For houses the fire seems to have been initiated inside. I wonder if smartmeters have not been developed to offer other possibilities..
What is very strange about smart meter is that the european comission has imposed to all the european countries to switch their old meter for new smart meters (linky). And the way these smart meters are deployed by force with gangster's methods (if you refuse they come back while you're out to replace it) is very suspicious.
I'm sure there's a fuckery behind it. When you think that all electronic devices containing chips have hidden possibilities that the cabal knows and can exploit, it smells fishy.