Energy prices constitute a significant portion of household bills. With the energy price cap set to increase by 1.2% in January 2025, many households are seeking better deals to manage rising costs.

Switching energy suppliers can save you money on your gas and electricity bills. And with new deals coming to market frequently, now might feel like a good time to see if you could get a better deal. 

Here, we cover everything you need to know about changing providers so you can find the right energy deal.

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How do I find a new energy supplier?

To start, switching energy suppliers is pretty simple. Here’s how it works:

1. Find a recent bill with details of your current tariff and energy use
2. Use a comparison site like MoneySuperMarket or GoCompare to get quotes from other suppliers
3. Choose a new tariff that suits your needs
4. Start the switch—your new supplier will handle the process
5. Pay your final bill from your old supplier

You'll also need some basic information to switch, such as:

• Your postcode
• Name of current supplier and tariff
• How much energy you use (in kWh) or how much you spend (this will be on your latest bill)
• How you pay (e.g. direct debit, prepayment)
• Your bank details for setting up payment

The comparison site will show you available tariffs and potential savings. Don’t forget to see if your current plan has any exit fees before making the switch.

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How the switching process typically works

Again, the process of switching is more or less as straightforward as finding and identifying a new energy supplier.  

1. Choose your new supplier and tariff
2. Provide your details to start the switch
3. Your new supplier will contact your old one
4. You'll get a welcome pack from your new supplier
5. Take meter readings on the switch date
6. Your old supplier will send a final bill
7. Your new supplier takes over your supply

The whole process usually takes around 21 days. Your gas and electricity supply won't be interrupted—you'll just get bills from a new company.

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What types of energy tariff can I switch to?

This is where things get a little more complex, and there are several types of tariffs to choose from. These include: 

Fixed tariffs

With a fixed tariff, the unit price is fixed for a set period. This is usually 12 to 24 months. The upside here is that you get more price security knowing that your bills won’t increase if tariffs go up. The downside, however, is that you might have exit fees should you wish to exit the deal during the fixed period. For households using energy-efficient technologies like heat pumps, fixed tariffs can provide budget certainty for predictable running costs.

Variable tariffs

When you're on a variable tariff, the price can go up or down depending on a range of factors like wholesale energy costs, market conditions and supplier policies. Variable tariffs usually don’t have exit fees, and prices can drop if energy costs go down. 

The opposite of this is they might go up if prices rise, and they tend to be more expensive than fixed deals. These tariffs can be a good option if you're considering upgrades like solar panels or a heat pump, as they allow you to take advantage of falling energy costs without long-term commitment.

Green tariffs

Green tariffs are becoming more popular as people look to reduce their environmental impact. These tariffs typically promise that some or all of your energy comes from renewable sources like wind, solar or hydro power.

When choosing a green tariff, check how the supplier sources its renewable energy. Some generate it themselves, while others buy renewable energy certificates. Costs vary, but many green tariffs are now competitively priced.

All electricity comes from the same grid, regardless of tariff. Green tariffs support renewable generation rather than directly powering your home with green energy. If you have a heat pump or plan to install one, choosing a green tariff ensures your energy use aligns with your environmental goals.

Economy 7/10

Economy 7 and Economy 10 tariffs offer cheaper rates during off-peak hours, typically overnight. These work best for homes with electric storage heaters or hot water tanks that can heat up during these cheaper periods. 

Economy 7 provides seven hours of lower rates, while Economy 10 offers ten. To benefit, you'll need a special meter and to use most of your electricity during off-peak times. Be aware that daytime rates are usually higher, so timing your usage is key to saving money. Again, these tariffs are also beneficial for heat pump users who can schedule heating during off-peak hours for maximum cost efficiency.

Prepayment

Prepayment tariffs work on a pay-as-you-go basis, using a special meter. You top up credit using a key, card or smartphone app, and your supply stops if credit runs out. These tariffs can help with budgeting and avoiding debt, but they're often more expensive than standard credit meters. 

