Fixed energy tariff: what you need to know

Fixed energy tariff: what you need to know

A fixed energy tariff locks in the unit rates you pay for electricity and gas, alongside your daily standing charge, for a set contract period. This typically lasts between 12 and 18 months, offering predictability for the cost of each unit of energy you use, regardless of wider market fluctuations. While the price per kilowatt-hour (kWh) and your daily standing charge remain constant, your total monthly bill will still vary based on how much energy your household consumes.

Understanding fixed energy tariffs can help you manage your household budget more effectively. Fuse Energy aims to provide clear pricing and tools to help you take control of your energy costs. Click here to see how easy it is to switch to Fuse Energy today.

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Understanding fixed energy tariffs

Defining 'fixed' in energy pricing

When you choose a fixed energy tariff, your supplier agrees to charge you a specific price per unit of energy (pence per kWh) and a daily standing charge (pence per day) for the entire duration of your contract. This rate is agreed upfront and will not change, even if wholesale energy prices rise or fall. This differs significantly from variable tariffs, where unit rates can fluctuate with the market.

What exactly is fixed in a fixed tariff?

In a fixed energy tariff, the unit rate (pence per kilowatt-hour) for your electricity and/or gas, and the daily standing charge, are locked for the contract duration. This means the cost per unit of energy consumed remains constant, providing a stable pricing structure for your energy usage.

How fixed tariffs provide predictability

Fixed tariffs offer a powerful advantage: predictability. They shield you from sudden increases in wholesale energy prices, which can otherwise lead to unexpected jumps in your bills. This certainty allows for more effective budgeting and reduces the anxiety often associated with fluctuating energy costs. It's a strategic move to gain control over one significant household expense, aligning with a vision of having "power to play with" in your personal finances.

How fixed energy tariffs work

Unit rates and standing charges explained

Your energy bill is primarily made up of two components: unit rates and standing charges. The unit rate is the price you pay for each kWh of electricity or gas you use. The standing charge is a fixed daily fee that covers the cost of supplying energy to your home, including maintaining the grid and other operational costs. On a fixed tariff, both these components are set for the contract term.

Contract lengths and exit fees

Fixed tariff contracts typically last between 12 and 18 months. During this period, your unit rates and standing charges are guaranteed. However, if you decide to leave your fixed tariff before the contract ends, you may incur exit fees. These fees are tariff-specific, and the exact amount will be shown at sign-up and in your tariff's details in the app. For example, some suppliers charge around £50 per fuel, but this can vary. It's crucial to check for and understand these fees before committing to a fixed deal. You can usually switch without exit fees if your contract ends within 49 days.

The role of your energy consumption

While fixed tariffs lock in your unit rates and standing charges, they do not guarantee a fixed monthly bill. Your total bill will still depend on how much energy you consume. Using more electricity or gas will result in a higher bill, even with fixed unit rates. Monitoring your energy usage remains essential for managing your overall costs. Tools like a smart meter can help you track your consumption more accurately.

Benefits of a fixed energy tariff

Price certainty and budgeting

The primary benefit of a fixed energy tariff is the certainty it brings to your energy costs. Knowing exactly what you'll pay per unit of energy allows for more accurate budgeting, helping you manage household expenses with greater confidence and potentially leading to energy bill savings. This stability can be a significant relief, especially during periods of economic uncertainty.

Protection from market volatility

Fixed tariffs act as a buffer against rising wholesale energy prices. If market prices increase, your fixed unit rates remain unchanged, protecting you from higher costs. This can be a powerful play, turning potential market instability into personal financial stability.

Peace of mind and reduced anxiety

Beyond the financial benefits, a fixed tariff offers significant peace of mind. The constant worry about rising energy bills can be a considerable mental load. By securing your rates, you remove this source of anxiety, freeing up mental space to focus on other aspects of your life. It's an empowering move that challenges the scarcity mindset, offering predictability as a form of abundance.

Potential drawbacks of fixed tariffs

Missing out if prices fall

One potential drawback is that if wholesale energy prices fall significantly during your contract, you might end up paying more than customers on variable tariffs or new fixed deals. You would be locked into your higher, pre-agreed rates. This is a risk to weigh against the benefit of price certainty.

Exit fees for early departure

As mentioned, leaving a fixed tariff before its contract term ends can result in exit fees. These fees are tariff-specific and apply if you are outside the cooling-off period (the first 14 days) and not in the final 49 days of your contract. Always factor these potential costs into your decision.

Limited flexibility

Fixed tariffs offer less flexibility than variable tariffs. You are committed to your chosen supplier and rates for the duration of the contract. If you find a significantly better deal elsewhere, the exit fees might make switching uneconomical. This limited flexibility means careful consideration is needed before fixing.

Fixed versus variable energy tariffs

Key differences and the energy price cap

The main difference lies in how prices are set. Fixed tariffs lock in your unit rates and standing charges for a set period, while variable tariffs can see these prices change, typically quarterly, in line with market conditions. Ofgem's Energy Price Cap primarily applies to standard variable tariffs, setting a maximum unit rate and standing charge that suppliers can charge. Fixed tariffs are not subject to this cap, meaning their rates can be higher or lower than the cap depending on market conditions at the time of purchase.

Which tariff type is right for you?

Choosing between a fixed and variable tariff depends on your personal financial situation and risk tolerance. If you prioritise budget certainty and protection from potential price hikes, a fixed tariff might be the right choice. If you're comfortable with market fluctuations and are prepared to switch if prices fall, a variable tariff, potentially with agile pricing, could offer more flexibility.

Making an informed decision on your energy tariff

Assessing your needs and risk tolerance

Before committing to a fixed tariff, assess your household's energy consumption and your financial risk tolerance. Consider how much you value price certainty against the possibility of missing out on lower prices if the market shifts downwards. Understanding your priorities will guide you to the most suitable option.

Comparing deals and switching providers

Always compare available fixed energy deals from various suppliers. Pay close attention to the unit rates, daily standing charges, contract duration, and any associated exit fees. Tools and comparison websites can help you evaluate different options. When you're ready to switch, ensure you understand the terms and conditions of your new tariff. Making an informed decision is a power play that puts you in control.

Fuse Energy provides transparent terms and straightforward pricing, empowering you to make confident choices about your energy. We offer 24/7 human customer support and a modern energy experience designed around you. Signing up takes just a few minutes, so you can take control of your bills from day one. Click here to switch to Fuse Energy today.

Published on 7 Jul 2026

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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.