Do you include historical energy tariffs in your comparisons?

You can find historical tariffs in the drop down menu in the Which? Switch savings calculator. However, we don't feature them on the results page which shows the savings you could make by switching your energy supplier.

Which? Switch uses a unique tariff ratings system based on our own customer satisfaction survey data as well as information about energy suppliers and gas and electricity tariffs. This gives you an additional way to compare energy companies.