Understanding Prepayment Meters and Switching Energy Suppliers

Understanding Prepayment Meters and Switching Energy Suppliers

A prepayment meter is a type of gas or electricity meter that requires you to pay for your energy before you use it. Instead of receiving a monthly or quarterly bill, you top up your meter using a key, card, or app – usually at local shops, online, or via your supplier’s app. The money you add is then used as you consume energy, making it easier to monitor and control your spending. Prepayment meters are common in rented properties or where there have been issues with unpaid bills in the past. For more on your rights and responsibilities, especially if you rent, see our guide to utilities and energy supply.

Many people with prepayment meters consider switching energy suppliers for several reasons. You might be looking for a better deal, lower tariffs, or improved customer service. Switching can also be helpful if you’re unhappy with how your current supplier manages your account, or if you have concerns about the accuracy of your meter. In some cases, switching may allow you to move to a credit meter, which could offer more competitive rates and additional payment options.

There are clear benefits to switching energy suppliers when you have a prepayment meter:

  • Better Tariffs: Some suppliers offer cheaper rates for prepayment customers, so comparing deals could save you money each month.

  • Improved Service: If you’ve experienced poor customer support, switching gives you the chance to find a supplier that meets your needs.

  • Debt Management: Ofgem, the UK’s energy regulator, allows you to switch suppliers even if you owe up to £500 on your prepayment meter. This can help you manage debts more effectively. For detailed guidance on the process and your rights, visit Ofgem.

  • Greater Control: Some suppliers offer user-friendly apps and online tools to help you monitor and top up your meter more easily.

Before switching, it’s a good idea to review your energy usage and consider other ways to reduce your bills. Simple changes at home can make a big difference – learn about the simplest ways to save energy for practical tips.

Switching is straightforward, and UK regulations protect your right to choose the best supplier for your needs. Energy suppliers must follow rules set out in the Gas Act 1986 and the Electricity Act 1989, as well as Ofgem’s supply licence conditions. These laws ensure that switching is free and that your supply will not be interrupted during the process.

Understanding your prepayment meter and knowing your legal rights puts you in a strong position to make informed choices about your energy supply. Whether you’re looking to save money, improve service, or better manage your payments, switching suppliers is a practical option worth considering.

How to Write a Letter to Switch Your Energy Supplier with a Prepayment Meter

When you want to switch your energy supplier and you have a prepayment meter, sending a formal letter is an important step. This letter acts as an official notification to your current supplier that you intend to switch. It also ensures there is a clear record of your request, which can be helpful if any issues arise during the process.

Why a Formal Letter Matters

A written letter provides evidence that you have informed your supplier about your intention to switch. This can help protect your rights, particularly if there are delays or disputes. Energy suppliers are regulated by Ofgem and must follow certain procedures when customers want to switch, including those with prepayment meters.

What to Include in Your Letter

To make your request clear and avoid delays, your letter should include the following information:

  • Your name and address: Make sure these match the details your supplier has on file.

  • Account number: This helps your supplier quickly identify your account.

  • Prepayment meter details: Include the meter serial number if possible, which is usually found on the front of the meter.

  • Current supplier and new supplier: Clearly state both your current energy supplier and the company you wish to switch to.

  • Request to switch: Clearly state that you are requesting to switch suppliers.

  • Date: Include the date you are sending the letter.

Sample Letter Template

Below is a simple template you can use and adapt to your situation:


[Your Name]
[Your Address]
[Postcode]
[Date]

Customer Services
[Current Supplier Name]
[Supplier Address]

Subject: Request to Switch Energy Supplier – Prepayment Meter

Dear Sir/Madam,

I am writing to formally notify you that I wish to switch my energy supply from [Current Supplier Name] to [New Supplier Name]. My account number is [Your Account Number], and my property is fitted with a prepayment meter (serial number: [Meter Serial Number]).

Please process my request in accordance with Ofgem’s switching guidelines. If you require any further information to action this request, please let me know as soon as possible.

Thank you for your assistance.

Yours faithfully,
[Your Name]


If you need more examples or want to see other types of letters for energy issues, you can find additional letter templates for gas and electric issues.

Sending Your Letter and Keeping Records

Send your letter by recorded delivery or email (if your supplier accepts it) so you have proof it was sent. Keep a copy of the letter and any proof of posting or delivery. This record can be vital if there are any delays or disputes about your switch.

If you have outstanding debts on your prepayment meter, your current supplier may have specific rules about switching. Generally, you can still switch if your debt is £500 or less for gas or electricity, and the debt is transferred to your new supplier through the Debt Assignment Protocol.

By following these steps and keeping clear records, you can help make your switch to a new energy supplier as smooth as possible.

Can I switch with a prepayment meter if I have debt?

Steps to Take Before and After Sending Your Switch Letter

Steps to Take Before and After Sending Your Switch Letter

Switching energy suppliers when you have a prepayment meter can help you find a better deal, but it’s important to take a few key steps to make the process as smooth as possible. Here’s what you should do before and after sending your switch letter:

1. Check If You Owe Any Money

Before you start the switching process, find out if you have any outstanding debt with your current supplier. Most energy companies will not allow you to switch if you owe more than £500 on either your gas or electricity prepayment meter. If you do owe money, you may still be able to switch under the ‘Debt Assignment Protocol’, which allows your new supplier to take on the debt and you repay them instead.

If you’re unsure how to communicate with your supplier about your debt, you can use a letter for repaying debt to your energy supplier to set up a repayment plan. If you’re struggling to pay your energy bills, there is further advice available on how to manage payments and get help.

