Andrew submitted this idea :
To some extent, yes - they calculate based on past bills how much your likely consumption will be and spread it through the year in equal chunks. It works fine and I don't need to concern myself with failing to pay, it is all done automagically. The same with the gas and council tax too.
Likewise here, but I pay them monthly based on past consumption.
I don't need to do anything at all, all taken care of without me doing anything.