One of the most spectacular concepts for supplying businesses, private households and local government with renewable energies on a decentralised, self-sufficient basis is currently being implemented in Feldheim, a district of Treuenbrietzen, a town in Brandenburg. The project owes its success to the excellent partnership between the municipality of Treuenbrietzen, the residents of Feldheim and the project developer, Energiequelle GmbH. The individual households in Feldheim, Treuenbrietzen, are supplied with heat and power from renewable energy power plants on their own doorstep via autarchic local grids. The nearby wind farm is the backbone of the local power supply grid, whereas heat is supplied by the local biogas plant. A sophisticated heating plant fired with woodchips is available for additional thermal energy requirements on particularly cold days.