Back to top

Fixed price energy tariff explained

Fixed price energy tariff explained

Share this guide:

Last updated: 11 May 2021

A fixed price energy tariff is a type of gas and electricity tariff that sets the price of your energy consumption for the length of your contract. These types of contracts are designed to protect you from sudden energy price rises. Read on to find out more about this type of tariff and how they work.

Save up to £580* per year on your energy bills

Upgrading to a new boiler is a great way to save money on your energy bills, and is probably cheaper than you think it will be!

*Upgrading a G-rated to an A-rated boiler in a detached house will save £580 a year on average

What is a fixed price energy tariff?

Fixed price gas and electricity tariffs ensure that the price you pay for each unit of energy will be the same throughout the length of the contract (which is between one and four years). This does not necessarily mean that you will pay the same amount on bills each month, as the unit price is fixed – the more units of energy you use, the more your bills will be. This means that if your supplier’s prices rise, this will not affect your bills. 

This is different from a standard variable tariff, which has a certain defined price for the use of energy, but these prices can change. With these there is also no contract, whereas there is one for fixed energy tariffs.

Otherwise, Fixed Price Energy Tariffs are pretty similar to other types of tariffs; they have a standard charge (although you can take it out as a no standing charge tariff if you can find one!), and you can also take it out with an economy 7 or 10 meter if you have one installed.

What are the benefits of a fixed price energy tariff?

Fixed-price energy tariffs are often cheaper than variable tariffs, with most supplier's average annual variable tariffs being more expensive than their cheapest tariffs - which are mostly fixed price tariffs:

Supplier Supplier's average annual standard variable tariff Supplier's cheapest annual average tariff
British Gas £1041 £1041
E.ON £1042 £884
EDF £1042 £989
Scottish Power £1042 £923
npower £1042 £885
Shell Energy £1042 £895
OVO Energy £1042 £981
Utility Warehouse £1037 £955
Green Network Energy £1022 £884
Bulb £958 £958
Avro Energy £997 £871
Octopus Energy £964 £926

Source: Ofgem

Also, you will be protected from energy prices increasing since your rates are fixed. It is also easier to manage your budget if you know the cost per unit of energy throughout the contract, as your bills will be the same if you use the same amount of energy each month. You also have a wide choice of suppliers, since most suppliers offer a fixed tariff. 

Save money on your energy bills

Enter your postcode below to get started

Please enter valid UK postcode.
Privacy notice information
We value your privacy; we only use your postcode to compare offers in your area.

Are there any downsides to fixed price energy tariffs?

  • Fixed-price energy tariffs usually start off more a bit more expensive than a standard variable tariff, the idea being that if/when the cost of gas or electricity goes up you will then be getting a good deal on your energy. The longer your contract, the higher the price you will pay per KWH (usually) for this very same reason - energy suppliers will want to protect themselves as much as they can long term. 
  • Although you are protected from energy prices increasing, you will not take advantage if the costs go down. 
  • Also, you may have to pay exit fees if you decide to switch before the end of your contract. These can range from between £25-£50, and may have to be paid for each fuel type.

What to do at the end of your fixed tariff

At the end of the tariff, you should find out which plan your supplier will move you to. This will likely be the supplier’s ‘Standard Plan’ (which is variable). You may be offered the chance to take a fixed tariff again, so you may wish to do so. Once you know which plan you are being moved to, you can compare energy plans online to compare it to other deals, or switch energy supplier if you could save more with a different supplier.  You will have a specific date that it ends at, but you can switch your tariff 49 days before the end date without an exit fee. 

Can I switch to a fixed price energy tariff?

Yes, and the process is handled by the company you are moving to. Switching energy suppliers is now easier due to the Energy Switch Guarantee, which means you are guaranteed to a switch within 21 days. You will stay on your current tariff until the process is complete, and you will not be without gas and electricity at any moment. When you switch, credit from your old account will be refunded within 14 days of your previous energy bill, and if you change your mind within these 14 days, you can stay with your previous supplier. 

Compare fixed price energy tariff

To compare fixed price tariffs and switch energy supplier with usave, enter in your postcode below 

Save money on your energy bills

Enter your postcode below to get started

Please enter valid UK postcode.
Privacy notice information
We value your privacy; we only use your postcode to compare offers in your area.

We are an independent and impartial price comparison website.


Our services are 100% free to use.

check is supported by its users. When you make a purchase through links on our site, we may earn an affiliate commission.

Emily Patel

Author: Emily Patel

Emily is an MA student and freelance writer. In addition to her work on at usave, she has written many film and theatre reviews, from comedy to horror. In her spare time, she enjoys swimming and travelling.

Don't miss these

A Selection of Trusted Energy Suppliers

Read on our blog

With the government poised to implement tough new measures to...

TalkTalk Confirms Huge Bills Hikes from Friday
30. 03. 2022 | Lauren Smith

Budget broadband provider TalkTalk has been notifying customers via email...

A year-long investigation by charity Citizens Advice has revealed a...

All English Schools Will Have Gigabit Broadband by 2025
23. 03. 2022 | Lauren Smith

Education Secretary Nadhim Zahawi has announced a new commitment to...