"In a factory in Nevada, a large 3D printer prints the pieces of new prefab tiny homes that can work fully off the grid. When complete, the houses will run on solar power, including heating and cooling. An optional system generates water from moisture in the outdoor air so it isn’t necessary to connect to a city water supply. In the bathroom, the use of an OAS shower enables operation off the grid."
You can read about this in a recent article in FastCompany.

PassivDom is a cutting-edge modular manufacturer and developer of 3D printed homes. They too are 100% independent from the grid and traditional infrastructure, allowing people to live in their dream locations, no matter how remote.
The unique 3D printing method allows for an extremely temperature efficient construction. They also integrate the latest technology for fully networked smart living.

“We are creating something very interesting with extraordinary characteristics," says founding partner Maxim Gerbut. "The OAS Shower is an important component of our autonomous, networked utility system. It helps deliver the comfort of a home, while still being 100% self-sustaining.”

Modular has accounted for nearly 10% of all new home builds in the US since 2011. In raw numbers, that equates to more than 700,000 new modular homes produced by 125 modular manufacturing facilities in that time span.

And demand is expected to climb nearly 6% per year through 2020. Manufacturer shipments are estimated to reach 123,500 units annually by then, with an overall market valuation of $7.3 billion.

That growth shouldn't be surprising. According to the US Census Bureau, the average sale price of a traditional newly constructed home in 2016 was $372,500. Compare that to $73,100 for a new factory-built model—without counting the estimated additional savings of up to 40% in monthly utility bills.

More importantly, the modular movement is a push in the right direction for more sustainable living. While a significant part of the population, are more and more interested in living their lives with sustainability in mind, the solutions to make it possible haven't always been there.

Brace yourself, it's coming soon.