They're common in some rented properties and for people with poor credit history. While less flexible, they can be a useful option for some households to manage energy costs more actively. For example, you’ll never get a bill that catches you off-guard.

Dual fuel

Dual fuel tariffs bundle your gas and electricity supply from a single provider. This option often comes with a discount, making it cheaper than separate tariffs. It's convenient, as you'll only deal with one supplier and receive a single bill. 

It's not always the cheapest option however. For that reason, it's worth comparing dual fuel deals against separate gas and electricity tariffs. Many suppliers offer dual fuel options, making it easy to switch both services at once and potentially simplify your energy management.

When comparing, look at the unit rates and standing charges, not just the estimated annual cost. Consider how you use energy and what's most important—price certainty, flexibility or environmental impact.

Online tariffs

Online tariffs are energy deals managed entirely through the internet. You'll submit meter readings, view bills and handle customer service online or via an app. These tariffs are often cheaper than standard deals because they reduce the supplier's costs. 

They suit tech-savvy customers comfortable with digital management. While they offer convenience and potential savings, they may not be ideal if you prefer phone or in-person support. 

Always check if you're comfortable with the level of online interaction required before choosing an online tariff. For heat pump users, online tariffs can provide a convenient way to monitor and manage your energy usage alongside smart home technologies.

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Is it worth switching my energy supplier?

For many people, switching their supplier can lead to savings on energy bills. Even if you can't save money right now, you might find a supplier with better customer service or one that aligns with your values, like green energy.

Potential benefits of switching include:

• Lower energy bills
• Better customer service
• More suitable tariff for your usage
• Greener energy options
• Smart meter installation

Switching isn't always beneficial. Check for things like exit fees on your current tariff and compare the full cost of new deals, including standing charges. If you're on a cheap fixed deal, it might be best to stay put until it ends.

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What do I need to know if I want to switch energy suppliers?

Before switching, gather this information:

• Name of current supplier and tariff
• Your energy usage (check recent bills)
• How you pay and how you'd like to pay
• Your postcode
• If you have a smart meter
• If you're in debt to your current supplier

Also consider:

• Any exit fees on your current tariff
• If you want a fixed or variable tariff
• If you prefer managing your account online
• Whether you want a green energy tariff
• If you're interested in getting a smart meter

Remember that the cheapest deal isn't always best. Look at the supplier's customer service ratings and consider what's important to you beyond price.

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When's the best time to switch energy suppliers?

Good times to consider switching your energy supplier include:

• When your fixed tariff is ending (you can switch penalty-free in the last 49 days)
• If your supplier announces a price rise
• Before winter, when energy use typically increases
• When moving house
• If your circumstances change (e.g. working from home more)

It's worth checking deals every six to 12 months. Energy prices change often, so new deals may become available just as you’re looking to move over to a different supplier. 

Again, avoid switching if you'd have to pay a large exit fee that outweighs potential savings. If you're unsure, use a comparison site to see potential savings and factor in any fees.

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How long does it take to switch energy suppliers?

The switching process typically takes around 21 days. Here's a rough timeline:

• Days one to14: Cooling-off period. You can cancel the switch without penalty.
• Days 15 to 20: Your new supplier sets up your account.
• Day 21: The switch completes. Take meter readings and send them to both old and new suppliers.

Some suppliers offer faster switching. If they're signed up to the Energy Switch Guarantee, it should take no more than 21 days.

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What’s the Energy Switch Guarantee?

The Energy Switch Guarantee is a voluntary industry initiative that provides a speedy, safe and simple switch between energy suppliers. Participating suppliers commit to completing the switch within 21 days, handling the entire process, and resolving any issues that may arise during the switch.

Your energy supply won't be interrupted during the switch. You'll just start getting bills from your new supplier.

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Can I switch if I owe money to my current supplier?

