Photographer: Tomohiro Ohsumi/Bloomberg
The No. 3, left, and No. 4, reactor buildings stand at Kansai Electric Power Co.'s Takahama nuclear power station at dusk in Takahama Town, Fukui Prefecture, Japan. Shares of Hokuriku Electric Power Co. and Kansai ElectricPower Co. have each dropped 40 percent this year amid investigations into seismic faults near their power plants.