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Posted by Steve on January 29, 2012, 4:22 am
 
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?




Posted by Mho on January 29, 2012, 4:56 am
 
Would you build your won PV factory?

Think of the line size increases you may have to build to take the energy
away to load sites.

Think of all the breakdowns and protection switching  you would have in
solid state components in 500MW of generating capacity.


----------

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?




Posted by argusy on January 29, 2012, 8:35 am
 On 29/01/12 2:52 PM, Steve wrote:

AS much power as $ 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 $ 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 $ 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

Posted by Steve on January 29, 2012, 3:54 pm
 I am thinking about Hawaii.  They are struggling with ways to implement a
mandate to boost use of renewables that everyone can agree with.

Never mind tiny details - I am not building the thing myself.  I am just
hoping for generalities about cost and space.

They can choose utility-size installs, or encourage every single property
owner to put a grid-connected unit on the roof.  That is no doubt like
herding cats, so the utility-scale project is more likely to happen.

Steve



Posted by Mho on January 29, 2012, 6:10 pm
 I would figure about $ per Watt at that quantity. This would approximate
500MW of panels and electronics generating capacity (Using an American
billion count).

Three phase co-generators would be needed. Even at the 550kV three phase
tower line we would have 550 amperes of current on three strands of
conductor.

OK, let's make that about half the money for PV panels and the other half
for distribution costs. Funding / incentives for smaller pockets of PV
panels are probably more economically viable. The massive costs for
centralized energy source distribution for only 4-5 hours per day are
probably not warranted for the income,  gross or net, on a distribution
system.


-------------

I am thinking about Hawaii.  They are struggling with ways to implement a
mandate to boost use of renewables that everyone can agree with.

Never mind tiny details - I am not building the thing myself.  I am just
hoping for generalities about cost and space.

They can choose utility-size installs, or encourage every single property
owner to put a grid-connected unit on the roof.  That is no doubt like
herding cats, so the utility-scale project is more likely to happen.

Steve



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