Electricity is an important social metric in the modern world. Power can be generated from renewable/sustainable sources, or non-renewable sources. Both sources of power are available in large quantities in Nigeria, but most of the country’s power supply is produced from non-renewable sources like oil and gas. There is the need to dip into the country’s vast renewable energy sources, like solar and wind energy, which has the potential to massively boost the amount of electricity being sent to the national grid. An important factor to consider in the exploration of renewable energy is location, as the location of renewable energy harnesses could be the difference between the failure or success of a renewable energy farm, system or set-up. To this end, this study used suitability analysis to examine the optimal locations of a potential large-scale solar installation by identifying and analyzing the positive and negative factors that dictate suitability. A framework that uses a multi-criteria decision method, known as Analytic Hierarchical Process (AHP), was used to decipher optimal areas within the district of Osun East, Nigeria. Subsequent to analyzing the selected criteria, it was found that 2.6% of the total land mass of the study area would be excellent for siting of solar farms. This has the potential of adding almost 3500MW to the country’s power output. The rest of the moderately suitable areas (21% of the land mass) could yield an extra 28000MW. The results show a great potential in the study area.