The tropical regions, typically the poorest regions, receive the most solar energy. Geopolitical conflict over solar resources are less of a problem. Once the power plants are built, the energy is free. No noise or pollution is created in generating the energy. You wouldn't mind having one in your backyard or on your roof.
Solar energy creates jobs.
Since the fuel is free, money spent on solar is only for materials and labor. Distributed power generation creates local jobs. Someone has to build and maintain the equipment in your backyard. Use of the sun as an energy source does not require a police state. Terrorists can't use the fuel to create bombs.