+ Positive Impact (sustainable)
Designed to produce more energy than it is required to operate, this positive impact house will offset its own embodied construction energy in 20 years time and will continuously provide energy for the grid or for storage. Intended for a desert climate, it utilized various passive methods to reduce heat gain and actively creates energy from the sun and the wind. It also creates 100% of the water that is required for a family of five via atmospheric water generation which is run also from the renewable on-site electricity. Greywater systems recycle shower and sink water for reuse in irrigation and other suitable second uses.
The 60-100 excess KWh per day of energy can be used to power electric vehicles and/or be sold back to the utility company, earning the owners approximately $3,000 per year and more than offsetting the carbon footprint of their lifestyle.
For more detailed information, please see this PDF.