Fixed energy deal: price stability explained

Fixed energy deal: price stability explained

A fixed energy deal locks in the unit rate you pay for electricity and gas, shielding your household from market price increases for a set period. This offers clear budget predictability, allowing you to manage your finances with confidence. This guide explores how fixed deals work, their advantages and potential drawbacks, and how to choose the right one for your home.

Looking to secure predictable energy bills for your home? Fuse Energy offers fixed tariffs designed to give you certainty over your energy costs. Click here to switch to Fuse Energy today.

Enter your address to get a quote and see how much you could save

What is a fixed energy deal?

A fixed energy deal, often called a fixed tariff, means the price you pay per unit of electricity and gas remains constant throughout your contract. This unit rate is typically measured in pence per kilowatt-hour (kWh). Unlike variable tariffs, your unit rate will not change even if wholesale energy costs fluctuate. Fixed energy deals usually last between 12 and 18 months.

Unit rates and standing charges

When you sign up for an energy deal, you will encounter two primary components: the unit rate and the standing charge. The unit rate is the cost for each unit (kWh) of energy you consume. The standing charge is a fixed daily fee that covers the cost of supplying energy to your property, regardless of how much you use. This charge covers things like maintaining the energy network and other operational costs. Both the unit rate and the standing charge are typically included in a fixed energy deal.

Fixed vs variable tariffs

The main difference between fixed and variable tariffs lies in price stability. With a fixed tariff, your unit rates and standing charges are locked in for the duration of your contract. This means your energy costs per unit will not change, offering predictability. In contrast, a variable tariff means your unit rates and standing charges can fluctuate, typically changing quarterly in line with the energy price cap set by Ofgem. While the energy price cap influences the pricing of new fixed deals, it does not directly apply to fixed tariffs themselves.

How fixed energy deals work

Fixed energy deals provide a set price for your energy for a predetermined period. This allows you to budget effectively, knowing what you will pay for each unit of electricity and gas, regardless of market movements.

Contract length and terms

Fixed energy deals typically last between 12 and 18 months. During this period, your unit rates and standing charges remain constant. Energy suppliers must clearly communicate all contract terms, including these rates, the contract length, and any associated exit fees. It is crucial to understand these terms before committing to a deal.

Understanding exit fees

Many fixed energy deals include exit fees. These are charges you might incur if you decide to leave your contract before the agreed-upon end date. The amount of the exit fee can vary significantly between suppliers and deals, so always check this detail carefully.

What is an exit fee?

An exit fee is a charge applied by an energy supplier if you terminate your fixed energy contract before its agreed end date. These fees can vary, so always check the terms before signing up.

Benefits of a fixed energy tariff

Choosing a fixed energy tariff can be a proactive move for financial control, offering significant advantages for UK households concerned about fluctuating energy costs.

Budget predictability and peace of mind

One of the primary benefits of a fixed energy deal is the predictability it brings to your household budget. Knowing that your unit rates will not change for a set period allows you to forecast your energy expenditure more accurately. This stability can provide considerable peace of mind, especially during times of market volatility.

Protection from price rises

Fixed energy deals protect you from sudden increases in wholesale energy prices. If market prices for gas and electricity rise during your contract term, your unit rates remain the same. This shields you from the financial impact of such fluctuations, offering a stable cost even when the wider market is turbulent.

Potential drawbacks and considerations

While fixed energy deals offer stability, they also come with potential drawbacks that you should consider before signing up.

Missing out on potential price drops

The main downside of a fixed deal is that you might miss out if wholesale energy prices fall significantly. If market rates drop below your fixed unit rate, you will still be paying the higher, locked-in price. This is the trade-off for the security against price rises.

Exit fees and switching limitations

As mentioned, most fixed deals come with exit fees. If you find a cheaper deal elsewhere or your circumstances change, these fees can make switching before your contract ends financially unviable. The energy switching process in the UK typically takes up to 5 working days. However, planning is essential to switch within the final 49 days of your fixed term to avoid exit fees.

What happens when your fixed deal ends?

Planning for the end of your fixed deal is just as important as choosing the right one. Understanding your options can help you avoid unexpectedly higher bills.

Rolling onto a variable tariff

When your fixed energy deal concludes, your supplier will typically roll you onto their Standard Variable Tariff (SVT). These tariffs are subject to the energy price cap set by Ofgem, meaning their rates can change quarterly. Moving to an SVT often results in higher unit rates and standing charges compared to your previous fixed deal, so it is wise to act before this happens.

Reviewing new fixed offers

Before your fixed deal ends, your supplier is required to notify you of its upcoming expiry and present you with new offers. This is an ideal time to review your options. You can compare new fixed deals from your current supplier and other providers to find the best value for your needs. Ofgem regulates energy suppliers in Great Britain, ensuring rules for tariffs, switching, and customer protection are followed.

Choosing the right fixed energy deal for your home

Making an informed decision about a fixed energy deal involves a few key steps to ensure it aligns with your household's needs and financial situation.

Assessing your energy usage

Start by understanding how much energy your household typically uses. Your annual electricity and gas consumption figures, usually found on your energy bills, are crucial for comparing deals accurately. Understanding your usage can also help you identify potential energy bill savings. This helps you estimate your total cost under different tariffs.

Comparing deals and supplier reputation

Research and compare available fixed energy deals from multiple suppliers. Look beyond just the unit rates; consider the standing charges, contract length, and any exit fees. Understanding different pricing models, such as agile pricing, can also help you make an informed choice. Platforms like Fuse Energy provide clear, easy-to-understand information about fixed tariffs, allowing you to manage your deal with confidence.

The importance of customer support

When choosing a supplier, consider the quality of their customer support. Knowing that you can get help when you need it can make a significant difference to your experience. Fuse, for example, offers 24/7 human customer support to help customers understand their fixed deal and address any concerns, ensuring peace of mind. This commitment to transparency and support empowers customers to take control of their energy costs, turning a defensive move into a strategic advantage.

Choosing the right fixed energy deal can bring stability to your household budget. At Fuse Energy, we believe in making energy simple and transparent. We offer clear pricing, real-time usage data through our app, and 24/7 human customer support to help you manage your energy with confidence. Switching to Fuse is quick and easy, allowing you to take control of your energy costs. Click here to switch to Fuse Energy today and discover a smarter way to power your home. You can also learn more about our mission to make energy abundant by clicking here.

Published on 12 May 2026

Share

Disclaimer

For the avoidance of doubt, this article is provided for informational purposes only and is not intended to constitute legal or financial advice. The author and/or Fuse Energy shall not be responsible for any losses arising out of any reliance on the information contained herein.

Fixed energy deal: price stability explained