Explain a Confusing Household Bill Line by Line

The energy bill has a standing charge, a unit rate, and a line item you have never seen before, all on one page. This explains each charge in plain English, tells you whether it looks standard or worth a phone call, and works out what the total should be if nothing has gone wrong.

Explain this bill in plain English: [paste the bill text or list the charges shown]. For each line item, state what it actually is, whether it looks standard or worth querying, and the total you would expect to see if everything is correct. Under 180 words.