re: Trump pitched Republican leaders on a SOLAR-PANELED border wall

And it all changes again as The Earth tilts on it's axis for the winter months In The Northern Hemisphere,then you would definitely want the panels facing more southward,because that is where the Sun will be shining from,but for fewer hours each day.

Of course,that bit that you posted says a lot about peak usage and requirements being part of the equation too,pretty interesting stuff.