Cheapest tariff for electric radiators UK (2026 guide)
Find the cheapest electricity tariff type for homes heated by electric radiators — with UK meter rules, realistic cost examples, and a quick quote form to compare whole-of-market options.
- Clear answer first: what’s usually cheapest for electric radiator heating (and when it isn’t)
- How Economy 7, single-rate, and smart time-of-use tariffs compare in 2026
- Two realistic scenarios with numbers (assumptions shown)
Estimates only. Your best tariff depends on your meter, region, payment method and when you use electricity. Availability and prices can change.
Fast answer: what’s usually the cheapest tariff for electric radiators?
In the UK, the cheapest tariff for electric radiators is usually the one that matches when your home uses most electricity:
Often cheapest
Economy 7 (or another multi-rate) if you can reliably shift a large share of heating to overnight/off-peak (common with storage heaters, less so with standard panel radiators).
Often simplest / best for many
Single-rate tariffs if most of your heating happens daytime/evening, or you can’t predict usage. Many electric radiator households fall into this category.
Potentially cheapest (but variable)
Smart time-of-use (TOU) tariffs if you’re happy with changing peak/off-peak periods and can automate/discipline usage (and you have a compatible smart meter).
Important: Electric radiators (panel / convection / oil-filled) don’t automatically make Economy 7 cheaper. Economy 7 is designed for heavy off-peak use. If your heating is mainly evening and early morning, you can end up paying a higher day rate and a higher standing charge than a comparable single-rate deal.
Key takeaways (2026)
- Start with your meter: single-rate vs Economy 7/10 vs smart TOU. Your best option depends on what you can actually access.
- Day rate matters for electric radiator homes: if you heat rooms in the evening, the day unit rate can dominate your bill.
- Look beyond unit rate: standing charge, exit fees, payment method (Direct Debit vs prepay), and regional pricing can change what’s “cheapest”.
- Use a usage split: estimate what % of your electricity is off-peak. That one number often decides whether Economy 7 is worth it.
Compare tariffs for electric radiator homes
Tell us a few details and we’ll match you with tariff types that typically suit electric heating (single-rate, Economy 7, and where available, smart time-of-use). We’ll use your postcode to account for regional pricing and network area differences.
Tip before you start: If you can, check your meter/bill for wording like “Rate 1 / Rate 2” (multi-rate) or “Economy 7”. If you’re not sure, we can still help — just submit what you know.
What you’ll need
- Postcode (to find your regional rates)
- Email and phone (so we can send/confirm results)
- Your name (for the quote)
Two quick checks for electric radiator users
- 1) When do you heat most?
- Mostly daytime/evening tends to favour single-rate. Regular overnight heating (or storage heating) can favour Economy 7.
- 2) Do you have a smart meter?
- A working smart meter can widen access to time-of-use tariffs, but the “cheapest” depends on your routine and comfort with variable pricing.
Get a quote (whole-of-market)
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Tariff types compared (what matters for electric radiators)
If you heat your home with electric radiators, your day rate, standing charge, and off-peak access usually matter more than small headline differences. Use this table to shortlist the tariff type to compare in your postcode.
| Tariff type | Best for | Watch-outs | What to check before switching |
|---|---|---|---|
| Single-rate (standard) | Electric radiators used mainly daytime/evening; unpredictable heating patterns; most flats without storage heating. | May be pricier than off-peak options if you can genuinely shift lots of usage overnight. | Standing charge; exit fees; Direct Debit vs prepay pricing; any discounts tied to bundles. |
| Economy 7 (two-rate) | Homes that can keep a high off-peak share (often 40%+), especially with storage heaters or overnight water heating. | Higher day unit rate can make evening heating expensive; off-peak times vary by region/meter setup. | Your exact off-peak hours; whether your meter is configured correctly; whether your supplier supports your meter type. |
| Economy 10 / other multi-rate | Some all-electric properties with specific heating setups; may suit mixed daytime + night charging in certain regions. | Limited availability; off-peak windows can be complex; fewer suppliers support it. | Whether suppliers in your area will take on your meter; whether you’ll be forced to change meter/tariff. |
| Smart time-of-use (TOU) | People who can avoid peaks (e.g., heat earlier, automate via timers), and are comfortable with changing rates and rules. | Can be expensive at peak times; not ideal if you must heat mostly at peak; needs a working smart meter. | Peak windows; price caps/price floors (if any); how often rates change; whether standing charges are higher. |
Decision checklist (who it suits / who it doesn’t)
Economy 7 is more likely to suit you if…
- You can shift around 40%+ of electricity use to off-peak (estimate).
