DTEK, the Ukrainian energy company led by the nation’s richest man, said customers in Crimea run the risk of power cuts after they didn’t fully pay for electricity they consumed in March. Companies and organizations owe Krymenergo, DTEK’s Crimean unit, 741 million Hryvnia ($64.4 million), the company with offices in Kiev and Donetsk said in a statement on its website today. DTEK is controlled by Rinat Akhmetov , who has a personal fortune of about $11.9 billion, according to data compiled by Bloomberg. “The main condition of supplying power to the peninsula is 100 percent payment in Ukraine ’s currency,” according to the statement. The unit isn’t authorized to supply customers if it hasn’t received payment, Dmitriy Gontar, director for sales at DTEK Krymenergo, said in the statement. The escalating crisis in eastern Ukraine and Russia’s annexation of Crimea last month led to the worst standoff against the U.S. […]