How to compare energy tariffs

Use this guide to choose an energy tariff that's right for you

Our website is designed to make comparing energy tariffs as easy as possible. There might still be some elements that need explaining though, especially for those who’ve never switched before. Price is the prime consideration for many people, but there’s other factors that you should be aware of before deciding which tariff is right for you.

Our comparison page

Once you’ve filled in your postcode, existing supplier details and usage/cost, we’ll show you tariffs from every UK supplier in a comparison table.

The table shows lots of information to help you decide which one is right for you. In addition to how much each tariff will save you, we also show you whether it’s fixed or variable, how long you’re tied in for, any cancellation fees, customer service ratings and an estimated annual cost. If you’re looking for a specific type of plan (e.g. renewable), you can also filter the results.

Some of these features are explained in more detail below.

Fixed/variable tariffs

A fixed tariff guarantees standing charges and unit costs until a specific date. This is good if you want peace of mind knowing what your costs will be for the fixed term period, although be aware that if you use more energy than you anticipated, your bill will go up. Fixed prices are often cheaper than supplier’s standard rates, so they’re definitely worth considering.

One thing to be aware of with fixed tariffs is that if energy prices go down, you won’t benefit as your costs are fixed. If you’d rather take a gamble on costs coming down, a variable rate tariff might be for you.

Personal projection (estimated annual cost)

To help you compare annual costs on different tariffs, we include a Personal Projection. Because your usage can vary in any given year, it’s not possible to provide exact annual costs, but our Personal Projections give you as accurate a cost as possible.

We take into consideration different elements of your current supplier’s tariff, for example if you’ve come to the end of a fixed rate deal and you’ll find detailed breakdowns of how this projection is worked out.

Tariff end date

This is the date on which your tariff ends. For example, if you switch to a fixed rate tariff, this would be the date that those fixed rates would end. Many suppliers would automatically switch you over to their standard rate at this point, which almost certainly won‘t offer great value.

It’s therefore important to do another comparison around this time and see what savings you could get by switching again. If you register for our free Price Watch service, we’ll be watching the market for you and will let you know as soon as you could make a saving. It’s also worth knowing that you can switch up to 49 days before your tariff end date without incurring a cancellation fee.

Cancellation fees

A cancellation fee (sometimes called a termination fee or exit fee) is a charge that your new supplier would impose if you left before your tariff end date. These can anywhere from zero to over £100, so it’s important to bear this in mind when choosing a new tariff. Obviously if you have no intentions of switching before your tariff end date, it’s not an issue and don’t forget you can switch up to 49 days before your tariff end date without incurring a cancellation fee.

Customer service

Everyone wants to save money on their energy, but most also want to be confident that their new supplier will treat them well and offer good customer service, should you have any cause to get in touch. We show a Service Rating in our comparison table, so that you can consider that aspect when choosing a new tariff. 

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