Dear Mr MPAN First thanks so much for your quick response. I have already got the immersion heaters on timer switches which have them coming on off peak. My problem is with EDF in London. The x2 main elctricity uses are the immersion heating but also some kitchen underfloor heating in winter. I could program the latter to be off peak but it EDF ...

Dear Mr MPAN I am having great difficulty with a certain supplier - and working out in Economy 10 is best for me. I have inherited a system with 3 MPAN electricity meters - required because they are all single phase meters & there is a lift which I gather needs a triphase supply. Over and above this, all the water heating is by immersion ...