Renewable energies are gaining importance in urban management and in the planning of new residential and mixed-use areas. Attention is also paid to self-sufficiency, as the public electrical grid is strained through the integration of renewables. Here, an energy supply concept for an urban residential area in the planning phase is discussed to meet both economic and ecologic criteria. Based on the demand, different technical options are analyzed. The integration of renewables is coupled with energy storage to increase the self-sufficiency of the residential area. The economic feasibility of the energy supply concept depends on the requirements to be met as well as the regulatory framework. With the currently available technology and the regulatory framework in place, self-sufficiency and economic feasibility are opposing targets.