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Milestones

Oct. 1885 Tokyo Gas established.
July 1893 Following the enactment of the Commercial Code, name changed to Tokyo Gas Co., Ltd.
Nov. 1955 Number of gas customers exceeds 1 million.
Sep. 1962 Caloric value in the Tokyo Head Office service area raised from 3600 kcal to 5000 kcal.
May 1966 Negishi LNG terminal went into operation.
Dec. 1966 Number of gas customers exceeds 3 million.
Nov. 1969 LNG imports from Alaska started.
June 1972 Caloric value conversion to natural gas started.
Jan. 1973 LNG imports from Brunei started.
Feb. 1973 Sodegaura LNG terminal went into operation.
Dec. 1974 Number of gas customers exceeds 5 million.
Jan. 1976 High-pressure round pipeline from the Negishi terminal to the Sodegaura terminal went into operation.
Dec. 1977 High-pressure pipeline under Tokyo Bay went into operation.
Feb. 1983 LNG imports from Malaysia started.
Oct. 1985 100th Anniversary of establishment celebrated.
Oct. 1988 Caloric value conversion to natural gas completed.
Mar. 1989 Number of gas customers exceeds 7 million.
Aug. 1989 LNG imports from Australia started.
Jan. 1994 LNG imports from Indonesia started.
June 1995 Number of gas customers exceeds 8 million.
Jan. 1998 Ohgishima LNG terminal went into operation.
Dec. 1998 LNG imports from Qatar started.
Dec. 1999 Keihin high-pressure land pipeline and Yokohama high-pressure land pipeline completed.(Negishi LNG terminal,Sodegaura LNG terminal,Ohgishima LNG terminal linked with high-pressure pipeline)
Feb. 2002 Number of gas customers exceeds 9 million.
Feb. 2005 Residential fuel cell co-generation systems first launched to market in the world.
Feb. 2006 Standard caloric value lowered from 46.04655 MJ/m3 to 45 MJ/m3
July 2006 Transferred Nagano business area (43,715 households) to Nagano Toshi Gas.
Sep. 2007 Exceeded 10 million customers.
Apr. 2008 Start-up of new regional energy service provider - "LIFEVAL."
Apr. 2009 LNG imports from the Sakhalin II Project started.
Oct. 2009 Completion of new regional energy service provider - "LIFEVAL."
Oct. 2009 Transferred Kofu business area (30,190 households) to Tokyo Gas Yamanashi.
Nov. 2011 Formulated Challenge 2020 Vision
Mar. 2012 Chiba-Kashima Line went into operation.
Mar. 2016 Hitachi LNG terminal went into operation.
Mar. 2016 Ibaraki-Tochigi Line went into operation.
May. 2016 Integrate Chiba Gas, Tsukuba Gakuen Gas and Miho Gas into Tokyo Gas.

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