Your energy costs with a variable tariff

A variable energy tariff means your unit rates and standing charges can change over time, typically updating every three months. This flexibility allows you to benefit when wholesale energy prices fall, but also means your costs can rise if market conditions worsen. Understanding how these tariffs work, especially in relation to the Ofgem energy price cap, is key to managing your household energy budget effectively.

Understanding your variable tariff is key to managing your energy budget. With Fuse Energy, you get clear visibility into your tariff rates and how they align with the Ofgem Price Cap, helping you make informed decisions about your home's energy. Click here to switch to Fuse Energy today.

What is a variable energy tariff?

A variable tariff, often referred to as a Standard Variable Tariff, is an energy plan where the price you pay per unit of electricity or gas, and your daily standing charge, can fluctuate. Unlike fixed tariffs, which lock in your rates for a set period, variable tariffs adapt to changes in the wider energy market.

How variable tariffs work

The core principle of a variable tariff is that its prices are not fixed. Energy suppliers adjust these rates based on various factors, including the cost of wholesale energy, operational expenses, and regulatory changes. This means your bill can go up or down, reflecting the current state of the energy market.

Key components: unit rates and standing charges

Every energy tariff, whether variable or fixed, is made up of two main components:

• Unit rates: This is the price you pay for each unit (kilowatt-hour, or kWh) of electricity or gas you use.
• Standing charges: This is a fixed daily cost that covers the supplier's expenses for maintaining the energy network and providing customer service, regardless of how much energy you consume.

The Ofgem energy price cap and your variable tariff

The Ofgem energy price cap plays a crucial role in determining the rates for variable tariffs in the UK. It sets a maximum price that energy suppliers can charge per unit of energy for customers on standard variable tariffs, protecting households from excessive costs.

How the price cap is set

Ofgem, the UK's energy regulator, reviews and updates the price cap based on a methodology that considers wholesale energy costs, network costs, operating costs, and other factors. This cap is not a limit on your total bill, but rather a ceiling on the unit rates and standing charges your supplier can apply.

Quarterly updates: when prices change

Variable energy tariffs typically update their unit rates and standing charges quarterly, aligning with the Ofgem energy price cap announcements. These updates usually take effect on 1 January, 1 April, 1 July, and 1 October each year. This predictable schedule allows homeowners to anticipate potential changes to their energy costs.

For the period from 1 July to 30 September 2026, the electricity unit rate under the Ofgem Price Cap is 26.11p per kWh, and the gas unit rate is 7.33p per kWh for Direct Debit customers. The daily standing charge for electricity is 57.19p, and for gas, it is 29.04p for the same period.

Impact on your bills

When the price cap changes, your variable tariff rates will adjust accordingly. If the cap rises, your unit rates and standing charges will likely increase, leading to higher bills if your usage remains constant. Conversely, if the cap falls, your costs should decrease. This direct link means that understanding the price cap is essential for anyone on a variable tariff.

Benefits of choosing a variable tariff

While variable tariffs are often seen as a default option, they offer distinct advantages, particularly for homeowners who value flexibility and responsiveness to market changes.

Flexibility with no exit fees

One of the most significant benefits of a variable tariff is the absence of exit fees. This means you can switch to another tariff or supplier at any time without incurring a penalty1. This flexibility is invaluable if a more competitive fixed-rate deal becomes available, or if your energy needs change. It empowers you to actively manage your energy plan, rather than being locked into a long-term contract.

Benefiting from falling wholesale prices

When wholesale energy prices drop, variable tariffs are usually the first to reflect these savings. Unlike fixed tariffs, which keep your rates constant regardless of market movements, a variable tariff allows you to benefit from lower costs sooner. This can lead to significant savings during periods of market stability or decline.

Simplicity and transparency

Variable tariffs are generally straightforward to understand. Their rates are directly influenced by the publicly announced Ofgem Price Cap, offering a clear and transparent pricing structure. This makes it easier to track how your energy costs are determined and to compare them against the cap.

Risks and considerations

Despite their benefits, variable tariffs come with inherent risks, primarily due to their fluctuating nature. Being aware of these can help you make an informed decision.

Price volatility and market changes

The main drawback of a variable tariff is the potential for price volatility. Rates can increase if wholesale energy costs rise, leading to higher bills. Geopolitical events, supply chain issues, or sudden changes in demand can all impact wholesale prices, which then feed into your variable tariff.

Potential for higher costs

In periods of rising energy prices, a variable tariff can become more expensive than a fixed tariff that was secured when prices were lower. While the Ofgem energy price cap provides a ceiling, it doesn't prevent rates from increasing up to that maximum.

Monitoring your usage

To mitigate the risks of a variable tariff, it's crucial to monitor your energy usage regularly. Understanding how much electricity and gas your household consumes allows you to anticipate bill changes and adjust your habits if rates increase. The average UK home uses around 2,500 kWh of electricity and 9,500 kWh of gas per year, which can serve as a benchmark for your own consumption2.

Variable vs fixed tariffs: making the right choice

Deciding between a variable and a fixed tariff depends on your priorities, risk tolerance, and market outlook. Both have their place, and the "best" option can change over time.

Price stability vs flexibility

• Fixed tariffs: Offer price stability, meaning your unit rates and standing charges remain constant for the duration of your contract, typically between 12 and 18 months. This provides predictability for budgeting. However, they usually come with exit fees if you leave early.
• Variable tariffs: Provide flexibility with no exit fees, allowing you to switch whenever you want. This means you can react quickly to market changes, benefiting from falling prices but also being exposed to increases.

Contract length and exit fees

Fixed tariffs have a defined contract length and often include exit fees if you decide to leave before the term ends. Variable tariffs, on the other hand, have no end date and no exit fees, giving you complete freedom to switch without penalty.

When to consider each option

• Choose a variable tariff if: You value flexibility, want to benefit from potential drops in wholesale prices, or believe energy prices are likely to fall. It's also a good option if you anticipate moving home soon, as you won't be tied into a contract.
• Choose a fixed tariff if: You prioritise budget certainty, want to protect yourself from potential price increases, and are comfortable committing to a contract for a set period.

Is a variable tariff right for your home?

Making an informed decision about your energy tariff requires a clear understanding of your household's needs and the broader energy market.

Assessing your energy needs

Consider your household's typical energy consumption patterns. Do you have high usage, or are you able to be flexible with when you use energy? Your ability to adapt to price changes can influence whether a variable tariff is a good fit.

Staying informed about market conditions

For those on a variable tariff, keeping an eye on energy market forecasts and Ofgem's price cap announcements is crucial. This allows you to anticipate changes and decide if it's time to switch to a fixed deal or continue enjoying the flexibility of your variable plan.

Switching with Fuse Energy

Fuse Energy positions its variable tariff as a strategic choice for homeowners seeking active control and flexibility over their energy costs. Fuse provides clear visibility into tariff rates and how they align with the Ofgem Price Cap's quarterly updates, empowering you to make informed decisions. With no exit fees, Fuse's variable tariff allows you to react quickly to market changes, embodying a "never settle" belief by not trapping you in unfavourable deals. Plus, customers on Fuse's variable tariff have access to human customer support for any questions about their rates or energy usage.

Managing your energy bills should be clear and easy to understand. Fuse Energy focuses on straightforward pricing, so you can see exactly what you're paying without unnecessary complexity. If you have a smart meter, you can view detailed usage data through the app or website, helping you understand how you can lower your bills. If you don't have a smart meter, Fuse Energy can upgrade your non-smart meter, completely for free. Our human support team is always on hand with fast response times whenever you need help. Click here to switch to Fuse Energy today. Find out about our mission by clicking here.