Pachamama (Mother Earth) Farmhouse is a home for a family of 4 on an organic farm North of Boulder, Colorado.

A passive solar concrete house, it incorporates:

• Mass walls and floors
• Solar hot water
• Hot water radiant floors
• Daylighting
• Solar shading
• Energy-efficient lighting
• Natural ventilation
• Natural, non-toxic materials

Notice the effect of simple overhangs for solar shading in the renderings, showing the shadows that will be cast at noon on the winter and summer solsti.