One of the major benefits of solar energy is that it is renewable. The sun (generally) shines each and every day, and there is no reason to worry that drawing power from the sun will somehow render it unusable in the future. Using solar energy, therefore, is a safe and reliable way to power the Earth.
Passive solar heater. Built from cans and mostly from repurposed/recycled materials. An excellent source of free heat for your home, shop, or camp.
Using the energy of the sun is a clean way to power the things we use. It's also sustainable as the energy never runs out. One hopes that technology will continue to progress so that everyone can use this energy. For now, you're planning to use it yourself, and that is a step in the right direction.