- Clean firm
- Wind & solar
- Storage
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Wind & solar
- Storage
- Operating
39 assets
39 assets. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Not on this map: 1 project: placed by county or state, a license that withholds the site, or a stage the map draws no dot for (withdrawn, cancelled, frozen or not stated). Each is in its tab below.
4 outside this view, drawn where they are: zoom out to see them.
J-Power
Power plant owner
Key facts
Power plant owner · 9,109 MW- Capacity held
- 9,109MW
- Assets
- 39
- Projects
- 1
- Headquarters
- Chūō, Japan Source: Wikidata
- Website
- jpower.co.jp Source: Wikidata
- Listed
- Tokyo Stock Exchange: 9513 Source: Wikidata
- LEI
- 549300KMHPUAQI8VEH90 Source: Wikidata
- Wikipedia
- English article Source: Wikidata
- Parent
- No parent recordedNo parent recordedLike 48,118 of 50,271 companies here. Why
Projects 1
Capacity
0.01 GW
0.01 GW active
| Status | Name. Sort by name, A to Z | Type | MW, sorted descending. Sort by capacity, smallest first | State | Online. Sort by proposed online date, latest first | Source |
|---|---|---|---|---|---|---|
| Announced | Takahinatayama geothermal power plant -- | Geothermal | 15 MW | Japan | — | Global Energy Monitor — Global Integrated Power Tracker (unit-level power plants, eight technologies, all statuses) |
Assets 39
Assets
39
Capacity
9,109 MW
- Pumped hydro storage: 4,970 MW, 7 assets
- Storage: 3,250 MW, 30 assets
- Offshore wind: 857 MW, 1 asset
- Hydro: 32.0 MW, 1 asset
Operates 27 power plants · Owns 39 power plants
| Name. Sort by name, A to Z | Type. Sort by type, A to Z | Role. Sort by role, A to Z | MW, sorted descending. Sort by capacity, smallest first | State. Sort by state, A to Z | Share | Held by |
|---|---|---|---|---|---|---|
| Shintoyone hydroelectric plant | Pumped hydro storage | Operates and owns | 1,125 MW | — | 100.0% | J-Power |
| Okukiyotsu hydroelectric plant | Pumped hydro storage | Operates and owns | 1,000 MW | — | 100.0% | J-Power |
| Shimogo hydroelectric plant | Pumped hydro storage | Operates and owns | 1,000 MW | — | 100.0% | J-Power |
| Triton Knoll (Innogy) wind farm | Offshore wind | Owns | 857 MW | — | 25.0% | J-Power |
| Numappara hydroelectric plant | Pumped hydro storage | Operates and owns | 675 MW | — | 100.0% | J-Power |
| Okukiyotsu Daini hydroelectric plant | Pumped hydro storage | Operates and owns | 600 MW | — | 100.0% | J-Power |
| Okutadami hydroelectric plant | Storage | Operates and owns | 560 MW | — | 100.0% | J-Power |
| Tagokura hydroelectric plant | Storage | Operates and owns | 400 MW | — | 100.0% | J-Power |
| Ikehara hydroelectric plant | Pumped hydro storage | Operates and owns | 350 MW | — | 100.0% | J-Power |
| Sakuma hydroelectric plant | Storage | Operates and owns | 350 MW | — | 100.0% | J-Power |
| Tedorigawa Daiichi hydroelectric plant | Storage | Operates and owns | 250 MW | — | 100.0% | J-Power |
| Nagano hydroelectric plant | Pumped hydro storage | Operates and owns | 220 MW | — | 100.0% | J-Power |
| Miboro hydroelectric plant | Storage | Operates and owns | 215 MW | — | 100.0% | J-Power |
| Otori hydroelectric plant | Storage | Operates and owns | 182 MW | — | 100.0% | J-Power |
| Sendaigawa Daiichi hydroelectric plant | Storage | Operates and owns | 120 MW | — | 100.0% | J-Power |
| Taki hydroelectric plant | Storage | Operates and owns | 92 MW | — | 100.0% | J-Power |
| Nanairo hydroelectric plant | Storage | Operates and owns | 82 MW | — | 100.0% | J-Power |
| Totsukawa Daiichi hydroelectric plant | Storage | Operates and owns | 75 MW | — | 100.0% | J-Power |
| Futamata Kochi hydroelectric plant | Storage | Operates and owns | 72 MW | — | 100.0% | J-Power |
| Tadami hydroelectric plant | Storage | Operates and owns | 65 MW | — | 100.0% | J-Power |
| Kuromatagawa Daiichi hydroelectric plant | Storage | Operates and owns | 62 MW | — | 100.0% | J-Power |
| Oshirakawa hydroelectric plant | Storage | Operates and owns | 59 MW | — | 100.0% | J-Power |
| Totsugawa Daini hydroelectric plant | Storage | Operates and owns | 58 MW | — | 100.0% | J-Power |
| Yugami hydroelectric plant | Storage | Operates and owns | 54 MW | — | 100.0% | J-Power |
| Misakubo hydroelectric plant | Storage | Operates and owns | 50 MW | — | 100.0% | J-Power |
| Akiha 3 hydroelectric plant | Storage | Operates and owns | 47 MW | — | 100.0% | J-Power |
| Akiha 1 hydroelectric plant | Storage | Operates and owns | 46 MW | — | 100.0% | J-Power |
| Nukabira hydroelectric plant | Storage | Owns | 44 MW | — | — | J-Power |
| Sameura hydroelectric plant | Storage | Owns | 42 MW | — | — | J-Power |
| Ashoro hydroelectric plant | Storage | Owns | 42 MW | — | — | J-Power |
| Owase Daiichi hydroelectric plant | Storage | Owns | 40 MW | — | — | J-Power |
| Nagayama hydroelectric plant | Storage | Owns | 39 MW | — | — | J-Power |
| Otsumata hydroelectric plant | Storage | Owns | 38 MW | — | — | J-Power |
| Yanase Saitama hydroelectric plant | Storage | Owns | 36 MW | — | — | J-Power |
| Akiha 2 hydroelectric plant | Storage | Operates and owns | 35 MW | — | 100.0% | J-Power |
| Nishiyoshino Daiichi hydroelectric plant | Storage | Owns | 33 MW | — | — | J-Power |
| Funagira hydroelectric plant | Storage | Owns | 32 MW | — | — | J-Power |
| Sakuma Daini hydroelectric plant | Hydro | Owns | 32 MW | — | — | J-Power |
| Komori hydroelectric plant | Storage | Owns | 30 MW | — | — | J-Power |
Sources GEM
Sources
- Global Energy Monitor — Global Integrated Power Tracker (unit-level power plants, eight technologies, all statuses)Global Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
Sources 2
Registers
2
Reuse terms
- 1 Open license
- 1 Open license, with credit
Latest read
2026-11-04
From its recordsSourcesThe registers behind this company's assets, projects and RFPs and the facts under its name; the company record itself is derived from them.
