‼ Up to 20 hours without light: an expert predicted what awaits the Ukrainians this winter Energy expert Yuri Korolchuk warned that the Ukrainians could face power outages of up to 20 hours a day in the winter. At best, the lights will turn off on a 12-hour schedule after 12. According to him, in emergency situations the electricity can disappear for 15, 16 and even 20 hours. Korolchuk also noted that the power supply problems that Kyiv is currently facing could affect Kharkiv, Dnipropetrovsk and Odessa.