The paper analyses the integration of the economic interests of the countries of Eastern Europe. The main direction of the research is a strategy of creation of a unified energy systems of the countries of Eastern Europe and Russia. The roadmap will enable participants to meet the growing energy consumption and energy security of the participants. Forecasting is the main approach in the development of scenarios for implementing the roadmap. Technical and economic content of the roadmap is based on the joint development of the Russian Agency for the Cooperation of Energy Regulators and ENTSO-E.