Power generation and electricity salesContracting operation and maintenance of power generation facilitiesEngineering, consulting, and sale of technology, know-how, and information related to power generation facilitiesSale and lease of power-related equipment, machinery, and systemsLabor dispatch businessReal estate leasingProduction, processing, storage, and sales of agricultural products
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Network
NETWORK
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History
27 EVENTS
Micro hydropower project "Aqua µ" received the Minister of Economy, Trade and Industry Award at the Japan Water Grand Prize
Contracted for patrol and inspection work at Niigata Prefectural Enterprise Bureau (Hirokami Power Plant)
Commercial operation of Hanakawa Power Plant begins
Contracted for patrol and inspection work at Niigata Prefectural Enterprise Bureau (Takaoka and other two power plants)
Commercial operation of Omiya Power Plant begins
Commercial operation of Shirakawa Power Plant begins
Commercial operation of Northern First and Second Power Plants (November)
Contracted for operation work at Gunma Prefectural Enterprise Bureau (Takahama Power Plant)
Commercial operation of Sumu River Power Plant (August)
Commercial operation of Kitfunabashi and Omagaki Power Plants (February)
Commercial operation of Fukusaku and Kotohe Power Plants (April)
Contracted inspection work for Iwaki Construction Office, Fukushima Prefecture (Takasiba Dam Power Plant)
Commercial operation of Akasakayama Power Plant (February)
Commercial operation of Izumi Water and Taira Water Power Plants (May)
Contracted annual inspection work for Eurastec Shizuoka Business Office, Eurastec Kawazu Wind Farm
Capital increase conducted with Toyota Tsusho Corporation as the underwriter
Start of commercial operation at Fukushima North Water Supply Reservoir Power Plant (April)
Start of lease with operation and maintenance contract for small hydroelectric power generation equipment by Tokorozawa Waterworks Bureau
Start of commercial operation at Ieyasu Public Water Power Plant (September)
Transfer of operation monitoring of all business offices to a base in Saitama Prefecture (March)
Start of commercial operation at Gungin Oze Katashina Power Plant (June)
Start of commercial operation at Kita Ibaraki Biomass Power Plant (July)
Start of commercial operation at Tohatsu Uchino Mountain Solar Power Plant (March)
Start of commercial operation at Tohatsu Hanada Solar Power Plant (May)
Start of commercial operation at Bunkyo Solar Power Iwai Solar Power Plant (November)
Start of commercial operation at Tohatsu Yasuoka Solar Power Plant (March)
Our company will celebrate its 100th anniversary in 2028
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News
8 ARTICLES
Gungin Oze Katashina Power Plant Wins Good Design Award
The Gungin Oze Katashina Power Plant, designed by Tokyo Electric Generation Co., Ltd. and Norihiko Dan and Associates, has received the 2026 Good Design Award. This community-oriented small hydropower facility harnesses the clear waters of Kurumazawa in Katashina Village, Gunma Prefecture. In addition to generating electricity, it was planned as a place for local residents and hikers to stop by, as well as a venue for environmental education. The design was recognized for the value it places on a landscape that harmonizes with the terrain and mountain trails, and on its relationship with the local community.
Tokyo Power Generation Co., Ltd. Notice of Executive Appointments
At the general meeting of shareholders and the board of directors held on June 25, 2026, the personnel changes for the executives of Tokyo Power Generation Co., Ltd. were decided. Mr. Isao Kobayashi was appointed as President and Representative Director, Mr. Tomoyuki Tsukada, Mr. Tsukiaki Iimori, Mr. Kazuwo Sumi, Mr. Yasufumi Sudo as directors, and Mr. Hiroyuki Nishiyama as an outside director. The auditors are Mr. Nobuyuki Tanaka, a full-time auditor, and Mr. Toshiro Taira, an outside auditor, while Mr. Keiji Horibe and Mr. Masahiro Mita retired.
Akadani River Second Power Plant Resumes Commercial Operation
Tokyo Electric Power Company has completed the re-powering work at the Akadani River Second Power Plant, located in Minakami Town, Tone District, Gunma Prefecture, which had been halted since December 2023. The plant, which began operation in October 1960, resumed commercial operation on April 1, 2026. The work included updating the turbine generators and substation equipment, as well as converting the inlet valves and governors from hydraulic to electric operation, achieving an oil-free system. This upgrade aims to enhance environmental considerations and maintenance ease, and is expected to increase annual power generation by approximately 660,000 kWh.
Miyahira Power Plant Resumes Commercial Operation
The hydroelectric power plant, which opened in 1923, completed re-powering work after stopping in June 2021 and resumed commercial operation on April 1, 2026. The work included updating the water turbine generators and penstocks, changing the inlet valves and governors from hydraulic to electric, and making the system oil-free to improve environmental considerations and maintainability. The high efficiency increase results in an annual power generation increase of approximately 400,000 kWh.
Notice of Interior Tour of the Gungin Oze Katashina Power Plant
The tour will be held from April 4 to December 5, 2026. The participation fee is 2,000 yen per person. Time slots are A: 10:30-11:30, B: 11:30-12:30, and C: 12:30-13:30. Application instructions and precautions are listed on the flyer.
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Public records
GOV
National Tax Agency basic information5010401035184
Source: National Tax Agency Corporate Number Publication Site, basic three items
Trade name
東京発電株式会社
Trade name (kana)
トウキョウハツデン
Name in English
Corporation type
301
Address
〒110-0008 東京都台東区池之端１丁目２番１８号
Postal code
1100008
Prefecture code
13
City code
106
Address outside Japan
Prefecture in English
City in English
Address outside Japan in English
Corporate number assignment date
2015-10-05
Update date
2018-04-10
Change date
2015-10-05
Registry closure date
Reason for registry closure
Successor corporate number
Details of the change
Latest record
1
Excluded from search
0
Processing type
01
Correction type
1
Trade name image ID
Address image ID
Sequence number
1892484
METI gBizINFO5010401035184
Source: gBizINFO (Ministry of Economy, Trade and Industry)
