 25000 | ||
| Transmission | 30000 | ||
| Transmission | 33000 | ||
| Transmission | 44000 | ||
| Transmission | 60000 | ||
| Transmission | 66000 | ||
| Transmission | 77000 | ||
| Transmission | 100000 | ||
| Transmission | 110000 | ||
| Transmission | 132000 | ||
| Transmission | 154000 | ||
| Transmission | 187000 | ||
| Transmission | 200000 | ||
| Transmission | 220000 | ||
| Transmission | 250000 | ||
| Transmission | 275000 | ||
| Transmission | 500000 | ||
| Transmission | 660000 |
These values are used for quality control in some OSM tools. If you change them, please also report it by creating an issue on GitHub. More information about country voltage QA.
Operators
| Operator | Network | Wikidata | Website | Wikipedia | Operating area | Information | Label | Taginfo |
|---|---|---|---|---|---|---|---|---|
| TODO | {{{network}}} | Q99999 WhatLinksHere |
TODO | TODO | operator=TODOoperator:wikidata=Q99999
|
operator=TODO |
Interconnections
| Neighbour country | Structure name | Year of commissioning | Technology | Voltage | Local end | Foreign end | OSM circuit | Notes |
|---|---|---|---|---|---|---|---|---|
| TODO | xxx |
Planned projects
- ...
Data Sources
| Source | License | Date | Suitable for OSM | Notes |
|---|---|---|---|---|
| J-Power Group Integrated Report | ? | 2023 | ? | - |
| OSW Project Areas & Transmission Lines (Includes capacity data) | ? | ? | ? | - |
| OCCTO - Organization for Cross-regional Coordination of Transmission Operators - (Includes capacity data) | ? | ? | ? | - |
Network statistics
Japan has 14571 power plants totalling 220,775 MW and 74,369 km of power lines mapped on OpenStreetMap (from OpenInfraMap, last update 2025-09-13)
Power line
| Power Lines Voltage | Length |
|---|---|
| < 10 kV | 92 km |
| 10 kV - 25 kV | 156 km |
| 25 kV - 52 kV | 790 km |
| 52 kV - 132 kV | 28,017 km |
| 132 kV - 220 kV | 13,091 km |
| 220 kV - 330 kV | 11,179 km |
| 330 kV - 550 kV | 8,399 km |
| > 550 kV | 423 km |
| No voltage tagged | 12,217 km |
| Total | 74,369 km |
Electricity generation
Mapping process and community
Mapping success stories
TODO : Success stories are designed to highlight important contributions. Have you significantly improved the cartography of a country (added a new line, a power station, etc.)? Don't be shy, let us know below.
- Example : NAME [DATE YYYY-MM-DD]: My success stories in words.
Encountered problems and places to improve
- ....
Use of mapping strategies
TODO : Mapping strategies refer to Power networks/Guidelines#Mapping strategies. They are used for a methodical improvement of the OSM database. Once you have fully applied a strategy in this country, you should add or update your name, the date, the strategy, and a comment below. This way, other users can see whether it is worthwhile to carry out further investigations.
- Example : Search for "Unfinished major power lines" - last time applied by XXX [2025-MM-DD]
- .... - last time applied by XXX [2025-MM-DD]