Switching energy providers: a UK step-by-step guide
Learn how switching works in Great Britain, what to check before you move, and how to compare tariffs safely—without losing important protections.
- Understand timelines, cooling-off and what happens on switch day
- See what to do if you’re in debt, on prepayment, or have a smart meter
- Compare like-for-like using your usage (kWh), not just headline prices
Estimates depend on your region, meter type and payment method. Prices and availability can change. EnergyPlus is whole-of-market for domestic energy.
Fast answer: can you switch energy providers in the UK?
In most cases, yes. If you’re responsible for paying the energy bill (owner-occupier or tenant on a direct contract), you can usually switch supplier and keep the same gas and electricity supply. The switch is administrative: your energy still comes through the same pipes and wires.
Key takeaways
- Switching shouldn’t interrupt your supply (you keep the same network).
- Prices vary by region, meter and payment method, so compare using your usage (kWh).
- Fixed deals can have exit fees—check your tariff end date and terms before you start.
- Debt and prepayment don’t always block switching, but there are rules and limits.
When you might not be able to switch
- You’re not named on the energy account (e.g., bills included in rent or landlord-managed supply).
- Your home is on an embedded network (some flats/heat networks).
- There’s an unresolved change of tenancy issue or disputed account ownership.
Note: This guide is for Great Britain (England, Scotland, Wales). Energy in Northern Ireland works differently.
How switching energy supplier works (step by step)
Switching is mostly paperwork. Your new supplier handles the move and contacts your old supplier. You’ll normally be asked for your address and postcode, and sometimes your meter details. You may also be asked for an opening meter reading on (or around) the switch date.
- Check your current tariff: payment method, fixed end date, and whether exit fees apply.
- Compare like-for-like: use your annual usage in kWh if possible (gas and electricity separately).
- Apply: choose a tariff and submit your details. Keep a copy of the quote and tariff information.
- Cooling-off: you typically have a cooling-off period after agreeing to switch (terms vary by supplier and channel).
- Switch date and readings: submit meter readings when requested so bills align correctly.
- Final bill and refund: your old supplier sends a final bill and refunds any credit balance (timings vary).
Tip: If you don’t know your usage, check a recent bill or online account for annual consumption (kWh). Comparing on monthly cost alone can mislead if direct debit levels change.
What you’ll need before you start
- Postcode and address
- Used to identify your supply points and regional rates.
- Meter type
- Credit, smart meter, or prepayment. Some deals are meter-specific.
- Payment preference
- Direct debit, pay on receipt of bill, or prepayment. Prices can differ.
- Your usage (ideal)
- Annual electricity (kWh) and gas (kWh). If you can’t find it, we’ll estimate based on typical consumption and adjust when you provide bills.
Compare tariffs the safe way (and why details matter)
A good comparison isn’t just about the cheapest headline unit rate. The tariff that suits you depends on your region, meter type, payment method, and how much energy you actually use (kWh). A small change in standing charge can outweigh a cheaper unit rate for low-usage homes.
Before you switch, check these 6 items
- Tariff end date and whether you’ll pay an exit fee for leaving early.
- Standing charge and unit rate for both electricity and gas (if dual fuel).
- Direct debit vs pay on receipt: prices may differ, and direct debit can be adjusted seasonally.
- Smart meter compatibility (especially if you have a smart prepay or specific in-home display reliance).
- Customer service and billing: e.g., online-only accounts, paper billing charges, call centre hours.
- Warm Home Discount / priority services: if you rely on support schemes, confirm how the new supplier administers them.
Important: If you’re moving home, it’s usually best to take a meter reading on move-in day, contact the current supplier to set up the account, then switch once your opening bill is correct. That reduces the risk of billing disputes.
Get a quote (whole-of-market)
Share a few details and we’ll match you with available tariffs for your home. We’ll use your information to provide an estimated quote—then you can decide whether to proceed.
