KIEV, April 11 – DTEK Krymenergo has started the procedure for settling an investment dispute with Russia under an agreement on mutual protection of investment signed by the Ukrainian and Russian governments.

DTEK said that the dispute is linked to the nationalization of the company's assets on the territory of Crimea.

If the dispute is not settled during negotiations, DTEK Krymenergo seeks to file it to the international arbitration court. The sum of compensation of actual and potential loss of the company could be over $500 million.