Switch to a cheaper heat pump tariff in the UK
Compare whole-of-market electricity options for heat pump households, understand eligibility (meter, region, payment), and switch with confidence.
- See when a heat pump tariff can reduce running costs (and when it won’t)
- Check if your meter setup can use off-peak rates (smart meter, tariff windows)
- Get a personalised quote in minutes — no guesswork, UK-specific assumptions
Estimates only. Prices, eligibility and off-peak windows vary by supplier, region, meter type and payment method. Always check tariff terms before switching.
Fast answer: can you get a cheaper heat pump tariff in the UK right now?
Often, yes — but it depends less on whether you have a heat pump and more on how and when you use electricity (especially overnight), plus your meter type and tariff rules.
Most likely to benefit
- Smart meter installed (or compatible) and you can shift some use off-peak
- Heat pump hot water schedule can run overnight / midday (by control settings)
- Higher electricity use overall (more to gain from a lower effective rate)
May benefit (check carefully)
- Time-of-use tariffs with higher day rates but cheap off-peak hours
- Heat pump mostly runs in daytime (home all day) but you can still schedule hot water
- Electric vehicle charging too (can stack savings into the same off-peak window)
Often not worth it
- No smart meter and supplier requires one for time-of-use pricing
- Most usage is peak-time and can’t be moved (e.g., electric cooking/heating during evenings)
- High exit fees or you’re on a protected fixed deal with strong rates
Important: “Heat pump tariffs” are usually just electricity tariffs with rules that suit heat pumps (e.g., off-peak pricing). Suppliers may label them for heat pumps, but the best option could be a standard tariff, a time-of-use tariff, or a tracker — depending on your usage pattern and risk tolerance.
Compare heat pump-friendly tariffs (and avoid false savings)
The cheapest tariff for a heat pump home is the one that gives you the lowest effective p/kWh for your actual timing of use — after standing charges and any peak rates are factored in.
What you’ll need to compare properly
1) Your meter and tariff access
- Smart meter (often required for time-of-use)
- Single-rate vs multi-rate setup
- Any legacy restrictions (e.g., old Economy 7/10 wiring)
2) Your usage split
- Total annual electricity (kWh)
- Estimated off-peak share (e.g., 20% vs 50%)
- Whether hot water can be shifted to cheaper windows
Two realistic scenarios (with numbers)
These examples are illustrative (not quotes). We show the logic so you can sanity-check any deal.
Scenario A: can shift a lot off-peak
- Home
- 3-bed, air source heat pump, smart meter, flexible hot water schedule
- Annual electricity
- 10,000 kWh (heat pump household)
- Off-peak share
- 40% off-peak / 60% peak
- Tariff comparison (energy only)
- Single-rate: 25p/kWh → 10,000 × £0.25 = £2,500
- Time-of-use: 14p off-peak, 30p peak → (4,000 × £0.14) + (6,000 × £0.30) = £2,360
Estimated difference: ~£140/year on unit rates alone. Standing charges, regional rates and any add-ons can change the result.
Scenario B: most use is peak-time
- Home
- 2-bed flat, heat pump, household home evenings/weekends
- Annual electricity
- 6,500 kWh
- Off-peak share
- 15% off-peak / 85% peak
- Tariff comparison (energy only)
- Single-rate: 25p/kWh → 6,500 × £0.25 = £1,625
- Time-of-use: 14p off-peak, 30p peak → (975 × £0.14) + (5,525 × £0.30) = £1,794
Estimated outcome: time-of-use could cost more if you can’t move demand. This is why “cheap off-peak” isn’t automatically “cheaper overall”.
Practical switching steps (UK)
- Check your current tariff details: unit rates, standing charge, end date, exit fees, payment method.
- Confirm your meter type: smart meter (SMETS1/SMETS2), Economy 7/10, single-rate.
- Estimate your off-peak potential: can you run hot water at night? Do you have a cylinder? Any EV charging?
- Compare like-for-like: include standing charges and the peak rate you’ll pay most of the time.
- Switch: most switches complete in around 5 working days under the UK switching process, but timing can vary (meter issues, data mismatches).
If you’re on a fixed deal, check whether an exit fee applies. Some suppliers waive it near the end of the term; terms vary.
Get a heat pump tariff quote
Tell us a few details and we’ll compare available UK tariffs for your home. We’ll use your postcode to apply regional pricing and network charges.
Quick eligibility checks
- Smart meter: many off-peak tariffs require one (or require it for full functionality).
- Payment method: direct debit often unlocks the widest set of prices.
- Region: unit rates and standing charges vary by distribution area.
- Meter configuration: multi-rate meters can complicate switching if legacy wiring exists.
Heat pump tariff types compared (UK)
Use this table to narrow down the tariff style that fits your heat pump household. Exact rates and rules vary by supplier and region.
| Tariff type | How it can help a heat pump | Typical requirements | Watch-outs |
|---|---|---|---|
| Single-rate (standard) | Simple pricing; no penalty if you can’t shift usage. | Works with most meters; often available to all. | May not be the cheapest if you can reliably use off-peak power. |
| Time-of-use (off-peak windows) | Lower unit rate at set times (often overnight); good for hot water scheduling. | Usually smart meter; supplier-specific off-peak hours. | Peak rates can be higher; savings depend on your off-peak share. |
| Economy 7 / legacy multi-rate | Cheaper night rate can suit storage + hot water loads. | Two-rate meter; set night hours vary by region. | Day rate may be higher; not all suppliers support all legacy setups. |
| Tracker (price changes regularly) | Can be cheaper in some periods; transparent link to a published formula. | Comfort with variability; may have daily/period updates. | Costs can rise; budgeting is harder than fixed tariffs. |
| Fixed (set price for a term) | Budget certainty during the term; can protect from price rises. | Credit checks not usually required, but terms vary; often direct debit. | May include exit fees; not always cheapest if market rates fall. |
Decision checklist: who it suits (and who it doesn’t)
A heat pump tariff is likely a good fit if…
- You can schedule hot water and some heating demand to cheaper periods.
