On Sun, 01 Sep 2013 10:47:13 +0100, The Natural Philosopher wrote:

I would've thought that some form of solar panels and batteries
would
be the obvious choice.
Not in winter. Useless.
you'd need wind power, too

nobody needs wind power

But quite usefull when off grid. How much do those old Russian RTG's
cost on eBay? B-)

--
Cheers
Dave.