Not sure (it's been a long time) but I think that a figure like that (a square 200 miles on a side) arose long ago based on a constant insolation (so, spread ar

Not sure (it's been a long time) but I think that a figure like that (a square 200 miles on a side) arose long ago based on a constant insolation (so, spread around the world, not one location) and 100% capture(??). (For world electricity use only, based on usage at that time.)