Thanks for the feedback on the website, it's helpful.  I think we'll add an animation or two about how the system integrates with other building systems but we likely won't go into detail about its construction. 

The costs are much higher than your estimates but the benefits and returns are much higher as well.  Sorry, no details to give there but suffice it to say there is a financial model that looks pretty interesting.  These folks from Germany seem to be on the same Path:  https://www.cloudandheat.com/en/index.html