Switch gas and electricity supplier (UK guide)
Compare whole-of-market tariffs, check exit fees and payment methods, and switch with minimal hassle. This guide explains how switching works in the UK, what to prepare, and how to avoid common pitfalls.
- Typically no interruption to your supply when you switch (your energy still comes through the same pipes and wires)
- Know what matters most: tariff type, meter type (including prepay), and how you pay
- We’ll show realistic examples with estimated costs and the assumptions behind them
Estimates only. Tariffs, availability and switching timescales vary by supplier, meter type, region and credit checks (where applicable).
Fast answer: how to switch your gas and electricity supplier
Switching supplier in the UK usually means choosing a new tariff, applying (online or by phone), and letting the new supplier manage the switch. Your gas and electricity keep flowing through the same network — you’re changing who bills you and what you pay. Most switches complete without you needing an engineer visit, and you’ll normally just provide meter readings (unless you have smart meters that can be read remotely).
What to have ready
- Postcode and address
- How you pay (monthly Direct Debit, on receipt of bill, prepayment)
- Meter type (standard / Economy 7 / smart / prepay)
- Estimated usage (kWh) or typical spend
What to check before you switch
- Exit fees and end date of your current tariff
- Standing charge vs unit rate (they both matter)
- Fixed vs variable, and any price guarantee terms
- Smart meter compatibility and prepay options
Typical outcomes
- No planned disruption to supply
- New supplier notifies the old supplier
- Final bill from old supplier (with opening/closing readings)
- Direct Debit may be rebalanced after a few months
Key takeaway: The cheapest quote isn’t always the best choice. If your meter type or payment method doesn’t match the tariff (for example, Economy 7 or prepay), the “headline” price may not apply.
How switching works (step-by-step)
In most UK cases, switching is administrative: the supplier changes, not the physical energy supply. Here’s what normally happens from quote to completion.
- Compare tariffs for your home using your postcode, usage (kWh) and how you pay.
- Apply with the new supplier (you’ll choose start date and provide details for billing and Direct Debit, if applicable).
- Cooling-off period usually applies for domestic energy sales made at a distance (online/phone). Terms can vary; check your welcome pack.
- Switch date agreed and confirmed by the new supplier. You do not need to contact your old supplier to cancel in most cases.
- Provide opening meter readings (unless smart readings are used). These are used to create accurate final/first bills.
- Final bill from your old supplier and your account is closed (credit balances should be returned; keep an eye on timelines).
If you rent (tenant)
You can usually switch if you pay the bills and your tenancy agreement doesn’t include energy in rent. If your landlord manages the account, you may not be able to change supplier.
If you have a prepayment meter
You can still switch, but tariff choice can be narrower. Some switches require the new supplier to support your meter type and repayment settings (if you owe debt on the meter).
If you have Economy 7 / multi-rate
Make sure you compare against a tariff that matches your rates (day/night). If you move to a single-rate tariff, your night usage could become more expensive.
Practical tip: Take a photo of your meter on switch day. It’s helpful if there’s ever a dispute about readings.
Compare and switch with EnergyPlus
Tell us a few details and we’ll match you to available UK domestic tariffs. We’ll show the key differences that can change your bill (standing charge, unit rates, contract length, payment method and meter type).
What we’ll use
- Postcode (to identify region/network charges)
- Contact details (to send your quote)
- Optional notes (e.g., prepay, Economy 7)
What you’ll see
- Estimated monthly and annual cost
- Tariff type (fixed/variable) and term length
- Any exit fees (where applicable)
Privacy: Only share what you’re comfortable with. A quote is based on the details you provide and may change if your usage, meter setup, or eligibility differs.
Get your quote
Compare your switching options (what to prioritise)
Different tariffs can suit different households. This table highlights the trade-offs that matter most in the UK market: price stability, flexibility, and how you pay.
| Option | Best for | Watch-outs | What to check |
|---|---|---|---|
| Fixed tariff | People who want predictable unit rates for a set term | May have exit fees; a fix isn’t always cheaper overall | Exit fees, term length, payment method, standing charge |
| Variable tariff | Flexibility (often no exit fee) and easier switching again later | Rates can change (subject to terms and regulatory rules) | How/when rates can change; notice period |
| Dual fuel (gas + electricity) | Single bill and simpler account management | Not always the cheapest versus splitting suppliers | Total annual cost across both fuels (not just one) |
| Single fuel (gas or electricity only) | Homes with no gas, or those optimising each fuel separately | Two accounts; timings/reads can be less convenient | Billing dates, meter types, any bundled discounts |
Decision checklist: who switching usually suits
- You’re out of contract or on a standard/variable deal and want to compare
- You can provide accurate usage (or you have past bills / smart readings)
- You want to change payment method (e.g., move to monthly Direct Debit)
- You’ve moved home and want a tariff that matches your household pattern
Who should pause and double-check first
- You’re on a fixed deal with exit fees and only a few months left
- You have a prepayment meter with debt recovery set on the meter
- You have Economy 7 / multi-rate and aren’t sure of your day/night split
- You’re in the middle of a billing dispute (resolve readings and balances first)
Good to know: Your region can affect the standing charge and unit rates because network costs vary across Great Britain. That’s why postcode-based comparisons are important.
