Yes, I remember those halcyon days. Unfortunately by the time I got wise to shifting to the in-day adjustment period it all ended. I don't go to too much bother now. If I think I can easily reach the target I accept the offer. I don't tell the family unless I need to at the last minute and just make minor adjustments to cooking and boiling the kettle etc. I don't go to the extreme of no lights, tv and switching fridges off. It's easy enough for a couple of quid here and there that might leave me with £30 or so extra credit in my account at the end of the year.