In the aftermath of German re-unification, the city of Leipzig was allowed to set up its own municipal utility as an exclusive supplier of electiricity for 20 years on the condition that the Stadtwerke should do its best to protection the environment. The area around Leipzig had been ravaged by opencast lignite mining under the old regime so that a commitment to help the environment was badly needed. The Stadtwerke was expected to set an example. In 1992 it promised premium payments for renewable energy at 30% more than the normal rates laid down by the Electricity Feed Law. Power from the first wind turbine to benefit from this ruling is now being bought for DEM 0.223/kWh. The Tacke 600e machine was commissioned in December by wind plant operating company Windwerk of Leipzig. "We are now waiting to see how it performs before pushing ahead with the installation of two more turbines," says Andreas Arens of Windwerk. Windwerk was set up as an operator company by the engineering and wind consultancy company Zopf, based in Papenbruch in Brandenburg.