This daily supply charge bullshit needs to go.
100% agree, or at least, make it a set cost across all energy retailers.
For years the government have tried to make it "easy" to compare energy plans across several retailers. It's anything but easy. I'm pretty good with spreadsheets and even I find comparing prices time consuming. On one hand it might seem like you're getting a good rate, until you factor in the daily supply charge and all the other little add-ons like "summer and non-summer demand" charges and at what time of day you actually use the most electricity.
Yeah. It's subterfuge intended to wear down the patience of the consumer. I wonder if the long game is to do what the telcos did here and set up a planned usage amount for a set fee. But you're right, it's very hard to pin down a pp-kWh from them, especially the mobs that nobody has ever heard of cold-call and then promise the earth.
I had one chap with heavy accent call from within a noisy room so hard to understand but wouldn't tell me the rate until I told him my existing rates.
He kept ringing and eventually became abusive so I had to block him. If that's what their sales dept is like, imagine trying to ring for support. The joke of it is I was initially interested.