This paper presents a simulation tool for the design and analysis of offshore ocean energy array networks. The tool integrates a number of modules which are divided into two core functions: the automation of the cable laying algorithm and subsequent creation of the network model, and the other performing the power flow analysis. The results of the power flow analysis are used to inform the user of the levelised cost of energy of different network configurations. The tool is compatible with geographical information system (GIS) software to allow for easy integration within the array design, installation and operation and maintenance stages.