The ZEGG community has done one more step towards a complete energy supply from renewable sources. Since December the combined heat and power plants run with the wind gas tariff from Green Planet Energy. This tariff supports the development of wind gas technology - produced by wind energy that cannot be fed into the grid – and thus could become an innovative and sustainable form of gas generation. Since 1991 the ZEGG owned cogeneration plant has been operating with wood chips. In 2010 heating was improved by installing a modern wood chip boiler, a log boiler and an exhaust gas heat exchanger. The devices will switch off and on automatically as needed. Four photovoltaic systems and three wind gas-fired cogeneration plants produce electricity and hot water. Additionally the waste heat of our large cold store is used for heating water. ZEGG thus stands for an energy supply system that is innovative, regional and CO2-neutral.