Abstract
The paper is focused on the development of the Baltic Sea region taking into account the new EU energy policy. The authors elucidate the current situation and the power system infrastructure projects of the region. For the economic analysis and optimization of the development plans a method is proposed that takes into account the outlooks for upcoming 20-50 years and the initial information uncertainty. The method makes possible estimation of the technically-economic state, including market conditions, for a given power system.