> > http://www.pentadyne.com/spec_vssdc_plus.htm, claims 60kW 
> load for 45 
> > seconds.  That should power your house for, oh, 20 minutes 
> or more.  
> > Big & heavy too.  Lasts over 20 years.
> 
> Rough calculations say that's equivalent to less than a 
> gallon of gasoline.  Chemical energy is VERY dense, 
> especially if you get half (more than half, actually) of your 
> reactants from the air.
> Presumably that's why batteries win out over competitors 
> (likewise, compare even the most spectacular supercaps to 
> batteries...)
> 
> BillW


Looks like the market for these flywheels is to power your business between
the time the electricity cuts out until the generators cut in.

The figures they are quoting (200KW/10sec etc) sound like that.

Tony

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