Dual fuel Switching renewal guide: when & how to switch

Managing Your Gas and Electricity Tariffs

Navigating the energy market can feel complex, but understanding your options is the first step toward managing your household bills more effectively. A dual fuel tariff, which combines your gas and electricity supply with a single provider, offers convenience and can lead to savings. This guide provides a clear path for when and how to consider switching.

This guide is intended for UK homeowners and tenants who manage their own energy bills. If you are looking to simplify your payments, find a more competitive rate, or understand the switching process better, the following information will prove invaluable. It is particularly relevant for those whose fixed-term contracts are ending.

Understanding Key Energy Concepts

To make an informed decision, it is essential to be familiar with the fundamentals of energy tariffs. A dual fuel tariff consolidates your gas and electricity into one account with one supplier. This simplifies administration, providing you with a single bill and one point of contact for any queries. As of October 2025, the average UK dual fuel bill is approximately £1,755 per year, though this figure varies based on usage and location.

Understanding your tariff isn’t just about the total cost- it’s about knowing what you pay for in real terms.

Here are some common terms:

• Tariff: The pricing plan you are on with your energy supplier.
• Unit Rate: The price you pay per unit (kWh) of gas or electricity you use.
• Standing Charge: A fixed daily amount you pay for your connection to the energy network, regardless of usage.
• Cooling-Off Period: A 14-day window after you agree to a new contract during which you can cancel without penalty.

Exploring Your Tariff Choices

When you compare dual fuel deals, you will encounter several types of tariffs. The most common are fixed-rate and standard variable-rate tariffs.

• Fixed-Rate Tariffs: The unit price of your energy is fixed for a set period, typically 12, 18, or 24 months. This protects you from price rises but means you won’t benefit from any price drops.
• Standard Variable-Rate Tariffs (SVRs): The unit price can go up or down depending on wholesale energy market movements. They offer flexibility as they don’t usually have exit fees.

Sustainable Energy Options

For the environmentally conscious consumer, many suppliers now offer ‘green’ dual fuel tariffs. These plans guarantee that some or all of the electricity you use is matched with purchases of renewable energy, such as from wind or solar farms.

Smart Meter Integration

Dual fuel tariffs are fully compatible with smart meters. These devices automatically send meter readings to your supplier, ensuring accurate bills. They also provide real-time information on your energy consumption, helping you identify opportunities to reduce usage and save money.

Analysing Costs and Market Conditions

While a dual fuel tariff offers convenience, it is not automatically the cheapest option. Sometimes, sourcing your gas and electricity from separate suppliers can result in a lower overall cost. It is therefore crucial to compare all available options.

Energy prices in 2025, while lower than the peak seen in early 2023, are expected to remain higher than pre-crisis levels. This market volatility makes it more important than ever to review your contract regularly.

One significant factor to consider is exit fees. If you are on a fixed-term contract, your supplier may charge you a fee for leaving before the end date. Always check the terms of your current agreement before initiating a switch to avoid unexpected costs.

The Switching Process Explained Step-by-Step

Switching your energy supplier is a regulated and straightforward process designed to be seamless for the consumer. The Energy Switch Guarantee ensures it is quick and hassle-free.

1. Gather Your Information: Find a recent energy bill. This contains your current tariff details and energy consumption.
2. Use a Comparison Tool: Input your postcode and usage data into an accredited price comparison website to see available tariffs.
3. Choose Your New Deal: Select the tariff that best suits your needs, considering price, contract length, and customer service ratings.
4. Complete the Application: Provide your details to the new supplier. They will manage the entire switching process from this point.
5. Wait for Confirmation: Your new supplier will contact your old one and confirm a switch-over date.
6. Utilise the Cooling-Off Period: You have 14 days to change your mind after agreeing to the switch.
7. Enjoy a Smooth Transition: The switch typically completes within three to five working days, with no interruption to your gas or electricity supply.

Weighing the Pros and Cons

Deciding on a dual fuel tariff involves balancing convenience against potential savings. Here is a comparison:

Key Considerations Before You Switch

Before finalising your decision, take a moment to review these critical points:

• Always Compare: Do not assume your current supplier is offering the best renewal deal. Use an impartial comparison tool to survey the entire market.
• Check for Exit Fees: Confirm whether your current contract includes early termination fees and factor them into your cost calculations.
• Read Customer Reviews: Price is not the only factor. Check recent customer service reviews for any potential new supplier to ensure they offer reliable support.
• Understand the New Terms: Be clear on the contract length, unit rates, standing charges, and any exit fees associated with the new tariff.

Beyond Switching: Alternative Saving Strategies

Switching tariffs is an effective way to manage costs, but it is not the only one. You can achieve further savings by reducing your energy consumption.

Consider implementing energy efficiency measures in your home, such as improving insulation, draught-proofing windows and doors, and upgrading to energy-efficient appliances. Simple habits, like turning off lights and unplugging devices, also contribute.

Furthermore, investigate government-funded schemes, such as the Great British Insulation Scheme, which can provide financial support for home energy efficiency upgrades, helping you reduce your consumption and bills permanently.

Frequently Asked Questions

What exactly is a dual fuel tariff?

A dual fuel tariff is a single energy plan that covers both your gas and electricity from the same supplier. It simplifies billing and account management.

Will my energy supply be cut off during a switch?

No. The switching process is seamless, and your energy supply will not be interrupted at any point. The switch is handled between your old and new suppliers.

How long does it take to switch to a new dual fuel provider?

The switch is typically completed within three to five working days, thanks to the Energy Switch Guarantee.

Can I get a dual fuel tariff if I have a smart meter?

Yes. Most suppliers offer dual fuel tariffs that are compatible with smart meters. A smart meter can even make managing your dual fuel account easier by providing automatic readings.

Are there any hidden costs when switching?

The main cost to be aware of is a potential early exit fee from your current supplier if you are on a fixed-term contract. The switching service itself is free.

Is a dual fuel tariff always the cheapest option?

Not necessarily. While they often come with discounts, it can sometimes be cheaper to get your gas and electricity from different suppliers. Using a comparison tool is the only way to be certain you are getting the best deal.

Your Next Steps to a Better Energy Deal

Now that you are equipped with the necessary knowledge, your path to a better energy deal is clear. The most crucial action is to compare the options available to you.

Start by using an accredited comparison tool to see how your current tariff measures up against the latest deals on the market.

Before committing, review your latest bill and check the terms of your current contract, paying close attention to the end date and any exit fees. Making an informed choice empowers you to take control of your household energy costs.

This article is for informational purposes only and does not constitute financial advice. Energy prices are subject to change, and the availability of tariffs can vary. Always conduct your own research and use an Ofgem-accredited price comparison tool to find the best deal for your circumstances.