Cheapest energy tariff after moving house (UK)
Moved home and want the cheapest energy tariff? Start with a quick safety check, then compare whole-of-market options for your new postcode and meter. This guide explains what to do first, what affects price, and how to avoid common moving-day switching mistakes.
- What to do on day one (meter reads, supplier details, account set-up)
- How to compare tariffs accurately for your new home (payment type, meter type, region)
- Two realistic examples and a checklist to help you decide
Estimates only. Tariffs, availability and eligibility vary by postcode, meter type and payment method.
Fast answer: cheapest energy tariff after moving house UK
The cheapest energy tariff after moving house UK is the one that gives the lowest estimated annual cost for your new address when you compare by postcode and usage after taking opening meter readings. On day one you’re typically on a supplier “deemed” tariff, so set up your account, confirm your meter type, then compare and switch once your details are correct.
Key takeaways
- Don’t cancel the existing supply when you move in—take readings and let the supplier set you up first.
- Cheapest depends on your home: region, payment method, meter type (smart/prepay/Economy 7), and usage profile.
- Compare using annual cost (standing charge + unit rates) rather than focusing on one headline number.
- Check exit fees and contract length before choosing a fixed deal, especially if you might move again soon.
What to do in the first 60 minutes
- Photograph your gas and electricity meters (including serial numbers).
- Take opening readings (and night/day reads if you have Economy 7 or similar).
- Find the current supplier from the welcome letter/previous occupier, or use the official look-up services (linked below).
- Keep your move-in date, tenancy completion date and readings together—this prevents billing disputes.
Important: If you have a prepayment meter and no credit, you may need an emergency top-up to keep supply on before you switch. Switching can be restricted if the meter is in debt (details in FAQs).
How to get the cheapest tariff after you move
When you move into a UK property you inherit the existing supplier automatically. You’re normally placed on a deemed tariff (often not the cheapest). The best results come from doing a few admin steps first, then comparing using the right inputs for your new home.
Step-by-step (UK-specific)
- Take opening meter readings (gas, electricity; day/night if relevant). Keep photos as proof.
- Identify the supplier for each fuel:
- Electricity: MPAS (Meter Point Administration Service) can help you find the electricity supplier for an address.
- Gas: use the Meter Point Reference Number (MPRN) look-up via the national gas service.
Official guidance and links are in the sources section.
- Contact the current supplier to set up your account and submit readings. This helps avoid being billed for the previous occupier’s usage.
- Check your meter type: smart, standard credit, prepayment, Economy 7/dual-rate. Your cheapest option depends on this.
- Estimate your annual usage if you don’t have bills yet (see scenarios below). Compare tariffs by total annual cost.
- Compare whole-of-market tariffs for your postcode and preferences (fixed vs variable, term length, green options).
- Switch at the right time: you can usually start as soon as you have your account set up and meter details correct.
Two realistic moving-house scenarios (with numbers)
Scenario A: 1–2 bed flat, credit meter
You move into a flat with electric heating and a standard credit meter. You don’t know usage yet, so you estimate 2,000–2,500 kWh/year electricity based on similar homes. You compare variable vs 12‑month fixed deals and choose the option with the lowest estimated annual cost once standing charges are included.
Assumptions: single-rate electricity; no EV; typical occupancy. Limit: electric heating usage varies widely by insulation and how you heat the home.
Scenario B: 3–4 bed house, gas + electric, potential EV
You move into a house with gas central heating and you’re planning an EV in the next 6–12 months. Until you have bills, you estimate gas 10,000–12,000 kWh/year and electricity 3,000–3,500 kWh/year. You compare standard tariffs now, then re-check once the EV is live (because off‑peak options and usage patterns can change what’s “cheapest”).
Assumptions: gas for heating/hot water. Limit: EV tariffs and eligibility can depend on meter type, smart functionality and supplier rules.
Tip: If you can get the previous occupier’s annual kWh usage (not £), that’s the best starting point for accurate comparisons. If not, use a range and pick tariffs that remain competitive across that range.
Compare prices for your new home
Use your postcode and meter details to see live options. We’ll use your information to return tailored results and help you understand what you’re switching to.
What you’ll need (2 minutes)
- Postcode and move-in date
- Meter type (smart / standard / prepay; single-rate or Economy 7)
- Rough annual usage in kWh (or a best estimate)
Tariff types after a house move: what usually works best
There isn’t one universally “cheapest” tariff type. The right choice depends on how long you’ll stay, how predictable your usage is, and whether your meter and payment method match the deal’s eligibility.
| Option | Often suits | Watch-outs after moving | Key checks before you choose |
|---|---|---|---|
| Deemed / default (what you start on) | Short-term only while you set up the account | Can be more expensive than alternatives; you may not know your supplier yet | Get your opening readings accepted; confirm whether you’re on single or dual-rate |
| Fixed tariff (e.g. 12–24 months) | People wanting predictable bills and staying put | Possible exit fees; may be less flexible if you move again | Exit fees, term length, payment method, meter eligibility, what happens if you move again |
| Variable tariff | People wanting flexibility (no long commitment) | Prices can change; not always cheapest over time | How often rates can change; notice periods; compare total annual cost not just unit rate |
| Time-of-use / off-peak (where available) | Homes with flexible usage (some EV drivers, storage heating, shiftable appliances) | Not suitable if most use is at peak times; may require smart meter / specific setup | Meter requirements, off-peak hours, your realistic ability to shift usage, any minimum-term conditions |
Decision checklist (quick)
- This usually suits you if…
- You’ll stay for 12+ months, you can pass a credit check (where required), and you want cost certainty.
