The solar powered rain barrel pump system provides pressurized pumping through a garden hose with no electrical outlet required. This high powered system pumps up to 100 gallons on a single charge. reuse rain water for garden, animals, ect.
DIY Solar Thermal Water Heater: Free Hot Water For Life This project is super simple and uses readily available materials, its the kind of things that could easily be scaled up to meet lots of hot water needs. If you love hot water like me, this is a pro