weeHouse is selling their solar-powered SMALL prefab homes (350 square feet) for $99,000 ($109,000 for states west of Colorado). The house comes with an "off-grid solar package" made by Fusion Modular. Click below for details...
The house is powered by Fusion's 720W AC Energy Kit, which supplies the electricity needed to run the home. The buyer needs to supply the foundation, well, septic hookups, and an electrician to install the energy kit. The finished house operates off the grid, for a total cost of about $283 per square foot.
As you go larger, the cost per square foot decreases. Non-solar 2,000 square foot weeHouses are on sale for around $125/sf, marked down from an average of $150/sf, excluding the cost of wiring and hookups.
Larger houses can also be outfitted with Energy Kits including solar panels and battery backups. For more information on weeHouses, click here. For more on Fusion Modular Homes, click here. Photos: Alchemy Architects, Found via Prefabcosm and Jetson Green.