I signed up this morning. It says there will be at least 12 'saving sessions' in winter and possibly lots more. 24 notice is given so it won't take much to adjust my use of appliances and if I don't manage it it hasn't cost me anything. So I saw no reason not to sign up.
The aim is not really to save the customer money but to reduce the demand for electricity at the peak period (4-7pm) and make it less likely they will have to have deliberate blackouts because they cannot meet demand.
//I’d rather them deduct the £100 off my Bill , if they can afford doing this then why not ?//
It's about avoiding blackouts rather than reducing your energy costs.
Right I'm going to do my bit and turn everything off and go down the club from 4-7pm on week days. Don't try and talk me out of it, it's for the Common good and that's the kind of guy I am.
Between 4 and 7 I have on my television and a light in the room I'm in, I can't see it makes a lot of difference, I'm not sitting in candlelight as I have mobility problems I need bright light. I cook with gas. I don't want a smart meter.
Assuming you don't join TTT down the club, you probably won't want to turn off heating, so the main way of saving power us will be by not using an electric hob or oven. Hard luck if you cook by gas.