an earlier intergovernmental agreement envisages financing through a russian loan of around eur billion their economic viability and investment attractiveness is determined by the prices of fuels coal and natural gas and electricity tariffs which both depend mainly on politically sensitive tariff decisions investments in this sector thus remain a risky undertaking despite the significant business potential for electricity exports to neighbouring countries notably belarus poland and slovakia new generation capacity has also been developed the first unit of the dnister pumpedstorage hydroelectric power plant started operating by the end of and with additional units planned in coming years this plant might become one of the largest of its type in europe other segments of the renewable subsector remain for the moment dominated by smallscale units mostly privatelyowned nuclear safety is probably the most successful field of ukraine s cooperation with the eu which provides and supports the country s access to grants and loans