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I think we're likely to see gas restricted to businesses, with home-owners able to use it at certain times
I think the reverse. You can't turn off the gas network as air gets into the pipes and then to turn it back on again you have to visit every property. You can't switch it on and off at different times of the day. Big gas users, eg fertiliser and CO2 producers, can turn their gas off.
I think we're likely to see gas restricted to businesses, with home-owners able to use it at certain times, if we run low enough (and we have barely any capacity storage).
Which may mean no electricity shortage - but would mean very high prices for electricity.
But! It might be really windy.