> Thanks for the info on photo voltaic, I was about to plop down a lot to install solar panels on my home in S Florida.
In Florida they might pay off, since you use electricity for cooling; the point I was trying to make (and I didn’t do too well) is that the cheaper the cells, generally speaking, the better. The price of the tech will decline further, and efficiency of the cells has risen.
> Use will promote efficiency, right along with battery technology.
Efficiency of the cells won’t improve much — the area of improvement will be the cost of manufacture. When (if) a breakthrough is made in ambient temperature superconductors, replacement of the trunk lines with the new material(s?) will in effect approximately triple electrical production in the US without building a single generating plant. Changing from direct use of fuels to buried heat exchangers (a heat pump system; some neighbors have used that for over 30 years, the price of those has risen, alas) would be an understandable consequence to the net reduction of generating costs.
btw there are no trees near my house though I have several tree in front and in the backyards. Plus the length of the house runs East to West and faces to the south.