The purpose of this article is two-fold. The first is to model the output of a photovoltaic panel for 10 Canadian cities to determine the optimal orientation to maximise energy production. In all instances, the desired tilt angle is slightly less than latitude with the average optimal tilt angle being 9.6¡ã less than latitude. The average optimal azimuth angle was found to be 1.9¡ã west of due south. Secondly, to determine whether geographic dispersion of photovoltaic panels reduces the variability in energy production. If so, how much dispersion is required?; and does the dispersion affect the correlation of production with system-wide grid demand? Simulations were conducted for 1 000 kW of photovoltaic panels over three years for 16 locations across Ontario. The results indicate geographic dispersion can: decrease variability with minimal penalty to total energy production; increase or decrease correlation with demand depending on dispersion distance and location.