9513 on Tokyo Stock Exchange

Electric Power Development Company

Logo: Jihara19, Public domain, via Wikimedia Commons4

Japanese electric utility company

The Electric Power Development Co., Ltd. (電源開発株式会社, Dengen Kaihatsu Kabushiki-gaisha), operating under the brand name J-POWER, formerly Denpatsu (電発), is an electric utility in Japan. It mainly produces electricity from coal and hydroelectric power stations. It also has a few wind farms and is currently building a nuclear plant in Ohma, Aomori prefecture, that is scheduled to begin operations in November 2014.2 Its shares trade on Tokyo Stock Exchange under the symbol 9513.1 Wikipedia text CC BY-SA 4.0

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Last updated Oct 21, 2026.

Overview

1952Founded1

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  • Ticker9513 on Tokyo Stock Exchange1
  • Industryelectric power industry1
  • HeadquartersChūō1
  • Founded inTokyo1
  • Websitewww.jpower.co.jp
  • Legal formkabushiki gaisha1
  • LEI549300KMHPUAQI8VEH903
  • StatusActive3
  • LEI statusIssued and current3
  • Registered address銀座六丁目15番1号, 104-8165 東京都 中央区, Japan3
  • Registered withLegal Affairs Bureau, 0100-01-0507643
Denpatsu Building, at Ginza, Chuo, Tokyo (2019-01-02) 01
Photo: Lombroso, CC BY-SA 4.0, via Wikimedia Commons6

The Electric Power Development Co., Ltd. (電源開発株式会社, Dengen Kaihatsu Kabushiki-gaisha), operating under the brand name J-POWER, formerly Denpatsu (電発), is an electric utility in Japan. It mainly produces electricity from coal and hydroelectric power stations. It also has a few wind farms and is currently building a nuclear plant in Ohma, Aomori prefecture, that is scheduled to begin operations in November 2014. J-Power is the sole operator of the transmission lines connecting the four main islands of Japan.2

Corporate structure

Electric Power Development Company sits at the top of its group. 3 entities, 2 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Electric Power Development Company 東京都 中央区, Japan
    • Ecogenomics, Inc. Subsidiary · Fukuoka, Japan
    • BCS Finance Co. Pty Ltd Subsidiary · Sydney, Australia

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

The story

After World War II, as a part of many changes implemented, the Supreme Commander of the Allied Powers ordered the dismantling of Nihon Hassoden K.K. (日本発送電株式会社, Nihon Hassōden Kabushiki-gaisha), which at the time provided electricity to all of Japan with a semi-governmental status. This was broken up into a number of utilities, which have become Japan's modern electric utility companies. However, in the battered state of post-war Japan, there were few investors out there to put money in these new companies, and certainly not enough to allow for sufficient R&D of power sources that Japan needed to keep up with the demand of power, thus it was decided that the occupied government would specially create an electric company with such capabilities. On September 19, 1952 the Electric Power Development Company (EDPC) was established as a government agency.

In 1997, the Japanese government announced the privatization of EDPC, and in 2004, it went public and was listed on the Tokyo Stock Exchange.

From Wikipedia’s article on J-Power, shared under CC BY-SA 4.0.5

Subsidiaries and ownership

Subsidiaries

From Wikidata.1

Timeline

  1. 1952Founded Founded in Tokyo1