Wind Potential Maps

Germany
Germany (44kB)
Westphalian bay and fringe areas (107kB)
Landkreis Kronach (Link)

Europe
Offshore-Wind energy in the EC (Source: Study of Joule I (Jour 0072), 66kB)

World wide
Estland (Source: Steinrücke, Kull, Stemmler: Zukünftige Nutzung der Windenergie in der Republik Estland. Die Erde, 127/1996, [90kB)
USA (Link)
Texas Wind Maps (Link)
Minnesota Wind Energy Resources Map (Link)