Choosing the right switch: quick comparison table
Use this to decide what type of tariff and switch approach fits your situation. Always confirm the tariff information provided by the supplier before you agree.
| Option | Best for | Watch-outs | What to check before switching |
|---|---|---|---|
| Fixed tariff (e.g., 12 months) | People who want predictable pricing for a set period | May include exit fees; may not benefit if prices fall | Exit fees, end date, how your direct debit is set |
| Variable tariff | Flexibility; people who may move home soon | Rates can change; budgeting can be harder | How often rates can change; notice periods |
| Dual fuel (gas + electricity) | Convenience of one supplier and one account | Not always cheaper than separate suppliers | Total annual cost for both fuels; billing setup |
| Electricity-only (no gas) | Flats, heat pumps, storage heaters, all-electric homes | Standing charge matters more for low usage | Meter type; any time-of-use requirements |
| Prepayment (PPM) | People who prefer pay-as-you-go or need tighter control | Fewer tariffs; switching can be limited if in debt | Any PPM debt, meter type (smart/key), top-up method |
Decision checklist: switching suits you if…
- You can provide accurate usage (or at least a recent bill) to compare properly.
- You’re happy with online billing and direct debit (if required for the best rates).
- Your current deal is ending, or you’ve checked any exit fees.
- You want to align your tariff with your home (e.g., smart meter / prepay / all-electric).
It may not suit you (yet) if…
- You’re mid-way through a fixed tariff with a high exit fee and only a short time left.
- You’ve just moved and haven’t received your opening bill (risk of disputed reads).
- Your building uses an embedded network/heat network where you can’t choose a supplier.
- You’re struggling with bills—consider support options first (see sources below).
Two realistic UK scenarios (with numbers)
Scenario A: dual fuel household on direct debit
Assumptions (example only): Great Britain, credit meters, paying by monthly direct debit. Annual usage: 3,100 kWh electricity and 12,000 kWh gas. Current tariff: elec 28.0p/kWh + 55p/day standing; gas 7.2p/kWh + 33p/day standing. New tariff quote: elec 26.0p/kWh + 52p/day; gas 6.8p/kWh + 32p/day.
| Component | Current (est.) | New (est.) |
|---|---|---|
| Electricity unit cost | 3,100 × £0.280 = £868 | 3,100 × £0.260 = £806 |
| Electricity standing | 365 × £0.55 = £201 | 365 × £0.52 = £190 |
| Gas unit cost | 12,000 × £0.072 = £864 | 12,000 × £0.068 = £816 |
| Gas standing | 365 × £0.33 = £120 | 365 × £0.32 = £117 |
| Total annual (est.) | £2,053 | £1,929 |
Estimated difference: £124/year in this example, before any exit fees or one-off credits. Your results will vary by region and tariff structure.
Scenario B: low-usage electricity-only flat
Assumptions (example only): Electricity-only, credit meter, paying by monthly direct debit. Annual usage: 1,800 kWh. Tariff 1: 24.5p/kWh + 62p/day standing. Tariff 2: 26.0p/kWh + 50p/day standing.
| Component | Tariff 1 (est.) | Tariff 2 (est.) |
|---|---|---|
| Unit cost | 1,800 × £0.245 = £441 | 1,800 × £0.260 = £468 |
| Standing charge | 365 × £0.62 = £226 | 365 × £0.50 = £183 |
| Total annual (est.) | £667 | £651 |
Even with a higher unit rate, Tariff 2 is ~£16/year cheaper here because the standing charge is lower. This is why comparing your own usage matters.
These examples are illustrative and exclude potential one-off incentives, deferred discounts, or bill credits. Always check the tariff information and how long any promotional pricing lasts.
Costs, exclusions and common pitfalls (UK-specific)
Most switches are straightforward, but these are the issues that most often cause unexpected costs, delays or billing problems.
Exit fees (leaving early)
Fixed tariffs may charge an exit fee if you switch before the end date. Some suppliers waive fees near the end of a contract—others don’t. Check your current tariff terms and your online account.
Debt and prepayment rules
If you owe money, you may still be able to switch, but there can be restrictions depending on the amount, meter type and supplier policies. If you’re on prepayment, switching options can be narrower.
