If marine energy is to become a viable alternative to fossil fuels, its competitiveness must be enhanced. With this in view, the combination of various renewables in the same marine space emerges as a solution. Among the different options, this paper focuses on co-located wave-wind farm. The aim of this paper is to examine the synergies between wave and offshore wind energy and translate it into monetary terms through an economic analysis to determine the savings that can be achieved through shared elements and common strategies. For that purpose different offshore wind farms are taken as baseline scenarios and different co-located WEC arrays are implemented. A high resolution wave propagation model (SWAN) and measured wave and wind data are used.