The main goal of the study is to define a proposal for the long-term development of the transmission network in the Zadar area with a special emphasis on the preferred solution of a reliable 400/110 kV transformation that will enable the safe supply of the surrounding TS 110/x kV. The accepted version of the solution for the long-term development of the transmission network in the Zadar area will be the basis for supplementing the spatial planning documentation, detailed design work and defining the plan for the construction of the proposed facilities, reconstruction of existing and construction of new TS 110/x kV, and reconstruction of existing and construction of new DV 110 kV .