On February 5th 2008 the Management Boards of Vattenfall Europe Transmission and Polish transmission system operator - PSE-Operator S.A. met in Berlin with an aim to evaluate the results of cooperation to date and to determine frames for future actions.Working groups reported about last year’s activities in areas of grid extension, coordinating network investments planning, security of supply, operational coordination and communication.  These high-level talks will take place regularly in the future to assure an effective cooperation and draw in all integrated European transmission system network-related topics.