- You’re comfortable checking the exact off-peak windows and sticking to them.
- You have (or can get) a smart meter and your supplier supports it properly.
- You’re not locked into a strong fixed deal with exit fees.
It may not be right if…
- Your household’s electricity use is mostly evenings and can’t be shifted.
- You’d find variable pricing stressful (tracker or complex time bands).
- Your meter setup is unusual (legacy multi-rate, restricted hours) and you’re unsure what’s compatible.
- You rent and can’t change meter arrangements (or need landlord permission).
Tip: If you don’t know your off-peak share, start by looking at a few days of half-hourly data in your supplier app (smart meters) or use your heat pump controller schedule as a proxy. Then compare tariffs based on that split.
Costs, exclusions and common pitfalls (UK)
Most “switching mistakes” happen when people compare only the cheapest-looking unit rate and miss the conditions that apply to heat pump usage patterns.
1) Standing charge impact
Standing charges vary by region and tariff. If your usage is lower than expected (mild winter), a high standing charge can blunt savings.
2) Peak rate penalty
Some time-of-use tariffs have a noticeably higher day/evening price. If your heat pump runs hardest during cold evenings, costs can rise.
3) Smart meter requirements
Many off-peak tariffs require a functioning smart meter. If your meter isn’t communicating, billing can fall back to estimates.
4) Economy 7/10 complexity
Legacy multi-rate setups can be tricky. Off-peak hours vary by area and some properties have wiring tied to night circuits.
5) Exit fees and timing
Fixed tariffs may include exit fees. If your deal ends soon, it may be better to time the switch to avoid charges (terms vary).
6) Payment method differences
Direct debit is commonly cheapest. Prepayment and receipt-of-bill options can have fewer tariffs and different pricing.
Common misconception: A heat pump does not automatically qualify you for a special discounted national rate. Any “heat pump tariff” is still subject to supplier terms, availability, meter compatibility and regional pricing.
Also consider: If your home has solar panels and a battery, you may be able to charge cheaply (or from solar) and reduce peak imports. But export payments and battery cycling affect the best choice.
Heat pump tariff FAQs (UK)
Do I need a smart meter for a heat pump tariff?
For many time-of-use tariffs, yes — suppliers often require a working smart meter to measure usage by time band. Some standard single-rate tariffs do not require a smart meter.
Will switching affect my heat pump warranty or MCS paperwork?
Switching energy supplier doesn’t usually affect product warranties or installation certification. If you’re on a specific finance or service plan, check whether it has any energy-tariff conditions.
How do I estimate how much electricity my heat pump uses?
Start with your annual electricity usage in kWh from bills/app. If you have a separate heat pump meter or monitoring, use that for a clearer split. If not, use last winter’s usage as the most relevant period and allow for weather differences.
Is Economy 7 good for heat pumps?
It can be — particularly if you can run hot water (and some heating demand) overnight. But Economy 7 day rates can be higher, so it’s not automatically cheaper unless enough usage lands in the night window.
Can tenants switch to a heat pump-friendly tariff?
Usually yes, if you pay the energy bills and have the supplier account in your name. You may need permission for meter changes or smart meter installations. If bills are included in rent, you typically can’t choose the tariff.
Will my postcode change the prices I see?
Yes. Electricity standing charges and unit rates can vary by region because network costs differ across Great Britain. That’s why comparisons should be done using your actual postcode.
How long does a UK energy switch take?
Many switches complete in around 5 working days under the UK switching process, but delays can happen (meter issues, address matching, complex multi-rate meters). You should not be left without energy during a supplier switch.
What if I’m on prepayment?
Tariff availability can be narrower on prepayment, and some time-of-use tariffs may not be offered. It’s still worth comparing, but use your payment method in the comparison and check any smart meter requirements.
Trust, methodology and sources
Page details
- Written by
- EnergyPlus Editorial Team
- Reviewed by
- Energy Specialist
- Last updated
- June 2026
How we assess “cheaper heat pump tariffs”
We focus on effective cost for heat pump households, not marketing labels. That means we assess:
- Meter compatibility: whether a tariff requires a smart meter or supports multi-rate setups.
- Rate structure: standing charge + peak and off-peak unit rates (where applicable).
- Eligibility constraints: region, payment method (direct debit/prepay), and any special conditions.
- Fit for usage pattern: whether a typical heat pump home can realistically shift load into cheaper windows.
The scenarios on this page use simple arithmetic on unit rates to demonstrate why time-of-use tariffs can help or harm depending on off-peak share. They exclude standing charges and supplier-specific extras to keep the logic transparent.
Limitations to be aware of
- Weather variability: heat pump electricity use can change a lot between mild and cold winters.
- Control settings: flow temperature, heating schedules and hot water setpoints materially affect consumption.
- Regional pricing: Great Britain electricity regions have different standing charges and unit rates.
- Supplier terms: off-peak windows and eligibility can change; always check the tariff information before switching.
Ready to see a cheaper option for your heat pump?
Get a whole-of-market comparison based on your postcode, meter setup and likely usage pattern. No promises — just clear numbers and UK-specific tariff rules.
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