I am on the fixed monthly payments plan and wondered if that means my electricity usage is effectively unlimited? I am worried that I’ve committed to a contract but at the end of the 12 months I’ll get an extra bill because of going over a ‘set amount’ that I’m unaware of. not sure if this sounds silly or not. I’m only in my first month and I’ll be paying slightly more in winter and less in the warmer months which is great but I’m a bit scared that putting my heating on too much will run up an additional bill. can anyone advise?