Table 2: Construction history

July 1993 Kannagawa hydro power field survey office was established
July 1995 The construction of the power plant was approved by the 130th meeting of Electric Power Development Coordination Council
July 1995 The office was reorganised into Kannagawa hydro power plant construction preparation office
February 1997 The office was reorganised into Kannagawa hydro power plant construction office
May 1997 Construction work on the power plant begins
October 2003 Water storage to the lower dam (Ueno) began
September 2004 Water storage to the upper dam (Minamiaiki) began
December 2004 Test run of Unit 1
December 2005 Unit 1 (470MW) started commercial operation