Imagine for a moment you had a billion dollars to spend on a utility-sized
PV installation.
How much power would it generate?
How much space would it take?
AS much power as $1 billion dollars could build?
I dunno - how long's a piece of string?
Yeah, I know, depends on thickness, quality, material, age, flexibility etc.
Same goes for a $1 billion spent on a PV utility, I guess.
as for how much space - are you thinking horizontally or vertically?
Above or below ground?
In a city or in the desert?
In the USA? China? Alaska? Australia?
(or anywhere else you can spend $1 billion)
Come to think of it, Mildura in Victoria had a plan to put up a mile high tower,
with solar reflectors heating it up to generate several megawatts of power. That
was planned to cover an area with a 5Km diameter.
Now there's a starting point for how much space!!
Graham