Two realistic switching scenarios (with assumptions)
Scenario A: dual fuel, monthly Direct Debit, medium usage
Household: 2–3 bed home in England, paying by monthly Direct Debit. Usage assumption: 3,100 kWh electricity/year and 12,000 kWh gas/year (typical medium). Meter: single-rate electricity.
| Item | Current (example) | New (example) |
|---|---|---|
| Estimated annual electricity | £1,020 | £930 |
| Estimated annual gas | £960 | £900 |
| Exit fees | £0 | £0–£x (varies) |
| Estimated total/year | £1,980 | £1,830 |
These are illustrative estimates to show how comparisons work. Actual prices vary by region, tariff and standing charges, and any discounts or credits.
Scenario B: prepayment electricity, low usage flat
Household: 1 bed flat, electricity only (no gas), prepayment. Usage assumption: 1,800 kWh/year. Meter: prepay, single-rate.
| Item | Current (example) | New (example) |
|---|---|---|
| Estimated annual electricity | £720 | £690 |
| Top-up fees / payment method | Varies | Varies |
| Debt on meter | £0 (assumed) | Must be supported if present |
| Estimated total/year | £720 | £690 |
Prepayment availability and pricing can differ from Direct Debit tariffs. If you have debt on the meter, switching may require extra steps.
Costs, exclusions and common switching pitfalls
Most switching problems come from mismatched details (meter type, payment method, address), timing (exit fees), or billing/readings. Use the cards below as a quick pre-switch check.
Exit fees and contract end dates
Some fixed tariffs charge an exit fee if you leave early. Weigh this against any estimated savings and how long is left on your current tariff.
Standing charge surprises
Low users can be hit hardest by higher standing charges. Compare the total estimated annual cost, not only the unit rate.
Economy 7 / multi-rate mismatch
If you have two readings (day/night), make sure the new tariff supports multi-rate billing. Otherwise your off-peak usage could be charged at a higher single rate.
Smart meter setup
A smart meter can operate in “dumb” mode if compatibility changes. You can still switch, but smart features (like automatic reads) may vary by supplier.
Direct Debit changes
Your monthly payment can be adjusted after a review (often after a few readings). Build in a buffer if you’re moving from estimated to actual usage.
Address and occupancy details
New builds, flat numbers, and recently renamed streets can cause delays. Use the exact address format shown on a recent bill where possible.
If you’re in debt to your current supplier: you may still be able to switch, but there can be limits depending on debt level, meter type and repayment arrangements. If you’re unsure, check with your supplier or Citizens Advice before starting a switch.
FAQs: switching gas and electricity in the UK
- Will my gas or electricity go off when I switch?
- Normally, no. Your energy supply continues through the same network. You’re changing the company that bills you and the tariff you’re on.
- How long does switching take in the UK?
- Timescales can vary by supplier and circumstances (meter type, address matching, objections). Your new supplier should confirm an expected switch date and keep you updated.
- Can I switch if I’m renting?
- Usually yes, if you’re responsible for paying the energy bills. If energy is included in your rent or the landlord controls the account, you may not be able to change supplier. Check your tenancy agreement.
- Can I switch with a prepayment meter?
- Often yes, but choice may be more limited. If you have debt on the meter, you may need a supplier that supports your repayment settings. It’s worth comparing prepay-specific tariffs rather than Direct Debit-only deals.
- Do I need to give meter readings when I switch?
- Usually, yes. Accurate opening/closing readings help prevent billing issues. If you have a smart meter, readings may be collected automatically — but it’s still sensible to take a photo around the switch date.
- Should I switch gas and electricity together (dual fuel)?
- Dual fuel can be simpler (one account and usually one Direct Debit). But it’s not automatically cheaper. Compare the combined annual estimate against splitting fuels, especially if one fuel is much higher usage.
- What happens to credit on my old supplier account?
- Your old supplier should issue a final bill and return any credit balance based on their process and timelines. Keep copies of bills and readings and follow up if you don’t receive the refund in a reasonable period.
- What if my switch is delayed or goes wrong?
- Contact the new supplier first (they manage the switch). Have your address details and meter readings ready. If you can’t resolve it, Citizens Advice explains escalation routes and your rights.
Trust, methodology and sources
Editorial accountability
- Written by: EnergyPlus Editorial Team
- Reviewed by: Energy Specialist
- Last updated: March 2026
How we assess switching advice (and our limitations)
This page is designed to help UK households understand the switching process and compare options sensibly. We focus on factors that commonly change the real cost and experience of switching.
- Assumptions in examples: usage in kWh based on typical low/medium household patterns; standard domestic meters; illustrative costs to demonstrate comparison logic.
- What can change results: your region, meter type (smart/prepay/Economy 7), actual consumption, tariff eligibility, supplier availability, and how/when prices are updated.
- What we don’t do here: we don’t promise savings, and we don’t assume a switch will be faster or cheaper for every home.
Sources (UK)
- Ofgem (UK energy regulator) — consumer guidance and market rules
- Citizens Advice: Energy — help with switching, billing disputes and complaints
- GOV.UK: Energy grants calculator — check support you may be eligible for
Transparency note: Tariff names, prices and availability change. Always read the supplier’s tariff information and terms (including exit fees and payment method requirements) before you switch.
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EnergyPlus provides comparisons for UK domestic energy. Switching eligibility and rates depend on supplier checks, meter type and address details.
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