Cheapest energy tariff when moving house (UK guide)
Moving home is the best time to reset your energy costs — but the cheapest tariff depends on your meter, payment method and how soon you can switch. Use this guide to avoid expensive defaults and choose a tariff that fits your new address.
- What to do on moving day (so you don’t overpay)
- How to switch quickly (even if you don’t know the current supplier yet)
- Realistic examples with estimated costs and common pitfalls
Estimates vary by region, meter type and payment method. Always check exit fees and eligibility before agreeing a tariff.
Fast answer: what’s the cheapest energy tariff when you move?
For most people moving into a new UK home, the cheapest route is usually:
1) Start on the existing supplier
On moving day, you typically inherit the current supplier and go onto their deemed tariff (often a variable rate). Take meter readings, then switch.
2) Switch as soon as you can
Compare whole-of-market tariffs for your postcode, meter type and payment method. Switching typically completes in around 5 working days for many suppliers (can be longer in some cases).
3) “Cheapest” is the lowest estimated annual cost
The cheapest tariff is usually the one with the lowest estimated annual cost for your usage — not just the lowest unit rate. Standing charges and regional pricing matter.
Important: You normally can’t “take” your old tariff to a new property unless your supplier offers a specific home move process (and even then, it may not be available at the new address or meter type). Assume you’ll need to choose a new tariff.
Takes a few minutes. No obligation.
Get the cheapest tariff for your move (quote form)
Tell us your new property’s postcode and a couple of details. We’ll show suitable tariffs across the market, including options for direct debit, prepay and smart meters where available.
Tip for movers: If you don’t know the current supplier yet, you can still compare based on your new postcode and typical usage. You’ll confirm final details once you have your opening meter readings.
How to get the cheapest energy tariff when moving (step-by-step)
- Before you move (if you can): find out your new home’s meter type (credit, prepay, smart) and whether it’s economy/dual-rate (e.g., Economy 7).
- On moving day: take clear photos of gas and electricity meter readings (and the serial numbers). Keep them with your tenancy/completion documents.
- Tell the current supplier you’ve moved in: you’ll usually be placed on their deemed tariff until you choose a new one.
- Compare tariffs for your new postcode: look at estimated annual cost, tariff length, exit fees, and whether prices are fixed or variable.
- Choose a tariff that matches your timeline: if you might move again soon (or expect changes), avoid high exit fees.
- Keep an eye on the first bill: check the opening reads and tariff start date. Dispute errors early to avoid long back-and-forth.
Request your moving-home tariff options
Tariff types compared (what’s cheapest for movers?)
“Cheapest” depends on your risk tolerance and how long you’ll stay. This table explains the common options you’ll see when comparing tariffs after a move.
| Tariff type | Usually suits | Watch-outs | Mover tip |
|---|---|---|---|
| Deemed / standard variable | Short stop-gap while you organise your switch | Often not the cheapest long-term; prices can change (within rules) | Use it briefly, then compare and switch |
| Fixed rate (6–24 months) | People who want predictable bills | Exit fees may apply; may require direct debit | If you might move again soon, choose low/no exit fee |
| Tracker / variable deals | Those comfortable with price changes | Prices can rise; not always available for every meter/payment type | Check change rules and how often rates update |
| Prepayment (PAYG) | Homes with PAYG meters; budgeting week-to-week | Top-up access; debt can be attached to meter (report issues) | If you want credit meter, ask about eligibility and timescales |
| Economy 7 / multi-rate | Homes with storage heaters; high overnight usage | Day rate can be higher; wrong tariff can cost more | Only pick if your usage fits (roughly: meaningful night consumption) |
Cheapest-for-you checklist
- Confirm meter type: smart / credit / prepay, and whether it’s single-rate or Economy 7.
- Choose payment method: direct debit is often cheaper than cash/cheque, but not always.
- Check tariff length: match it to how long you expect to stay.
- Compare total cost: unit rates and standing charges for your region.
- Look for fees: exit fees, late payment charges, and eligibility limits.
Who this approach suits (and who it doesn’t)
- Best if you:
- want to minimise costs quickly, can provide meter readings, and are happy to switch soon after moving in.
- Not ideal if you:
- need a complex meter change urgently (e.g., prepay-to-credit) or have uncertainties around tenancy/occupancy — you may need supplier advice first.
Extra costs, exclusions and common moving-house pitfalls
Most moving-house energy bill problems come down to opening readings, meter type mismatches, or tariffs that don’t match how the home is heated. Here’s what to watch for.
1) Opening reads (most important)
If you don’t provide accurate move-in readings, you can be billed for the previous occupier’s usage. Take photos and submit readings promptly.
2) Exit fees and moving again
Some fixed tariffs charge an exit fee if you leave mid-term. If your housing situation may change, prioritise low/no exit fees even if the unit rate is slightly higher.
3) Prepay meters and debt
If there’s debt on a prepay meter, it should relate to the occupier responsible. If you suspect incorrect debt, contact the supplier immediately and keep records.
4) Economy 7 / storage heaters
If the property has storage heaters, the cheapest tariff may be a multi-rate plan — but only if you use enough electricity overnight. Otherwise, a single-rate tariff can be cheaper.
5) Smart meters don’t guarantee smart tariffs
A smart meter can help with accurate billing, but tariff availability still depends on supplier, region, meter configuration and account checks.
