Off peak savings listed as var-fair related off peak

Hi, on my statement it says I will save approx £170 annually on this tariff. How do you know this as I do not have a smart meter and can I switch to this tariff? Thanks

Hi @Adamw I’m afraid that this was actually an error on some bills which were sent out recently, we have corrected it since but there were a few misleading bills sent out. Sorry about that!