Sources
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View at source →
GEM ·
Global Energy Monitor — Global Integrated Power Tracker (unit-level power plants, eight technologies, all statuses)
Global Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License. · license
In-file notice, About sheet of Global_Integrated_Power_September_2026_V2.xlsb (the owner's download, read 2026-10-26 with pyxlsb 1.0.10; decisions log 2026-10-26): "Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License. (See the CC license for attribution requirements if sharing or adapting the data set.)" and "Please note records with a “TZ ID” in the Other IDs (unit/phase) column were partially or fully sourced from the TransitionZero, Solar Asset Mapper, August 2025. Copyright © TransitionZero, Solar Asset Mapper, August 2025. Distributed under a Creative Commons Attribution-Non-Commercial 4.0 International License (CC BY-NC 4.0)." Before it was read: no licence prose on the dataset page (retrieved 2026-10-23), which gives only "The recommended citation is "Global Integrated Power Tracker, Global Energy Monitor, September 2026 release.""; GEM's download form records "Creative Commons Attribution 4.0 International (CC BY 4.0) — /creative-commons-license" (https://api.globalenergymonitor.org/static/gem-download-form.bundle.js, sha256 e5ecbeab…905e5b, retrieved 2026-10-23).
Summary only: the source’s license keeps the full record at the source.
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Wikidata ·
Wikidata — company items (official website, headquarters, description, LEI, stock listing, English Wikipedia link)
Source: Wikidata (CC0) · license
Wikidata:Copyright (https://www.wikidata.org/wiki/Wikidata:Copyright, read 2026-10-22): "All structured data from the main, Property, Lexeme, and EntitySchema namespaces is available under the Creative Commons CC0 License; text in the other namespaces is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply." Wikidata:Licensing (read 2026-10-22): "All structured data (i.e. the main, Property, Lexeme, and EntitySchema namespaces) is released into the public domain under Creative Commons Zero." Access terms that bind us: Wikimedia Foundation User-Agent Policy (read 2026-10-22) "Scripts should use an informative User-Agent string with contact information, or they may be blocked without notice." and "Do not copy a browser's user agent for your bot, as bot-like behavior with a browser's user agent will be assumed malicious."; Wikimedia Foundation API Usage Guidelines v1.0 (2024-08-26) "When using Wikimedia APIs, an operator must: Follow the User-Agent policy ...; Follow rate limiting requests ...; Follow the requirements of the content licenses when republishing downloaded or cached data" and must not "Spread Wikimedia API requests over multiple user agents to hide excessive use by a single operator"; Robot policy (wikitech, read 2026-10-22) "Honor every directive in our robots.txt file.", "When we reply with a 429 Too Many Requests status code respect the delay specified by the Retry-After header", and, Action API rules, "If unauthenticated, keep the concurrency of your requests to 1 at a time, and below 5 requests per second overall." and "if your request takes more than 1 second to serve, please wait 5 seconds before making another request."; Wikidata Query Service User Manual (mediawiki.org, read 2026-10-22) "SPARQL queries can be submitted directly to the SPARQL endpoint with a GET or POST request to https://query.wikidata.org/sparql", "One client (user agent + IP) is allowed 60 seconds of processing time each 60 seconds", "Clients exceeding the limits above are throttled with HTTP code 429. Use Retry-After header to see when the request can be repeated." and "access to the service is limited to 5 parallel queries per IP."
Summary only: the source’s license keeps the full record at the source.
Around this company
Nearby 1
within 25 kmProjects
1
within 25 km
Nearest
5.9 km
Docking Shoal A wind farm --
All 1NearbyShowing all 1 nearby project.
| Status | Name. Sort by name, A to Z | Type | MW. Sort by capacity, largest first | Distance, sorted ascending. Sort by distance, farthest first | Nearest asset |
|---|---|---|---|---|---|
| Cancelled | Docking Shoal A wind farm -- | Offshore wind | 540 MW | 5.9 km away | nearest: Triton Knoll (Innogy) wind farm |
Sources GEM
Sources
- Global Energy Monitor — Global Integrated Power Tracker (unit-level power plants, eight technologies, all statuses)Global Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.