The utility model discloses a cordwood power capacitor, comprising three or more cordwood power capacitor modules, wherein the cordwood power capacitor modules are connected and assembled through bolts to form capacitor sets, the cordwood power capacitor modules are connected with supporting insulators through bolts, the cordwood power capacitor modules are provided with sleeves, the sleeves are used as incoming and outgoing line terminals of the cordwood power capacitor modules, and the cordwood power capacitor modules and the capacitor sets are electrically connected through a busbar. The cordwood power capacitor is simple in mounting, maintenance and troubleshooting, low in noise, convenient in capacity expanding and long in service life.