Kenneth wrote:
Howdy,

Yes, this is OT, but you folks seem to know everything...g

I need to get an automatic backup generator, but my needs
are unusual:

The fully automatic units I can locate are all in the range
of 7000KW.

I need something on the order of 5-10KW. So, compared to the
"standard" residential backup unit, the one I am looking for
is really tiny. But, anything over that (approximate)
capacity would just be money wasted.

Might any of you suggest sources for such a small (but fully
automatic) generator?

Very sincere thanks,

Not sure about the automatic part, but Honda might have the answers.
They make damn good generators:

http://www.hondapowerequipment.com/gencon.asp

Also, I saw a water powered sump pump as backup on "This Old House"
several months ago. The house water supply pressure drove the thing
when the power was out for the regular sump pump. Wouldn't solve the
fan issue though - I'm guessing you're trying to prevent a possible
freezing problem? Do a google on "water powered sump pump" and you'll
get lots of sources.