In Germany, the fast growth of renewable generation and cogeneration of head and power is co- financed. Today, in strong wind situations, the wind power achieves about 18% share of the whole peak load. Beginning from 2007, the future growth will be focused preliminary in offshore locations where large wind farms with some 100 MW installed power will be erected. Such a large scale penetration of "renewables" in the power balance will lead to a sustainable restructuring of the actual operation practice in power systems. The German experience is reported.