Kyushu Electric Power
Corporate brand
UnclaimedA Japanese electric utility supplying customers across Kyushu and selected areas outside its traditional service territory.
Last updated November 4, 2026
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Overview
Kyushu Electric Power Co., Inc., commonly known as Kyuden, is a Japanese energy company headquartered in Fukuoka. It was established on 1 May 1951 as part of Japan's postwar regional electric-utility structure and became the principal electricity provider for Kyushu. Its traditional service area covers the seven prefectures of Fukuoka, Nagasaki, Oita, Saga, Miyazaki, Kumamoto, and Kagoshima. The company operates across the electricity value chain, including power generation, transmission, distribution, and retail supply. Its generation portfolio has included thermal, hydroelectric, nuclear, and renewable-energy assets, although the available reference material does not provide a complete breakdown of capacity or generation mix. Kyushu Electric Power historically operated as a regionally focused, vertically integrated utility. Its responsibilities included maintaining supply reliability across Kyushu, developing generation resources, operating networks, and supplying electricity to households and businesses. The company also became notable for expanding beyond its traditional territory: in November 2005 it began supplying electricity in Hiroshima Prefecture, making it the first Japanese electricity provider identified in the reference material to supply customers outside its established regional area. Nuclear power has been an important and contested part of Kyuden's operating history. The company operates or has operated nuclear facilities in Kyushu, including the Genkai Nuclear Power Plant in Saga Prefecture. Following the 2011 Fukushima Daiichi nuclear disaster, public and regulatory scrutiny of nuclear safety and restart policy intensified throughout Japan. In that context, Kyushu Electric Power was criticized for attempting to influence public opinion in favor of restarting two Genkai reactors. The episode became a significant reputational and governance issue for the company and formed part of the wider national debate over nuclear power, regulatory oversight, and public trust. Kyushu Electric Power is listed on the Tokyo Stock Exchange under ticker 9508.T. Its business identity remains that of a large regional Japanese utility, while its activities also connect it with wider electricity-market changes, including supply outside Kyushu and the evolution of Japan's post-Fukushima energy policy. The supplied reference material does not establish a detailed current corporate structure, executive roster, financial profile, or complete account of its present generation assets.
History
Kyushu Electric Power was founded on 1 May 1951 within Japan's postwar regional electric-utility system. The company was established to serve the electricity needs of Kyushu, an island whose industrial, commercial, and residential demand required coordinated investment in generation and network infrastructure. From its base in Fukuoka, Kyuden developed as an integrated utility responsible for producing electricity, moving it through the transmission and distribution system, and supplying customers across the region. Its traditional operating territory consists of seven prefectures: Fukuoka, Nagasaki, Oita, Saga, Miyazaki, Kumamoto, and Kagoshima. This regional role made the company one of Japan's major electric utilities, with responsibility not only for customer supply but also for maintaining system reliability across a geographically diverse area. The available reference material identifies electricity generation, transmission, and distribution as central parts of the company's business, but does not provide a full chronology of individual generating stations, network projects, or changes in generation capacity. Kyuden later extended its commercial reach beyond the conventional Kyushu boundary. In November 2005, it began supplying electricity to parts of Hiroshima Prefecture. The move was notable because it was described as the first instance in Japan of an electricity provider supplying energy outside its established regional area. This expansion demonstrated that the company could operate beyond the traditional territorial structure that had characterized Japan's electric utilities. Nuclear generation became a major issue in the company's public and regulatory history. Kyushu Electric Power is associated with the Genkai Nuclear Power Plant in Saga Prefecture. After the Fukushima Daiichi nuclear disaster in 2011, the future of nuclear generation became one of Japan's most politically and socially contested energy questions. Kyuden was criticized for attempting to shape public opinion in support of restarting two Genkai reactors. The controversy raised concerns about transparency, the relationship between a utility and local communities, and the credibility of public consultation on nuclear policy. It also placed the company within the wider national reassessment of nuclear safety and regulatory governance. Kyushu Electric Power is publicly listed in Japan under ticker 9508.T. Its historical identity is that of a regional, vertically integrated electricity company, while its activities have included generation sources such as nuclear, thermal, hydroelectric, and renewable power. The supplied sources do not provide enough information to establish a complete account of later corporate restructuring, current executives, financial results, or the precise status of each generation asset. Accordingly, those aspects are left unspecified rather than inferred.
- 2011
Genkai reactor restart controversy
[1]Kyushu Electric Power was criticized over an effort to influence public opinion in support of restarting two reactors at the Genkai Nuclear Power Plant.
- 2005
Supply expanded to Hiroshima
[1]In November 2005, the company began supplying electricity to parts of Hiroshima Prefecture, outside its traditional Kyushu service area.
- 1951
Kyushu Electric Power founded
[1]Kyushu Electric Power was established on 1 May 1951 to provide integrated electricity services in Kyushu.
Products and positioning
A major regional Japanese electric utility with an integrated generation, network, and retail-supply role in Kyushu.
Retail electricity
Electricity supply
Kyuden supplies electricity to households, commercial customers, and industrial users across its traditional service area in the seven prefectures of Kyushu. It has also supplied customers in parts of Hiroshima Prefecture since 2005.
Power generation
Electricity generation
The company generates electricity through a portfolio associated with nuclear, thermal, hydroelectric, and renewable sources. The available reference material does not provide a complete asset list or current generation mix.
Electricity networks
Transmission and distribution
Transmission and distribution operations support the delivery of electricity across Kyushu. These network responsibilities form part of Kyuden's traditional integrated utility role.
Controversies
2011
Genkai nuclear restart opinion-influence controversy
Kyushu Electric Power was criticized for attempting to manipulate public opinion in favor of restarting two reactors at the Genkai Nuclear Power Plant. The controversy occurred amid intense national scrutiny of nuclear safety after the Fukushima Daiichi disaster.
Brand decisions
2011
Supported restart of two Genkai reactorsOtherBackground
Following the Fukushima Daiichi disaster, the restart of nuclear reactors became a major national policy and public-trust issue in Japan.
Action taken
The company sought to influence public opinion in favor of restarting two reactors at the Genkai Nuclear Power Plant.
Aftermath
The effort prompted criticism and became a significant governance and reputational controversy for Kyushu Electric Power.
2005
Expanded electricity supply beyond KyushuStrategyBackground
Kyushu Electric Power historically served a defined regional territory covering the seven prefectures of Kyushu.
Action taken
The company began supplying electricity to parts of Hiroshima Prefecture in November 2005.
Aftermath
The expansion was notable as an early Japanese example of an electricity provider supplying customers outside its traditional regional area.
Recent events
Sources3 sources
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