Meter type mismatches
Time-of-use tariffs (for example, tariffs with cheaper off-peak rates) usually require compatible metering and setup. If your meter isn’t suitable, you may be offered a different tariff or a meter exchange.
Common switching pitfalls (and how to avoid them)
- Wrong move-in date or readings: take dated photos of meters when you move in/out.
- Comparing by monthly direct debit: use annual kWh + tariff rates instead.
- Forgetting electricity-only tariffs: if you have no gas supply, don’t compare dual-fuel totals.
- Overlooking standing charge: especially important for low usage or second homes.
- Assuming all “green” tariffs are the same: read how the supplier matches renewable electricity (terms vary).
If you’re struggling to pay
Switching can help, but it’s not the only option. You may also be eligible for grants, payment plans, or priority support.
- Contact your supplier and ask for help with your payments.
- Check benefits and support schemes via Citizens Advice and GOV.UK.
- Ask about the Priority Services Register if you’re eligible.
We include trusted support links in the Sources section below.
Northern Ireland uses a different energy market structure. If your postcode is in Northern Ireland, tariff availability and switching processes will differ.
Switching energy providers FAQs
Will my gas or electricity go off when I switch?
Normally, no. Switching changes the company that bills you, not the physical network delivering energy. Any interruption is very uncommon and would typically be due to an unrelated fault.
How long does switching take in Great Britain?
Timelines vary by supplier, meter type and account status. Your new supplier should confirm your expected switch date and what they need from you (such as meter readings).
Can I switch if I rent my home?
Usually yes if you’re the bill payer and have a direct contract with the supplier. If bills are included in your rent or the landlord controls the supply, you may not be able to switch.
Can I switch if I have a smart meter?
Often yes. In some cases, smart features (like automatic readings) may change depending on the supplier and meter configuration. Always check whether the new supplier supports your smart meter setup, especially for smart prepayment.
Can I switch if I’m on prepayment (key/card or smart top-up)?
You may be able to, but options can be more limited. If you have outstanding debt on the meter, switching may be restricted or handled through a debt assignment process (eligibility varies).
What’s the difference between unit rate and standing charge?
The unit rate is what you pay per kWh you use. The standing charge is a daily fixed amount that covers things like network costs and maintaining your connection. Both affect your total bill.
Do I need to give meter readings when I switch?
Often yes (even with a smart meter). Providing timely readings helps ensure your final bill from the old supplier and your opening bill from the new supplier are accurate.
Should I switch when I’m in credit?
You can switch if you’re in credit. Your old supplier should return any credit balance after the final bill is produced. Keep records of readings and bills, and follow up if a refund is delayed.
Trust, methodology and sources
Page governance
- Written by
- EnergyPlus Editorial Team
- Reviewed by
- Energy Specialist
- Last updated
- April 2026
How we assess switching advice (and limitations)
Our guidance focuses on what changes your bill in practice and what commonly causes switching problems. We prioritise:
- Total annual cost using unit rates + standing charges (not just the displayed monthly direct debit).
- Eligibility constraints (meter type, payment method, debt status, tenancy/account ownership).
- User outcomes (billing accuracy, switch timing, avoiding disputes, support access).
The example scenarios on this page are illustrative calculations using stated assumptions. They are not a quote and may not reflect tariffs available in your region today. Supplier terms, Ofgem rules and market pricing can change.
If you’re unsure about your rights, switching eligibility, or debt situation, get independent help before you agree to a new contract.
Sources (UK)
- Ofgem (UK energy regulator) — rules, consumer standards and market information
- Citizens Advice: energy — independent help with bills, switching and complaints
- GOV.UK benefits and financial support — official guidance on eligibility and claims
- GOV.UK: find an EPC — check your property’s Energy Performance Certificate
Ready to compare energy tariffs for your home?
Get an estimated quote based on your postcode and preferences. We’ll surface key terms (standing charges, unit rates and exit fees) so you can switch with confidence.
Back to Energy Suppliers