The interiors refer directly to the ceiling, and beyond that, to the space that forms part of your attic or crawlspace. And it is still quite possible to apply sustainable spray foam solutions to a basement area, should you have one. It probably requires the input of an insulating expert to help you determine which areas should be focused on in order to maximize the sustainability effort to its full potential.
The object of the exercise is to better utilize your existing network of power resources. But for many thinking along these ambitious but worthwhile lines, the effort still needs to go further. In days to come, it will be both legally and practically possible to be completely independent of the grid. And by that time, hopefully anyhow, but don’t hold your breath, those at the command centers of these grids will wish for that day too.
Because every year, the pressure is quite clearly mounting. Conventional but carbon inducing reserves are not about to be extinguished but they are becoming more unsustainable to manage from a financially sustainable point of view. Those in positions of power, the decision makers, both public and private, feel as though they have no alternative but to hike the costs to the consumer, both commercial and domestic.
But elsewhere in the world, they have dusted their hands of this noxious matter and simply got on with the more important business of cleaning the environment so that those of the future can at least have a life, perhaps even better than yours. Does that perhaps seem too ambitious or lofty for you? Well, so be it. But the evidence is already clear. Look at what solar power is achieving. And look at what spray foam is doing.