This contribution focuses the challenge of analyzing the performances of enterprises which participate in modular Virtual Enterprises. Modular in that context means “consisting of independent participants”. In order to be able to draw valuable conclusions a comprehensive performance analysis approach (PAA) is required. For the development of an approach for the value-added process-related performance analysis the fulfilment of some preconditions is necessary. A comprehensive approach for the analysis of performances within networked production structures is an indispensable component of the operative management to secure sustainable success. In the following the fundamentals are distinguished and some effects are discussed. Additionally some possibilities for the extension of the approach are introduced.