In each of the Sanyo Shinkansen line (constructed by extending the Tokaido Shinkansen line), the Tohoku Shinkansen line, the Joetsu Shinkansen line and the Kyushu Shinkansen line (the Kagoshima route), the power supplies with the same frequency as that of the area through which each Shinkansen line is operated (60 Hz for the Sanyo and Kyushu Shinkansen lines, and 50 Hz for the Tohoku and Joetsu Shinkansen lines) are used.
上記以外の山陽新幹線（東海道新幹線を延長した形で建設された）・東北新幹線・上越新幹線・九州新幹線（鹿児島ルート）の各新幹線はそれぞれの沿線地域と同じ（山陽・九州は60Hz、東北・上越は50Hz）。