Renewable solar energy makes hot water using vacuum tube solar collectors. Solar thermal water heaters for residential buildings and designs for home solar systems are explained here.  Information on how to plan a solar hot water system of panels of evacuated tubes is presented along with prices and assembly instructions. A tank with stand, vacuum tubes and heat pipes is a standalone system,  suitable for off-grid applications, requiring no electricity, pumps or controls--just add water!  On grid, electronic controllers and backup heating elements are offered as options that integrate directly into the basic solar hot water heater, making the system freeze-proof.  Assemble yourself in two hours.