The board head of Ukraine's national power grid operator Ukrenergo said Friday that work was underway to enable electricity deliveries of 500 and even 600 megawatts from Europe, Liga.net reported.She warned that the Russian strikes could leave millions of Ukrainians without proper access to power, heat and water during winter, and that the "most vulnerable will pay the heaviest price."Ukrenergo said Friday that after a wave of Russian strikes on Wednesday triggered blackouts across the country, the nation's power deficit was at 30 percent."The pace of recovery is slowed by difficult weather conditions: ... strong wind, rain and sub-zero temperatures at night ... as well as icing and gusts ... in the distribution networks."Sean Spoonts, a U.S. Navy veteran and editor-in-chief of Special Operations Forces Report (SOFREP), told Newsweek that Russia is not equipped to provide simple accommodations like good winter clothing and protect its troops from frostbite."