Central Research Institute of Electric Power Industry

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Electric Power Utilities

Electric Technology Research Institute established(1951)

Economic research department added,name changed to "Central Research Institute of Electric Power Industry"(1952)

Electric & mechanical agricultural technologies invented

Agricultural Electricity Laboratory(currentry part of the Environmental Science Research Laboratory) established(1957)


Nine electric power companies established(1951)

Electric Power Development Co.,Ltd. established(1952)

Federation of Electric Power Companies established(1952)

Switch from hydro to thermal power generation,from coal-based to heavy-oil thermal

Rationalized designs of arched & gravity dams ・・・・・・・・・・・・・・・・・・・・・・・・・・

Crude oil thermal power generation put to practical use

Development of the CRIEPI economic forecast model

Testing ground for power distribution systems and a test farm(currently,the Akagi Testing Center)established(1968)


Kansai Electric Power Co.,inc.completes Kurobe No.4 hydroelectric power station(1963)

First Commercial nuclear power plant in Japan(1966)

Development of a prediction method for warm-water diffusion at thermal and nuclear power plants

Demonstration of the transmission of one million volts・・・・・・・・・・・・・・・・・・・・

Ultra-High Voltage Research Laboratory(currently, Electric Power Engineering Research Laboratory and the High Power Testing Laboratory) established to take over projects by the Ultra-High Voltage Research Institute(1977)


Oil crisis(1973,1979)

Extrication from dependence on oil, and the promotion of energy efficiency

Three Mile Island reactor accident(1979)

Demonstration of the reliability of spent fuel transportation casks

Nuclear Information Center established (1983)
(Operation transferred to the Japan Nuclear Technology Institute in 2005)

Development of a pressurized entrained-flow gasifier (IGCC)

Human Factors Research Center established (1987)


Increase of nuclear power generation

Chernobyl reactor accident (1986)

Development of a comprehensive stability analysis system for large-scale power systems

Information Communication Research Center(currently, a part of the System Engineering Research Laboratory) established (1992)

Development of acid rain observation & analysis methods・・・・・・・・・・・・・・・・・

Trilemma Symposium held (1993-2000)

Development of an electric utilities management model


Global warming surfaces

United Nations Conference on Environment and Development(1992)

Great Hanshin Earthquake (1995)

Liberalization of the electric power industry

Liberalization of the wholesale supply of electricity (1995)

JCO criticality accident (1999)

Low Dose Radiation Research Center(currently, the Radiation Safety Research Center) established (2000)

Development of a CO2 refrigerant heat pump water heater (Eco-Cute)・・・・・・・

Established lightning protection design guides for electric power systems

Eight specialized research laboratories established through reorganization; Solution Center for Environmental Issues established (2004)

Development of simplified, high-sensitivity bio-sensing technology to detect trace chemicals

Development of technology to store recycled nuclear fuel

Development of methods to predict the neutron irradiation embrittlement of reactor pressure vessel steel

Development of technologies for the crystal growth of high-quality SiC epitaxial layers


Liberalization of electricity retailing commences (2000)

Major blackout across North America (2003)

Kyoto Protocol entry into force (2004)

Opening of the Japan Electric Power Exchange (2005)

Development of systems for the damage estimation and restoration support of power distribution facilities

Development of methods to evaluate possible impacts on ecosystems in environmental assessment

Nuclear Risk Research Center established (2014)

Energy Innovation Center established (2016)


Great East Japan Earthquake/Fukushima Daiichi Nuclear Disaster (2011)

The Electricity System Reform

OCCTO established(2015)

Full liberalization of the electricity market(2016)

CRIEPI activities Epoch-defining research findings

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