Frequently Asked Questions

Which? Switch gives you access to the very latest energy tariffs and payment options across different suppliers offering you an overall picture of the energy market at the click of a button, saving you hours of research. You can also compare across a variety of tariff types such as the cheapest fixed rate or green tariff.

We're impartial, independent and not-for-profit. Which? Switch gathers all the available tariffs, taking into consideration hidden charges and exit fees, and compares the cheapest ones that suit individual circumstances.

We're on hand to assist and offer advice on post-switch complaints if you have any problems. A customer switching directly with a supplier would need to resolve any problems themselves.

We give you access to the same energy tariffs and payment options as you would receive directly from an energy supplier, although, on some occasions energy suppliers have the discretion to offer additional discounts direct to customers. On the other hand, sometimes they pass these discounts to customers via switching sites such as Which? Switch.

Which? Switch compares different types of gas and electricity tariffs, including:

• Capped energy tariffs
• Online energy tariffs
• Dual-fuel energy tariffs
• Economy 7 electricity tariffs
• Fixed energy tariffs
• Greener energy tariffs
• Loyalty points energy tariffs
• Prepayment energy tariffs
• Smart meter tariffs

For full details of these energy tariffs and their pros and cons, see our energy tariffs section.

Once you've entered information about your current energy usage and your present energy supplier in the Which? Switch savings calculator and clicked on Show Savings, you'll see a list of energy suppliers and how much they would charge you based on your current usage.

Figures shown in black indicate the estimated saving you would make if you switched to that supplier. If switching to a particular supplier will increase your bills, rather than making savings, then the estimated extra amount you would be paying will be shown in red.

Sometimes customers choose to switch to a more expensive energy tariff if it fulfills other more important criteria for them, such as being 'green' or offering benefits such as loyalty points.

Customers who have been on a tariff for a long fixed term may be unable to find a cheaper deal due to price rises in the intervening period.