The sign indicating the zone of German village of Feldheim is pictured on the side of a road March 6, 2013. Feldheim, a 60-minute drive south of Berlin and home to about 125 people, is Germany's first and only energy self-sufficient village. Germany is a world leader in renewable energy and derives a quarter of its electricity from renewables, but rising prices have turned into a major political issue ahead of the election. Picture taken March 6, 2013. REUTERS/Tobias Schwarz (GERMANY - Tags: ENERGY POLITICS BUSINESS)