Ok,
So lets all (all 60 million of us that is) go back to 'Hobbiton'.
I am sure we can all hack it down at the Prancing Pony after a leisurely couple of hours working in the fields.

Conservation will play a very big part, but conserving down to zero is not an option.

That's your best suggestion yet, mudlogger.  I'm told the Prancing Pony does a very good beer.  You don't need nuclear power to provide the better things in life.
We have 60 million hobbits in the Shire.
All wanting the best things in life.
Hope you got yer Mithrail Waistcoat handy.