Potentially it is worth looking at the difference between EU countries and the UK. Not a perfect experiment one Data-Point to Data-Point basis, but maybe useful

Potentially it is worth looking at the difference between EU countries and the UK. Not a perfect experiment one Data-Point to Data-Point basis, but maybe useful on an aggregate basis. What I don't understand with this particular issue is that UK actually has access to natural gas, unlike many EU countries (I don't know how the EU countries are faring with this at the moment).