I should go away from the computer for a while and get a life.
However the various electricity generation threads and an enquiry about portable generators made me wonder if a generator could run off natural gas instead of LPG.
Google found me
Then again if coal is far cheaper than gas I may just have answered my own question.
Nice looking bit of kit though, and might become more popular if rolling brownouts come back to haunt us.
Cheers
Dave R