energy conservation

Building Energy Optimization Tool
BEopt (Building Energy Optimization Tool) is a free software application made by the USA National Renewable Energy Labratory designed to evaluate residential building designs and identify cost-optimal whole-house energy savings along the path to zero net energy. BEopt can be used to analyze both new...

Earthship Biotecture
Earthship is a type of house built with natural and recycled materials with energy conservation in mind. It is designed to produce water, electricity and food for its own use. Earthship basic design principles take advantage of the existing natural phenomena of the earth, building with natural and re-purposed...