Three utilities are likely to face power shortages this summer in their service areas, including in the cities of Osaka, Fukuoka and Sapporo, if all nuclear reactors remain idled and temperatures reach levels seen in 2010, a government panel said Thursday

The Kansai region is projected to see especially tight supply and demand, with peak summertime demand projected to exceed Kansai Electric Power Co.'s capacity by 15.7 percent in August, the panel of experts said in a draft report.

The panel also estimated that Kyushu Electric Power Co.'s service area will experience a 3.7 percent shortfall, while Hokkaido Electric Power Co. will face a 3.1 percent power shortage. It plans to finalize its report Saturday.