- This may not suit you if…
- You expect another move soon, you’re unsure of usage, you have a prepayment meter with debt, or you need maximum flexibility.
What “cheapest” really means
- Total estimated annual cost is the fairest comparison: (standing charge × days) + (unit rate × kWh).
- Standing charges matter if you use little energy (e.g. small flats, second homes).
- Unit rates matter if you use a lot (e.g. larger households, electric heating).
- Eligibility and meter type can remove “cheap looking” tariffs from the list once filtered correctly.
Costs, exclusions and common pitfalls after moving
Most “moving house energy” problems come from admin gaps—missing readings, wrong meter type, or switching before the account is properly set up. Here are the most common UK-specific issues and how to avoid them.
1) Wrong opening meter reads
If the opening read is wrong, you can be billed for energy used by the previous occupier (or you might underpay and face a catch-up bill later). Take photos, keep timestamps, and submit reads as soon as you move in.
2) Economy 7 / dual-rate confusion
Dual-rate meters have separate day and night readings. If you submit only one figure, billing can be delayed or incorrect. Confirm whether your meter is single-rate or dual-rate before comparing tariffs.
3) Prepayment meters and debt
If there’s outstanding debt on the meter, it can affect switching. Debt rules and processes differ. If you’ve inherited a debt you don’t recognise, contact the supplier immediately and keep evidence of your move-in date.
4) Exit fees and move-again risk
Some fixed tariffs may include exit fees. If you might move again soon, a deal that looks cheapest on paper could cost more if you leave early. Always check the tariff’s terms before committing.
5) New supplier can’t find your meter
Sometimes address or meter records need updating (for example in new builds or converted flats). If a switch stalls, you may need to confirm MPAN/MPRN details with the current supplier first.
6) Comparing with the wrong payment method
Direct Debit, pay-on-receipt, and prepayment can price differently. To find what’s truly cheapest for you, compare using the payment method you will actually use at the new address.
Avoid this mistake: switching before you’ve submitted opening readings can make it harder to resolve disputes later. Set up the existing supplier account first, then switch with clean start readings.
FAQs
Can I switch energy supplier as soon as I move in?
Usually yes, but it’s best to first set up your account with the current supplier and submit opening meter readings. That creates a clean billing start point and reduces the chance of disputes or delays during the switch.
What is a deemed tariff when I move house?
A deemed tariff is the default tariff you’re put on automatically when you move into a property supplied by a company you haven’t chosen. It keeps your energy on, but it’s not necessarily the cheapest—so it’s worth comparing once your account details are confirmed.
How do I find out who supplies my new house?
Check any welcome letter, the meter, or ask the landlord/agent. If you still can’t identify them, you can use official supplier look-up routes: MPAS for electricity and the national gas service for gas. Links are in the sources section below.
Will switching affect my credit score?
Some suppliers may carry out credit checks for certain tariffs and payment methods (such as monthly Direct Debit), while others may not. If you’re concerned, compare options that match your circumstances and read the supplier’s terms before applying.
I have a prepayment meter—can I still get the cheapest tariff after moving?
You can still compare, but choices can be more limited, and switching may be restricted if the meter is in debt. If you want to move to monthly billing, you may need a meter change and to meet eligibility checks—ask the supplier what’s possible for your property.
Do I need to tell my old supplier I’m moving out?
Yes. Give your move-out date and final meter readings for your old home, and provide a forwarding address. That helps ensure your final bill is accurate and prevents you being charged for the next occupier’s usage.
Is dual fuel always cheaper after moving house?
Not always. Some deals may offer incentives for taking gas and electricity together, but the overall cheapest outcome depends on the combined annual cost, your usage split, and what’s available for your postcode and meter type at the time you compare.
What readings do I take if I have a smart meter?
Even with a smart meter, take manual opening readings and photos on move-in day. Smart data can sometimes be delayed or not connected yet; your photos provide a clear record if there’s a billing query.
Trust, methodology and sources
How we assess “cheapest” after moving
Because energy prices and availability change frequently, we don’t publish supplier-specific rates on this page. Instead, our guidance focuses on the method that consistently identifies the cheapest option for a household:
- Compare by postcode (regional pricing and network charges can differ).
- Use your meter type and payment method (single/dual-rate, smart, prepay; Direct Debit vs pay on receipt).
- Compare total annual cost using estimated kWh, not just a low unit rate or a low standing charge.
- Include contract terms that affect real-world cost: exit fees, minimum term, and any conditions for specialist tariffs.
Limitations: Without your exact usage and meter details, we can’t say which tariff is cheapest for you. If your new home has unusual features (heat pump, electric-only heating, storage heaters, EV charging, multiple meters), your “cheapest” outcome may differ—compare again once you have a few weeks of real readings.
Sources (UK)
- Ofgem consumer advice (switching, billing and consumer rights)
- Citizens Advice: energy supply and switching
- GOV.UK: change of address services (useful wider moving checklist)
- National Grid: MPRN information (gas supply reference)
Ready to find the cheapest tariff for your new address?
Compare whole-of-market home energy options using your postcode and meter type. It’s the quickest way to see what’s actually available right now—without guessing.
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