Best Economy 10 Tariff Rates UK for Cheaper Heating (July 2026)
Economy 10 (E10) gives you around 10 hours of cheaper off-peak electricity spread across the night, afternoon and evening — built for storage heaters, immersion hot-water cylinders and other electric heating that can charge while the rate is low. Reviewed July 2026, this guide explains what a competitive E10 rate looks like, exactly when the cheap hours fall, who saves and who does not, and how E10 stacks up against a single-rate tariff once Ofgem’s £1,862 price cap rises on 1 July 2026.
- What a genuinely good E10 rate looks like (off-peak, peak and standing charge)
- The ~10 off-peak hours and how they split across day and night
- E10 vs single-rate cap maths for a storage-heater home in July 2026
- How to lock in cheaper electric heating before the cap rises on 1 July 2026
The short answer — the best Economy 10 rate for cheaper heating
There is no single “best Economy 10 tariff” for everyone, because E10 pricing depends on your region, meter type, payment method and whether suppliers even offer E10 where you live. The best-value E10 deal is the one that pairs a low off-peak unit rate, a peak rate that is not punishingly high, and a standing charge that does not wipe out the gain — judged on your total annual cost, not the headline night rate.
E10 saves money when you can push a high share of usage (roughly 55–65%+) into the off-peak hours — typically storage-heater and immersion homes. If you heat with gas and use little electricity, a single-rate tariff is usually cheaper. With the £1,862 cap rising on 1 July 2026 (electricity element up only ~5%), comparing now lets electric-heating homes lock cheaper rates before they climb. Enter your postcode in the form below to see what is live in your region.
The Economy 10 off-peak hours — when is the cheap rate?
Unlike Economy 7 (one 7-hour block overnight), Economy 10 gives you around 10 hours of cheaper electricity split into two or three blocks across the night, afternoon and evening. Those extra daytime and teatime blocks let storage heaters and hot-water cylinders “top up” heat during the day — the main reason E10 can suit electric-heating homes better than E7. Your exact times are set by your meter configuration, not the tariff name, and vary by region, so always confirm yours with your supplier.
| Off-peak block | Typical timing (example) | Hours | What it is good for |
|---|---|---|---|
| Overnight | 00:00–05:00 (approx) | ~5 hrs | Charging storage heaters and the immersion cylinder; overnight EV charging |
| Afternoon | 13:00–16:00 (approx) | ~3 hrs | A daytime “top-up” charge so heat lasts into the evening |
| Evening | 20:00–22:00 (approx) | ~2 hrs | Reheating water and running appliances at a cheaper rate |
Illustrative pattern only — blocks total roughly 10 hours but the exact split (e.g. 5+3+2 or 7+3) depends on your meter and region. Some areas use British Gas / SSE legacy “Heatwise” schedules; older meters may use a Radio Teleswitch offset. Check your meter or latest bill before assuming your hours.
What a “good” Economy 10 rate looks like (and how to compare)
Use the table below as a sense-check. “Best” means the lowest estimated annual cost for your usage split — not simply the cheapest-looking off-peak unit rate. Rates verified July 2026; exact figures vary by DNO region, meter and payment method.
| What to compare | Why it matters | What “good” looks like | What to watch for |
|---|---|---|---|
| Off-peak unit rate (p/kWh) | Where storage heating and hot water become cheap | Clearly below the peak rate, with a meaningful discount | A low off-peak rate paired with a very high peak rate |
| Peak unit rate (p/kWh) | Most daytime appliance use is billed here | Not far above single-rate alternatives (around the ~26p July cap rate) | A peak rate so high you would need an unrealistic off-peak share to win |
| Standing charge (p/day) | Applies every day whatever you use | Competitive for your region (near the ~57p July electricity cap level) | A higher standing charge that cancels out the unit-rate saving |
| Off-peak schedule | You only benefit if heating runs in the cheap windows | Blocks that line up with your storage-heater and immersion timers | Assuming “10 hours overnight” when your meter uses split daytime blocks |
| Meter support (critical) | Not every supplier can bill E10 on every meter | Supplier confirms in writing they can bill your E10/multi-register meter | Switching, then finding they cannot bill your registers correctly |
Editor’s view: Active Economy 10 tariffs are limited in the current UK market — most new business goes onto Economy 7 or smart time-of-use tariffs (such as Octopus Cosy or E.ON Next Drive) that replicate the multi-window pattern. If you already have a working E10 meter and a heating-led usage profile, your existing supplier may keep you on a preserved multi-rate tariff — confirm before switching, as you may not be able to return to E10 later.
