Re: Fuel Cells and "green" energy

[Jim Green <JMGreen@SISNA.COM>]

>  Anyway, to get
> large amounts of solar and wind into the system as 'energy on demand'
> sources may require up to 4x the generators and solar collection areas as
> would be needed if these were used directly. Such a system would then
> require tens of thousands of square miles of photovoltaics and 10s of
> millions of large (megawatt) wind generators.

We have not yet discussed the "amount of energy" (Ugh!) needed to
manufacture, repair, and replace the photovoltaics and wind generator
towers and turbines -- losses well beyond the thermal losses.

And would somebody be willing to venture a guess as to the number of square
miles of turbines and photovoltaic fields which would be required to make
any sort of meaningful difference in the whole issue.


Jim Green
mailto:JMGreen@sisna.com
http://users.sisna.com/jmgreen