As with solar energy, the best location is on the Equator at a high elevation with neglible cloud cover. That would be Quito, Ecuador. The economics would be several times better than Arizona.
33 posted on 02/19/2014 4:13:22 PM PST by Praxeologue
Concerning the best location, here is an article that describes how insolation, sometimes referred to as irradiation, varies by latitude, elevation and climate.
37 posted on 02/19/2014 5:28:28 PM PST by Praxeologue