With Solar you are harnessing the abundant power of the Sun. Which means if you have sunlight you are generating power.
Choose to go Solar you can generate power to charge your battery bank or generate power to consume directly. Your module will depend on what is possible for you.
Solar panels have a very long lifespan so you can move them with you as your life evolves.
Whether its a 20W unit or a 200KW unit there is value at every stage.