The market for net zero energy buildings here in the US is predicted to be worth 690 billion dollars within 8 years. My current home energy costs run about $100 / month, but for some folks, energy consumption in their home is a sizable slice of their budget. Imagine a home that has a net energy use of zero? It would still be connected to the power grid. But, using solar panels and geothermal heating and cooling, would purchase energy when needed from the power company and sell it back when the solar panels or wind turbines produced more than the home could use at that time.
Here’s a video of how two companies teamed up to build the first net zero home in Michigan of all places, where the mercury drops pretty low in winter.