This Earth Berm Passive Solar Home was built to take advantage of the natural temperature of the earth and the benefits of the sun. The axis faces due south, allowing the “High Solar Heat Gain” windows to collect heat on sunny days. The heat is stored in the acid stained concrete floors and interior concrete walls. 6″ thick “Polystyrene” insulation keeps it from losing heat to the ground, and steady earth temps make heating and cooling a minimal task. Photo Voltaic panels and a battery back-up system keep this house fully powered with no attachment to the “Grid”. Open concept design with a long linear southern exposure keeps all the rooms filled with light. Proper overhangs for shading keep this home cool in the summer.