skeptical of this because “shifting their energy usage to daytime hours, so they can use all those photons themselves instead of handing them off to the grid (where, alas, we often get ripped off by our utilities, who buy our electricity at a cheap rate and sell it back to use more dearly).” does not seem to understand the expenses of Having A Grid With Electricity Available, BUT…. https://www.wired.com/story/after-going-solar-i-felt-the-bliss-of-sudden-abundance/