That is the 3.0 insolation I chose. It’s reasonably representative of areas of northern hemisphere cities. The United States average by population is probably b

That is the 3.0 insolation I chose. It’s reasonably representative of areas of northern hemisphere cities. The United States average by population is probably between 4 and 5 according to this map, but winter is lower and you have to plan for that. https://www.nrel.gov/gis/images/eere_pv/national_photovoltaic_2012-01.jpg https://www.nrel.gov/gis/images/eere_pv/national_photovoltai... Here is a map of the world… https://globalsolaratlas.info/downloads/world https://globalsolaratlas.info/downloads/world Northern Europeans are going to want to have some power lines to the south. Chile might be the new aluminum refining capital of the world. Africa would be energy rich.