Checking you are getting a good deal on electricity and gas is something you should check at least annually. You can often save a significant amount by switching suppliers. It can be difficult to compare though because the total price is comprised of daily standing charges and unit prices for electricity and gas. I’ve produced a simple spreadsheet so that you can enter the tariff details from the supplier’s website and compare them with other suppliers. You can get your kWh energy usage from your latest bill so that you get an accurate comparison. You can download the spreadsheet from the Resources section of this website. You also need to be aware of any exit fees on any deals because these are often expensive.