Payment strikes

In the US, UK, Mexico and China, non-rich people who have been shafted and cannot possibly afford the payments they are compelled to make are starting payment strikes.

I am puzzled by the concept of "energy bills" used in articles about the UK. What is an "energy bill"? I have never received one. I get bills for gas and bills for electricity. Some people use fuel oil and get an oil bill. Is the term "energy bill" an oversimplified way of generalizing about various kinds of bills? Does the system in the UK send people just one bill for all kinds of energy?

The term "fuel poverty"