Depends on a case by case basis. You'd need a desert, the South of Spain, Greece or Texas. Just like geothermal, it's very location specific, whereas one could deploy a nuclear reactor on the Moon or Mars.
Maybe a bit nitpicking, but solar would even work better on moon and mars due to the lack of atmosphere. But yes, here on earth it is very location specific.
Seems like those would take up lots of land area and easily fry and possibly blind animals, especially birds that get too close.
They do look cool though.