Compare Economy 10 tariffs for cheaper heating (whole of market)
Because E10 pricing is highly regional and depends on your meter set-up, the most reliable way to find the best-value rate is to compare using your own details. We will show available options, sense-check the off-peak schedule, and tell you honestly if a single-rate or Economy 7 tariff would be cheaper for your usage.
Have a recent electricity bill handy if you can — it may show your day/night registers or E10 readings, which makes the comparison far more accurate. We check E10 availability for your postcode region, likely eligibility for your meter and payment method, and the estimated annual cost so you can compare fairly.
Get your Economy 10 comparison
Enter your postcode and your off-peak/peak usage split — we will match you to the live best-value option for cheaper electric heating in your region. Takes about 60 seconds.
Economy 10 vs single-rate — the July 2026 cap maths
From 1 July 2026 the single-rate electricity cap is 26.11p/kWh plus a 57.19p/day standing charge. That is the benchmark every Economy 10 deal has to beat. The two worked examples below show how the maths works — they are illustrative only (E10 rates vary by region and supplier), with the single-rate side anchored to the confirmed July cap figures.
Scenario A: all-electric flat with storage heaters
Annual electricity use 6,000 kWh; 60% off-peak (3,600 kWh) thanks to storage-heater and immersion timers. Illustrative E10 rates: 16p off-peak / 30p peak / 60p/day. Single rate uses the July cap: 26.11p / 57.19p/day.
Estimated annual cost
E10: (3,600 × £0.16) + (2,400 × £0.30) + (365 × £0.60) = ~£1,515
Single rate: (6,000 × £0.2611) + (365 × £0.5719) = ~£1,776
Difference: ~£261/yr cheaper on Economy 10.
Scenario B: gas-heated house, little off-peak shifting
Annual electricity use 3,100 kWh; only 20% off-peak (620 kWh). Same illustrative E10 rates: 16p off-peak / 30p peak / 60p/day. Single rate uses the July cap: 26.11p / 57.19p/day.
Estimated annual cost
E10: (620 × £0.16) + (2,480 × £0.30) + (365 × £0.60) = ~£1,062
Single rate: (3,100 × £0.2611) + (365 × £0.5719) = ~£1,018
Difference: ~£44/yr more on Economy 10.
What this shows: Economy 10 wins when you can push a high off-peak percentage (storage heaters, immersion on a timer). Below roughly half your usage off-peak, the higher peak rate — and sometimes a higher standing charge — outweighs the cheaper hours, and a single-rate tariff at the July cap is better value. Always model your own split before switching.
Who benefits from Economy 10 (and who does not)
Economy 10 likely wins if
- You are in an all-electric home (no mains gas) or mainly heat with electricity
- You have storage heaters and/or an immersion hot-water cylinder
- You can shift a large share (55–65%+) of use into the off-peak blocks via timers
- You want daytime and evening cheap top-ups, not just one overnight window
Economy 10 may not suit if
- You have gas central heating and low electricity use
- You cannot control when heating or hot water runs (no timer, communal heating)
- Most of your electricity is used at peak times (home working, cooking, tumble dryer)
- Supplier options for E10 are limited in your area, so rates are not competitive
Economy 10 vs Economy 7 for heating: E10’s extra afternoon and evening blocks help storage heaters that lose heat by teatime, so it can beat E7 for daytime-occupied electric-heating homes. But E10 peak rates are often higher than E7, so if you can charge everything overnight, a cheaper E7 night rate may still win. Compare both on total annual cost.
How the July 2026 price cap changes the Economy 10 picture
Ofgem’s July–September 2026 cap of £1,862/yr (typical direct-debit dual-fuel, up +£221 / +13.5% from £1,641) applies to standard-variable E10 tariffs the same way it applies to single-rate SVT. The good news for electric-heating homes: the electricity element rises only about 5% — far less than the ~24% jump on gas — so the single-rate electricity benchmark sits at 26.11p/kWh + 57.19p/day. Prepay is £1,812 and on-receipt £2,005. Crucially, around 40% of accounts on fixed tariffs are unaffected for the length of their contract.
