It sickens me when I see these stupid gullible people with a solar array on their roof, especially when the roof does not face due south at 30 degrees.
The other day, I saw a church with a hundred or so solar panels. At least half were fogged meaning the seals broke and they were useless.
In my area, solar efficiency is only about 40% of what it is in the desert.
You just need to put panels up correctly.
Some on the South for daytime, and some on the North for nighttime.
If you house is not efficient, we need to come back and retrofit the North side.