This study presents a new methodology to evaluate long-term sustainable development of photovoltaic power plants and other energy sources. There is lack of energy models that take socio-environmental issues into consideration before decision making in energy planning and that are robust enough to support the lack of data. The methodology presented in this study fills this gap. As case study, the methodology was applied in Kano State – Nigeria, to evaluate the potentials of PV development in the next 15 years in two scenarios: baseline scenario and sustainable scenario. A total of 1975 PV power plants, totalizing 12.8 GWp in sustainable scenario and a total of 42 power plants, totaling 0.27 GWp in baseline scenario were calculated/obtained. The study also discusses the robustness of the methodology due to the lack of data and presents policy recommendations for the development of photovoltaic in the country.