reading that.
then you have no choice as the supplier will be automatically reducing your bill by £200 and then claiming the £200 from the government . then you repay the government via your bill over the next 5 years
As I said it is not a loan - the government will give the money to the energy companies who will then be able to reduce your bills and spread the cost over the following years. No different to them reducing prices then increasing them over time.