The energy output of a wind generator (WG) variable due to the variation of wind speed at the installation site through the day hours and year months. Therefore, a back-up power supply (BUPS) is necessiuy for operating WG to supply isolated loads. This BUPS may be diesel generator or/ and alternative sources of renewable energy system (RES) which are available at the installation site. The diesel generator as a BUPS with WG to supply isolated loads had been studied in previous publication. In this work, alternative of RESs are studied and assessed as a BUPS for operating with WG to supply isolated loads. These alternatives are photovoltaic power system (PVPS) or/ and battery storage (BS). So, a hybrid model is presented here incorporates the added futures of dynamic modeling and graphic user interface in the power system block set and matlap program to assess the capacity of these BUPSs for operating with WG to supply isolated loads. Also, an economical model has been introduced to optimize the considered BUPSs from economical point of view. These models are applied numerically to estimate the capacityif alternative of WG/ BS and WGI PVPSI BS generation systems to supply an isolated load of a tourist village on the Egyptian coast of Red Sea. Also, these alternatives are optimized economically to supply the load study