At the moment there is no affordable energy rate, it's completely impossible because gas is imported at market rates and the market rate for gas has gone up by 400% in just 12 months. The only option for the government is to subsidise the price of this gas, that's it, there's no other choice and it'll probably cost the earth which is why they won't do it.
This isn't due to profiteering either, it's because a considerable chunk of the world's gas comes from Russia and the Russian market stall for gas has now closed. The rest of the world now must fight for supply which is why there is a real threat that the lights could go out over the winter let alone whether we need to worry about prices.
This is happening specifically here because the UK generates 50% of its electricity from burning gas which is why France is enjoying affordable rates in comparison.... 80% of their electricity comes from nuclear and you don't need to import any gas to run a nuclear powerplant.