Macragge1
Banned
You can convert to gas, but there are a couple of problems. You need to make (or have, I believe Ireland doesnt have any significant gas reserves) the gas, liquify it, distribute it, and make the high-pressure containers for the trucks as well as modifying the engines (thats not terribly difficult). The easy method to produce the gas is from coal..which Ireland doesnt have (I dont think you can get it from peat, although peat will be a useful home fuel source for any house with an open fireplace)
It would basically involve a lot less effort for Ireland to help the UK get oil flowing again. I dont know what the Irish power stations burnt, but I would guess at this point in time oil? In which case, another good reason for getting North Sea oil flowing.
Theres one thing I forgot earlier - long term realpolitic. Ignoring any other reasons, if Ireland helps the mainland in its darkest hour they can reasonably expect this to be remembered with graitude by both the people and government of the UK. While if they just close off, and refuse to do anything to help, that too will be remembered. And given the dangers in the future world, with a power that will still have nuclear weapons, this is not a sensible place to be in.
Even in its weakened state, in a couple of generations (maybe even one) the UK will again be far more powerful than Ireland. So which option makes more sense in the long term...
The point about realpolitik is very valid - regardless of your feelings about Britain, it's basically an extremely traumatised nation with a fair few atomic weapons - the best bet is to keep it onside at all costs.