6) Standing charges vary by region
Two tariffs with the same unit rate can cost different amounts because standing charges and unit rates are region-dependent. Always compare using your new postcode.
Don’t cancel supply when moving in. Your energy won’t be cut off just because you haven’t chosen a new tariff yet. You inherit supply, then switch once your account is correctly set up with the current supplier.
Two realistic moving scenarios (with estimated numbers)
These examples are illustrative. Real prices vary by supplier, region, meter type and payment method. We use simplified rates to show how the decision works.
Scenario A: Couple moving to a 2-bed flat (dual fuel, direct debit)
- Assumed annual usage: 2,700 kWh electricity + 10,000 kWh gas
- Deemed variable (illustrative): elec 26p/kWh + 60p/day; gas 6.5p/kWh + 32p/day
- Competitive fixed (illustrative): elec 24p/kWh + 55p/day; gas 6.0p/kWh + 29p/day
Estimated annual cost comparison:
- Deemed variable: ~£1,492/year
- Competitive fixed: ~£1,363/year
- Illustrative difference: ~£129/year (about £10.75/month)
If switching completes in ~5 working days, most of the year benefits from the cheaper tariff — but the exact timing depends on account setup and supplier processes.
Scenario B: Tenant moving into an Economy 7 all-electric home
- Assumed annual usage: 4,200 kWh electricity (no gas)
- Option 1 (single-rate): 25p/kWh + 60p/day
- Option 2 (E7): day 29p/kWh + night 13p/kWh + 60p/day
- Assume night usage share: 40% overnight (storage heaters, immersion)
Estimated annual cost comparison:
- Single-rate: ~£1,416/year
- Economy 7 (40% night): ~£1,282/year
- Illustrative difference: ~£134/year
If night usage were only 15–20%, Economy 7 could be worse value. Match tariff to how the home is heated and when you use power.
FAQs: cheapest energy tariff when moving house (UK)
Can I switch energy supplier before I move in?
Usually, you’ll need to be responsible for the supply at the new address first (i.e., you’ve moved in and the account is in your name). You can still compare tariffs in advance so you’re ready to apply as soon as you have your move-in details.
How do I find out who supplies my new home?
If the seller/landlord/agent can’t tell you, you can use the relevant UK networks to identify the registered supplier. For electricity, you can start with your local Distribution Network Operator (DNO). For gas, the Meter Point Reference Number (MPRN) lookup route is commonly used. If you’re unsure, contact us via the quote form and we’ll point you to the right next step.
Will my energy be cut off if I don’t pick a tariff straight away?
No — supply continues when you move in. You’ll typically be placed on the existing supplier’s deemed tariff until you agree a tariff or switch away. The key is to provide move-in readings and your details promptly.
What if I move into a home with a prepayment meter?
You can stay on prepay and compare prepay tariffs, or ask about switching to a credit meter (eligibility depends on supplier checks and the meter setup). Take a photo of the meter screens/cards/keys and contact the current supplier immediately to make sure you’re set up correctly.
How fast can I switch after moving?
Many supplier switches can complete in around 5 working days once your account is set up and details match, but it can take longer if there are meter issues, address mismatches, or if the current supplier hasn’t fully created your account yet.
Is direct debit always the cheapest way to pay?
Direct debit is often priced lower than pay-on-receipt-of-bill, but not always. When comparing, pick the payment method you’ll actually use — otherwise the “cheapest” quote may not reflect the tariff you can take.
Do I need my meter serial number or MPAN/MPRN to switch?
Not always to start a comparison, but it helps to avoid delays. Your supplier can confirm your MPAN (electricity) and MPRN (gas). Taking photos of the meter and serial number on move-in day is a simple way to keep everything accurate.
Can I choose a tariff if I’m renting and bills are in the landlord’s name?
If you’re responsible for paying the energy bills, the account should usually be in your name (or joint tenants). If bills are included in rent, you typically can’t switch because you’re not the bill payer. Check your tenancy agreement and clarify responsibility before you apply.
Trust, methodology and sources
Page ownership
- Written by:
- EnergyPlus Editorial Team
- Reviewed by:
- Energy Specialist
- Last updated:
- May 2026
How we assess “cheapest” for movers
When we talk about the cheapest tariff for moving house, we focus on what a typical household can do in the real world (with real constraints). Our recommendations prioritise:
- Estimated annual cost (unit rates + standing charges) based on the user’s postcode/region and usage assumptions.
- Eligibility fit (meter type, payment method, whether a tariff is available for prepay/Economy 7/smart meters).
- Flexibility (exit fees, tariff length, and suitability for people who might move again).
- Practical switching steps (move-in readings, account setup, and realistic timescales).
Limitations: The scenarios on this page use simplified, illustrative rates to show decision-making. Live quotes can differ due to market changes, regional price differences, meter configuration, credit checks, and supplier-specific rules.
Sources (UK)
- Ofgem (UK energy regulator) — switching rules, consumer protections and market guidance.
- Citizens Advice: energy — practical advice on bills, meter readings, and moving home.
- GOV.UK — guidance on moving home administration and household responsibilities.
Ready to lock in a better tariff for your new home?
Compare whole-of-market options by postcode, meter type and payment method — then choose what fits your move.
Reminder: Keep your move-in meter readings and photos. They’re your best protection against incorrect opening bills.
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