- You have storage heaters, or you can pre-heat/charge overnight and coast through the day.
- You run high-load appliances overnight (dishwasher, washing, immersion where safe and appropriate).
- You know your off-peak hours (or can confirm them with your supplier).
Single-rate is more likely to suit you if…
- Your heating is mainly evenings (after work/school) and weekends.
- You use electric radiators room-by-room and want simple budgeting.
- You can’t consistently shift usage to overnight (noise, routines, building rules).
- You’re on (or considering) prepayment and want the widest availability.
Reality check for electric radiators: Unless you can store heat (or are comfortable pre-heating), you may struggle to move enough heating into off-peak hours to beat a good single-rate tariff.
Two realistic cost scenarios (with assumptions)
Scenario A: Electric radiators used evenings (single-rate often wins)
Home: 1–2 bed flat, all-electric, panel radiators used mostly 5pm–11pm. Annual electricity use: 4,500 kWh. Off-peak share: 15% (675 kWh). Assumed rates (illustrative):
- Single-rate: 24p/kWh, standing charge 55p/day
- Economy 7: day 28p/kWh, night 14p/kWh, standing charge 60p/day
Estimated annual cost:
- Single-rate: (4,500×£0.24) + (365×£0.55) ≈ £1,281
- Economy 7: (3,825×£0.28) + (675×£0.14) + (365×£0.60) ≈ £1,385
With only ~15% off-peak usage, the higher day rate and standing charge can outweigh the cheap night rate.
Scenario B: High off-peak use (Economy 7 can win)
Home: 2–3 bed all-electric property with storage heating or strong overnight load shifting. Annual electricity use: 8,000 kWh. Off-peak share: 55% (4,400 kWh). Assumed rates (illustrative):
- Single-rate: 24p/kWh, standing charge 55p/day
- Economy 7: day 28p/kWh, night 14p/kWh, standing charge 60p/day
Estimated annual cost:
- Single-rate: (8,000×£0.24) + (365×£0.55) ≈ £2,121
- Economy 7: (3,600×£0.28) + (4,400×£0.14) + (365×£0.60) ≈ £1,839
When most usage is genuinely off-peak, the cheaper night rate can more than offset the pricier day rate.
These examples are illustrative to show how the maths works. Real tariffs vary by region, supplier, payment method and meter configuration, and prices can change. Standing charges and unit rates shown are not a market promise.
Costs, exclusions and common pitfalls (electric radiator homes)
“Cheapest” can change once you include standing charges, exit fees, meter limitations and your heating pattern. Here are the most common UK-specific gotchas we see with electric heating comparisons.
1) Standing charge can dominate low usage
If you don’t use much electricity (e.g., small flat), a higher standing charge can cancel out a lower unit rate. Always compare annual estimated cost, not just p/kWh.
2) Economy 7 off-peak hours aren’t universal
Economy 7 is typically 7 hours overnight, but the exact times can differ by region and meter setup. If your radiators run outside those hours, you’ll pay the higher day rate.
3) Electric radiators vs storage heaters
Standard electric radiators produce heat when powered. Storage heaters store cheap overnight heat. If you have electric radiators (not storage), Economy 7 can be harder to benefit from.
4) Payment method affects pricing
Some suppliers price Direct Debit differently from prepayment. If you’re on a prepay meter or considering it, make sure you compare like-for-like.
5) Exit fees & fixed-term traps
A fixed tariff may have an exit fee. If you might move home (common for renters), factor that in and check supplier terms before switching.
6) Smart TOU isn’t “set and forget”
Time-of-use deals can be great if you can avoid peaks, but they can also raise costs if your heating must run at peak times. Check peak windows and how prices are updated.
