This paper describes new planning principles for rural low voltage networks, which have to be significantly expanded due to the required integration of distributed energy resources. The planning principles focus on the optimized use of innovative technologies (like feed-in management and voltage controller) in order to lower the total costs of necessary network reinforcement. In order to derive these planning principles technical and economical results of multiple concrete and representative low voltage distribution networks are compared. By means of cluster analyses, dependencies between the supply tasks and the most suitable innovative technologies are examined. As a result 6 planning principles are presented and discussed as a basis for a company-specific strategic orientation for planning of low voltage networks.