You can usually switch if you owe money, but it depends on how long you've been in debt:

• Less than 28 days: You can switch. The debt will be added to your final bill.
• More than 28 days: You'll need to pay off the debt before switching, unless you're on a prepayment meter.
• Prepayment meter: You can switch if you owe £500 or less per fuel. The debt will transfer to your new supplier.

If you're struggling with energy debt, talk to your supplier. They should help you find a way to pay. You might be able to set up a repayment plan or get extra support.

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Maximising your energy savings

While switching suppliers can help reduce your bills, making your home more energy efficient could provide even bigger savings. Create a personalised home efficiency plan to discover improvements that could significantly lower your energy costs and make your home more comfortable, from insulation upgrades to modern heating systems. See what energy efficiency options are available to you.

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FAQs

Will I get a smart meter if I switch suppliers?

It depends on your new supplier's smart meter roll-out. Some tariffs require a smart meter, while others offer them optionally. Ask your new supplier about their smart meter policy when switching.

Smart meters can make managing your energy easier with automatic meter readings, accurate bills and real-time usage information. Some older smart meters, however, may lose functionality when you switch. Check with your new supplier if this applies to you.

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Can I switch my supplier if I rent?

Usually, yes. If you pay the energy bills directly, you have the right to choose your supplier. However, check your tenancy agreement. It may name a 'preferred supplier'; inform your landlord if you switch, especially if installing a smart meter; and if your landlord pays the bills and recharges you, you can't switch without their agreement. Always get your landlord's permission before making any changes that affect the property, like having a smart meter fitted.

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Can I switch if I have a prepayment meter?

Yes, you can switch if you have a prepayment meter. However, your options may be more limited than with a credit meter. Compare prepayment tariffs specifically, or consider switching to a credit meter if possible (you may need to pass a credit check). If you're in debt, you can still switch if you owe £500 or less per fuel. Prepayment meters can be more expensive, so switching to a credit meter could save you money if you're able to.

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Do I need to tell my old supplier I'm switching?

No, you don't need to contact your old supplier. Your new supplier will handle the switch and inform your old supplier. You should take meter readings on the switch date, pay your final bill promptly and cancel any direct debits once the final bill is paid. Your old supplier will send a final bill based on the closing meter readings.

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Can I switch if I have solar panels?

Yes, you can switch if you have solar panels. If you receive payments for generating electricity (Feed-in Tariff or Smart Export Guarantee), these are separate from your energy supply. You can switch your energy supplier without affecting these payments, keep your current FiT/SEG provider when you switch energy supplier or switch your FiT/SEG provider separately if you wis When switching, make sure your new supplier knows you have solar panels so they can set up your account correctly.

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What happens if I change my mind after switching?

All energy suppliers must give you a 14-day cooling-off period. During this time, you can cancel the switch without any penalty. The cooling-off period starts the day after you agree to the switch.

If you cancel during the cooling-off period:

• Contact your new supplier to cancel
• You'll stay with your current supplier
• No exit fees will apply

After the cooling-off period, you may have to pay exit fees if you want to cancel the switch or change to a different supplier.

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Can I switch to a green energy tariff?

Yes, many suppliers offer green tariffs. These usually promise to match your usage with renewable energy. When comparing green tariffs, consider:

• The percentage of renewable electricity and gas
• Whether the supplier generates renewable energy or just buys certificates
• The cost compared to non-green tariffs
• The supplier's overall environmental commitments

Green tariffs aren't always more expensive. Compare different options to find the best deal for you.

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How often can I switch energy suppliers?

There's no limit to how often you can switch suppliers. However, consider exit fees on fixed tariffs (although these don't apply in the last 49 days of your contract), the effort involved in switching frequently and whether frequent switching affects your credit score (multiple credit checks in a short time can have an impact)

It's generally a good idea to review your energy deal every six to 12 months so that you're still on a competitive tariff.

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