The line first opened as the Takamatsu Electric Tramway (高松電気軌道, Takamatsu Denki Kidō) on 30 April 1912 between Dehare (出晴) (close to the present Kawaramachi Station) and Nagao. The line was originally 1,067 mm (3 ft 6 in) gauge and electrified at 600 V DC, but it was regauged to 1,435 mm (4 ft 8+1⁄2 in) in June 1945, and the overhead line voltage was raised to 1,500 V from December 1976.[1]