[ExI] Further ranting on power sat

[Eugen Leitl]

On Sun, Aug 19, 2012 at 01:35:24PM -0400, John Clark wrote:
> On Sun, Aug 19, 2012 at 12:53 PM, Keith Henson <hkeithhenson at gmail.com>wrote:
> 
> > Straightforward analysis states that the cost to lift parts to GEO has to
> > get down to $100/kg for power to be delivered at 2 cent a kWh.
> 
> 
> Straightforward? Forget launch costs, I would be very interested in seeing
> somebody build on the ground a photovoltaic or heat engine solar plant that
> converts sunlight to electricity, converts the electricity to microwaves,
> transmits the microwaves for one mile (not 23,000), then reconverts the
> microwaves back to electricity that can be sold profitably at 2 cent a kWh.

Power costs 50-60 EUR/MWh.

> I'm far from sure that power satellites would work economically even if you
> could get them into geosynchronous orbit free with the snap of your fingers.
> 
>   John K Clark

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Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
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