If you rent: You can usually switch your energy supplier, but your tenancy may include rules about meter changes or debt on the meter. If in doubt, check your tenancy agreement and speak to your landlord/agent before requesting a meter exchange.
Mini-check before you choose a “cheap” tariff
- Is it single-rate, Economy 7, or TOU — and does your meter support it?
- What are the standing charge and unit rates (day and night if applicable)?
- Any exit fees, and how long is the fix?
- Are prices shown for your payment method (Direct Debit / prepay) and your postcode?
- If Economy 7: what are your exact off-peak hours?
FAQs: cheapest electricity tariffs for electric radiators (UK)
Are electric radiators cheaper on Economy 7?
Not automatically. Economy 7 can be cheaper only if you can run a large share of your heating (and other electricity use) during off-peak hours. If your radiators run mainly in the evening, a single-rate tariff is often better value because Economy 7 day rates can be higher.
How do I know if I’m on Economy 7?
Check your bill or online account for terms like Economy 7, two-rate, or Rate 1 / Rate 2. Your meter may show two readings. If you have a smart meter, your supplier can confirm your tariff and the off-peak hours.
What are Economy 7 off-peak hours in the UK?
It’s usually 7 hours overnight, but the exact time window varies by region, meter type and how your meter is configured. Don’t assume it’s the same as a neighbour’s. Your supplier should be able to tell you the exact hours for your meter.
Do I need a smart meter for the cheapest tariff?
No. Many competitive tariffs are available without a smart meter (including single-rate and some Economy 7 deals). However, a working smart meter can increase access to time-of-use tariffs. Whether those are cheapest depends on your routine and how well you avoid peak prices.
Will switching tariff affect my radiator controls or timers?
Usually no — your radiators and timers are separate from the tariff. But if you move to Economy 7 or a TOU tariff, you may want to change timer settings so heating (where practical) happens during cheaper periods.
I’m in a flat with electric heating. What should I compare first?
Start with single-rate vs Economy 7 based on when you’re at home and heating rooms. Then compare (1) standing charge, (2) day unit rate, (3) night unit rate if relevant, and (4) any exit fees. If you’re unsure about your meter, comparing via postcode and confirming meter details before switching helps avoid mismatches.
Can I switch from Economy 7 to single-rate?
Often, yes — but it can depend on your meter and supplier. Some switches may involve a meter reconfiguration or exchange. Always check whether there are fees, appointment timescales, and whether your property has legacy multi-rate setups (e.g., Economy 10) with fewer supplier options.
What’s the single biggest mistake people make with electric radiator tariffs?
Choosing an off-peak tariff based on a cheap night rate without checking how much electricity they actually use at night. For electric radiator homes, the day rate can drive most of the cost if heating happens evenings.
Trust, methodology and sources
Page ownership
- Written by
- EnergyPlus Editorial Team
- Reviewed by
- Energy Specialist
- Last updated
- February 2026
How we assess “cheapest” for electric radiators
- We start with tariff structure, not hype: single-rate vs multi-rate (Economy 7/10) vs smart TOU, because electric radiator costs are driven by the timing of use.
- We model costs using: unit rate(s) + standing charge × 365 days, then apply a realistic off-peak percentage to show when Economy 7 can beat single-rate.
- We include UK constraints: regional pricing differences, payment method differences, meter compatibility, and supplier availability by meter type.
- We flag limitations: your actual off-peak hours, thermostat/timer behaviour, building insulation, and lifestyle can change results materially.
Limitations: This guide can’t name a single “cheapest tariff for everyone” because UK energy pricing varies by postcode, supplier, payment method, meter type, and time of use. Use the comparison form to see options for your location and circumstances.
Sources (UK)
- Ofgem (Great Britain energy regulator) — guidance on energy tariffs, switching, and consumer protections.
- Citizens Advice: Energy — practical advice on bills, meters and switching.
- GOV.UK: Energy — official UK information and related schemes/guidance.
Ready to find the cheapest tariff for your electric radiator setup?
Compare whole-of-market options using your postcode and meter type. We’ll help you shortlist the tariff structures that fit how you actually heat your home.
EnergyPlus provides comparisons for domestic energy only. Tariffs and eligibility vary; always check supplier terms before you switch.
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