This paper explores the effect dispatchable loads have on microgrids with a high penetration of renewable sources. For this study, the dispatchable loads are electric vehicles whose state of charge must be maintained on a 24 hour cycle. Simulation and optimization tools are utilized in MATLAB to optimize a grid design with 50% renewable energy sources in the form of a photovoltaic solar array. The findings of this study are that the electric vehicle dispatchable loads can be used to stabilize a microgrid against unpredictable losses in renewable generation.