> > If its so "trivial" one would think there would be a good many more
> > solar  farms out there.  Same goes for wind farms.  People have
> > been working on these for a long time; why isn't there a more
> > reasonable return on investment yet if it can be done so easily?

NZ company Whisper Tech is now producing Stirling engines for
domestic power generation (apparently beating My Segway - Dean
Kamen). They've run household trials in the UK for some time and,
as happens with wind/solar, there is enough left over to feed back
into the national grid. Gas is a reasonably clean energy source and
could be got from rubbish dumps or bio-mass

Experiments are going on around NZ with wave/tide/wind power too

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