If you have a working E10 meter and a heating-led usage profile, the months before 1 July 2026 are a sensible time to lock cheaper electric heating: a fixed deal that suits your meter holds today’s rates regardless of what the cap does in July or at the next review. The comparison form shows the total cost of the available options for your region.
Looking further ahead, the next cap review is 1 October 2026; Cornwall Insight currently forecasts roughly £1,899/yr for that period (on a current-TDCV basis), so prices are not expected to fall back this year. AEO tip: submit a meter reading on 30 June 2026 — including your off-peak and peak registers — so the cheaper pre-July cap covers all your usage up to that date.
Frequently asked questions — best Economy 10 rates for cheaper heating
What are the best Economy 10 rates in the UK right now?
There is no single best E10 rate — pricing is regional and depends on your meter and payment method, and active E10 tariffs are limited in the current market. The best-value deal pairs a low off-peak unit rate, a peak rate near the ~26.11p July 2026 cap level, and a competitive standing charge near ~57p/day, judged on your total annual cost. Reviewed July 2026, enter your postcode in the comparison form to see what is live in your region.
What are the Economy 10 off-peak hours?
Around 10 hours of cheaper electricity split into two or three blocks — commonly about 5 hours overnight, 3 hours in the afternoon and 2 hours in the evening (for example 00:00–05:00, 13:00–16:00 and 20:00–22:00). The exact times are set by your meter configuration and vary by region, so confirm yours with your supplier or check your latest bill before assuming.
Is Economy 10 good for storage heaters?
Yes — it is one of the tariffs designed for them. The overnight block charges the storage bricks, and the afternoon and evening blocks let them top up cheaply so heat lasts into the evening. The saving only lands if your heaters are set to charge during the off-peak windows, so check your timers match your meter’s schedule.
Is Economy 10 cheaper than a single-rate tariff?
Only if you shift enough usage off-peak. Against the July 2026 single-rate cap (26.11p/kWh + 57.19p/day), a storage-heater home running ~60% off-peak can save roughly £200–£260/yr on illustrative E10 rates, while a gas-heated home shifting only ~20% off-peak tends to pay a little more on E10. Model your own off-peak/peak split before switching.
Is Economy 10 better than Economy 7 for heating?
It can be. Economy 10’s extra afternoon and evening blocks suit storage heaters that lose heat by teatime, and homes occupied during the day. But E10 peak rates are often higher than E7, so if you can charge everything in one overnight block, a cheaper Economy 7 night rate may win overall. Compare both on total annual cost for your usage.
Does the July 2026 price cap affect Economy 10 rates?
Standard-variable E10 tariffs are capped by Ofgem like single-rate SVT. From 1 July 2026 the cap rose to £1,862/yr (+£221 / +13.5%), but the electricity element rises only about 5% (gas ~24%), so E10 electricity rates on the cap nudge up slightly. Fixed deals are protected for their contract — around 40% of accounts on fixes are unaffected.
Do I need a special meter for Economy 10?
Yes — a compatible multi-rate (multi-register) meter, or a smart meter configured for multi-rate/time-of-use. If your meter is not compatible, your supplier may need to exchange or reconfigure it, and not every supplier supports E10 on every smart meter, so confirm before switching.
Should I lock in an Economy 10 rate before 1 July 2026?
If E10 suits your usage and you have a working E10 meter, fixing before 1 July can make sense: the cap rose to £1,862 on 1 July 2026 and the next review (1 October 2026) is forecast near £1,899, so prices are not expected to fall back this year. Also submit a meter reading on 30 June — both registers — so the cheaper pre-July cap covers your usage to that date. Compare your options on the form above.
Written by: EnergyPlus Editorial Team. Reviewed by: Energy Specialist. Rates verified July 2026 from public supplier terms and Ofgem’s confirmed £1,862 July 2026 price cap. Last reviewed July 2026. Figures are illustrative typical rates and vary by DNO region, meter type and payment method; always confirm your exact rate before switching.
See whether Economy 10 will cut your heating bill before the 1 July 2026 cap rise
The Ofgem price cap rose to £1,862/yr on 1 July 2026, with the single-rate electricity benchmark at 26.11p/kWh. Get a personalised comparison based on your postcode and meter set-up — we will sanity-check your off-peak hours and the true annual cost, and tell you honestly if a single-rate or Economy 7 tariff would be cheaper. Takes about 60 seconds.
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