Hello Lynne, EDF asked me to take part in a trial when Smart meters were first introduced. I think they are a brilliant idea. As well as your smart meter you get a gadget which constantly displays information such as how much electricity you are currently using, the cost for yesterday, last week, each month in the year etc. Also the meter continually sends it's own reading to EDF so you never have to have your meter read and you never get an estimated bill. I've not had any problem with it.