A fixed rate tariff secures your unit rates and standing charges for the length of your contract.
That means predictable pricing and protection from rising wholesale market rates.
If energy prices rise, yours don't. Your bill only changes based on how much energy you use, not what's happening in the energy market.¹
We offer fixed rates for 12, 18 or 24 months, so you can choose how long you want that security for.

| Feature | Fixed-rateTariff | Standard Variable Tariff | Green Tracker Tariff |
|---|---|---|---|
| Rate stability (per kWh) | Rate doesn't change for the length of your contract | Rate changes in line with the price cap every 3 months | Rate changes with the price cap every 3 months, but stays £50 lower |
| Early exit fees (if you leave the contract before it ends) | Early exit fees of £75 per fuel for 12-month contract, and £95 per fuel for 18 and 24-month contracts | No contract, so no early exit fees | Early exit fees of £50 per fuel |
| Contract length | Choose from 12, 18 or 24-month contracts | No contract. | 12-month contract |
| Sustainability | 100% renewable electricity | A mix of renewable and non-renewable electricity | 100% renewable electricity |
| Who it suits best | Customers who want price stability, protection from market price rises and renewable electricity | Customers who don't want a contract, and prefer flexibility | Customers who want renewable electricity and flexible rates with a guaranteed £50 saving against the price cap |

We’ll let you know in plenty of time before your contract finishes. You can choose a new fixed rate tariff or move to our So Green Tracker or So Flex, our standard variable tariff – whatever works best for you.
Yes, but fixed rate tariffs usually have early exit fees, depending on the length of your contract. Check your tariff details before switching.
It’s only your rates that don’t change. Your energy bill will still vary depending on how much energy you use. Fixed tariffs aren’t affected by the price cap or market price rises.
If you pay by Direct Debit, you can choose seasonal payments. This means you’ll pay less in summer, when your energy use is lower, and more in winter, when your energy use goes up.
The other option is to pay the same amount each month so you build up a little credit on your account in summer, which you can then use over the colder months. You can manage your payment amount in your online account.
No, but we recommend one for accurate bills, and automatic meter readings. Plus, you can see your energy use in your account, or on your In-Home Display, and see ways to cut energy use and save money. You can also get access to smart and tracker tariffs that can save you more money.