2. Understand the Switching Timeline

Once you’ve sent your switch letter to your chosen new supplier, the switching process usually takes around 21 days. This includes a 14-day ‘cooling-off’ period, during which you can change your mind without penalty. Your new supplier will contact your current supplier to arrange the switch, and you should receive confirmation of your switch date.

During this period, continue to top up your prepayment meter as usual. You should not experience any loss of supply during the switch. If you have a smart prepayment meter, check if it needs to be reconfigured for your new supplier.

3. Keep Track of Meter Readings and Top-Up Balances

It’s important to take a final meter reading on the day your switch is due to happen and keep a record of your top-up balance. This helps avoid disputes about how much energy you’ve used or paid for. Take a clear photo of your meter reading and keep receipts for your last few top-ups, just in case you need to provide proof later.

If you have any issues with your prepayment meter, such as it being installed without your agreement due to debt, you can find guidance through the Energy Ombudsman on what steps to take and your rights in these situations.

4. Know Your Rights if the Switch Doesn’t Go Smoothly

You have the right to a fair and timely switch under Ofgem regulations. If your switch is delayed, your new supplier must inform you of the reasons. If you experience problems – such as being incorrectly blocked from switching or continuing to be billed by your old supplier after the switch – raise a complaint with your supplier first.

If the issue is not resolved, you can escalate it to the Energy Ombudsman, who can help resolve disputes between you and your energy company.


By following these steps, you can help ensure a smoother switch to your new energy supplier. Remember to keep all correspondence, meter readings, and receipts, and don’t hesitate to seek help if you run into difficulties with debt or the switching process.

Can my outstanding debt stop me from switching energy suppliers?

Common Issues When Switching with a Prepayment Meter and How to Handle Them

Switching energy suppliers when you have a prepayment meter can be straightforward, but sometimes issues arise that make the process more complicated. Knowing what to look out for – and how to handle problems – can help you protect your rights and make the switch as smooth as possible.

Unauthorised Supplier Transfers

One common issue is having your energy supply switched to a new supplier without your permission, known as an ‘erroneous transfer.’ This can happen if your details are mixed up with someone else’s, or if a supplier acts without your clear consent. If you notice your supplier has changed unexpectedly, contact both your old and new suppliers straight away. You have the right to be returned to your previous supplier without penalty.

If you need to take things further, you can complain about transfer without consent using a template letter. This formal complaint can help you get a prompt resolution and ensure your account is put right.

Mis-selling by Energy Suppliers

Mis-selling happens when a supplier gives you misleading information or pressures you into switching. This could include promising savings that don’t materialise, or failing to explain key terms about tariffs or charges. If you think you’ve been mis-sold an energy contract, you have the right to cancel and seek redress.

To address this, you can complain about energy mis-selling with a clear, formal letter. Be sure to keep records of all communications and any evidence of what you were told.

Back Billing Disputes

Back billing is when a supplier charges you for energy you used in the past but weren’t previously billed for. This can sometimes happen when switching suppliers, especially if there’s a delay in meter readings or account updates. Ofgem rules state that suppliers generally can’t issue back bills for energy used more than 12 months ago if the delay was their fault.

If you receive a back bill you think is unfair, you can complain to a supplier about back billing. Provide details of your meter readings and any previous bills to help resolve the dispute.

Making a Formal Complaint

For any issue – whether it’s a delay in switching, poor customer service, or problems with your prepayment meter – you should first contact your supplier and give them a chance to resolve things. If you’re not happy with their response, it’s important to complain to your energy supplier in writing. This creates a formal record and can help if you need to escalate your complaint further.

Protecting Your Rights During the Switch

  • Check your contract: Make sure you’re not locked into a fixed-term deal with high exit fees.

  • Keep evidence: Save any letters, emails, or notes from phone calls with your supplier.

  • Take meter readings: Record your prepayment meter readings before and after the switch to avoid disputes.

  • Understand your rights: Ofgem regulations protect you from unfair practices, including mis-selling and unauthorised transfers.

  • Don’t ignore problems: If something doesn’t seem right, act quickly. Using a formal complaint letter can speed up the process.

Switching suppliers should help you get the best deal for your energy. By understanding these common issues and knowing how to respond, you can make sure your rights are respected and any problems are dealt with effectively.

Can you help me challenge an unfair back bill from my supplier?

Additional Resources and Related Topics

Switching energy supplier with a prepayment meter can sometimes be just one part of managing your household utilities. To help you with other related situations, we’ve gathered some useful resources and topics you might want to explore further.

If you need to write to your energy company about issues other than switching suppliers – such as billing disputes, complaints, or requesting a refund – you can find more letter templates for gas and electric issues. These templates cover a range of common scenarios and can help you communicate clearly with your supplier.

Managing contracts for essential services often follows similar principles, whether you’re dealing with energy, broadband, or TV. If you’re thinking about changing or ending other service agreements, our guide on cancelling your phone, internet or TV contract explains your rights and the steps you need to take. This can be especially helpful if you’re moving home or reviewing your monthly expenses.

For those living in rented accommodation, understanding who is responsible for paying utility bills and managing the energy supply is crucial. Our resource on utilities and energy supply in UK rentals outlines the legal responsibilities of tenants and landlords, including what happens if you want to switch suppliers or if there’s a dispute over bills.

Finally, switching supplier is a great opportunity to review your energy usage and look for ways to save. Many energy suppliers offer advice on reducing consumption, and making small changes – like using energy-efficient appliances or adjusting your heating – can lower your bills over time. If you’re concerned about energy costs or want to make your home more efficient, these are important steps to consider.

By exploring these related topics, you can take greater control of your household bills and ensure you’re making informed decisions about your essential services.


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