Your solar collectors will still be pulling in 1/3 of summer sun in the middle of winter (rough estimate, varies by latitude and weather, void above arctic circ

Your solar collectors will still be pulling in 1/3 of summer sun in the middle of winter (rough estimate, varies by latitude and weather, void above arctic circle). At the edges of winter you’d even be gaining energy still, so let’s say 40,000kg. That fits in an underground tank typically used by gasoline stations and could be filled by two tank trucks. Sounds doable in the scheme of new house construction, subject to the cost of the chemical of course. But, I have to think that if space is available, increasing the collector area to gather more winter energy and reducing the inventory of chemical and energy would make more sense. In the summer you could sell your saturated chemical to industry and have them replace it with unsaturated to offset your panel cost. Of course now that I have introduced shipping… who wants to live in a shiny reflector farm? Cover industrial buildings and car parks with reflectors, ship or pipe the chemical to houses and have a nicer domestic landscape. I wonder if there are degradation issues? They make a point of being able to store for 18 years which probably only interests survivalists, but make no mention of cycle limits.