In this study, the AHP-GIS methodology was employed to identify suitable sites for solar energy plants in Peru. After considering various constraints, it was determined that approximately 30.48% of the country's territory is suitable for such projects. We emphasize the potential for expanding large-scale photovoltaic plants and the importance of regular updates. It is encouraged to replicate this analysis at the regional and local levels, especially in coastal and southern regions of Peru, and to consider distributed electricity generation projects in rural and remote areas, as well as other renewable technologies of national interest. This study utilized the AHP-GIS methodology to pinpoint suitable locations for solar energy plants in Peru. It identified that approximately 30.48% of the country's territory is suitable for these projects, highlighting the potential for expanding large-scale photovoltaic plants. Further analysis revealed a positive Net Present Value (NPV) and an Internal Rate of Return (IRR) of 26.58% for a photovoltaic plant installation in Juliaca, indicating profitability. Environmental benefits include reduced greenhouse gas emissions, preservation of ecosystems, and reduced water usage. Socioeconomic advantages encompass job creation, community development through reinvestment, and access to reliable energy in remote areas, ultimately enhancing energy security and reducing reliance on conventional sources. This underscores the potential of solar energy projects in Peru, particularly in Puno, for sustainable development, environmental conservation, and economic growth, aligning with global clean energy goals. Replicating this analysis and exploring diverse renewable technologies at regional and local levels is recommended, especially in coastal and southern Peru [1, 2].