Best tariff for an all‑electric home (UK) in 2026

A practical, UK‑specific guide to choosing the right tariff if your home runs on electricity only (heating, hot water and cooking). Includes realistic examples, pitfalls to avoid, and how to compare deals fairly.

  • What usually works best: a cheap overnight tariff if you can shift usage (or have EV/battery/storage heaters)
  • When a standard single‑rate tariff can still win (and when it won’t)
  • How to check eligibility by meter type, region and payment method before you switch
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Estimates only. Tariff availability, rates and eligibility vary by postcode, meter type and supplier checks. Always confirm rates and terms before switching.

Fast answer: what’s usually the best tariff for an all‑electric home in 2026?

For most UK all‑electric homes, the “best” tariff in 2026 comes down to how much of your electricity you can use overnight (or outside peak hours) and whether you have the right meter set‑up.

Often best

Off‑peak / time‑of‑use (e.g. cheap overnight rates)
Best if you can shift heating/hot water/EV charging to off‑peak, or have storage heaters / a home battery.

Sometimes best

Single‑rate (flat) tariff
Often better if most usage is daytime/evening, you can’t shift load, or you’re on a basic meter with limited options.

Usually not best (but can be)

High standing charge deals or niche tariffs you can’t use properly
If you can’t access the cheap hours, you may pay more overall.

Key takeaway: A cheap overnight rate only helps if you can move a meaningful share of your usage into that window. If your home’s electric heating runs mainly at peak times, a time‑of‑use tariff can cost more than a good single‑rate option.

Quick decision rule (practical)

  • Overnight share 35–40%+ (or EV/battery/storage heating): shortlist off‑peak/time‑of‑use.
  • Overnight share under ~25% and no EV/battery: start with single‑rate comparisons.
  • Economy 7 / Economy 10 already installed: compare both E7/E10 and single‑rate—either can win depending on day rate and standing charge.

What you’ll need to compare accurately

  • Your postcode (regional pricing)
  • Meter type: single‑rate, Economy 7/10, or smart meter capable of time‑of‑use
  • Payment method: Direct Debit vs prepayment
  • Estimated annual electricity use (kWh) and rough day vs night split

How to choose the best tariff for an all‑electric home

All‑electric homes are more sensitive to tariff structure because heating and hot water can dominate your usage. Use the steps below to avoid comparing the wrong products.

  1. Confirm your meter set‑up.
    • Single‑rate meter: one unit rate all day.
    • Economy 7/10: day + night (or multiple) rates. Check your exact off‑peak hours.
    • Smart meter: may enable time‑of‑use tariffs (supplier eligibility varies).
  2. Estimate your day vs night split.

    If you have half‑hourly data (smart meter app), use the last 30–90 days. If not, start with a simple estimate: what runs overnight (immersion heater, storage heaters, EV charger, battery) and for how long.

  3. Shortlist tariff types that match your usage.

    If you can’t shift usage, avoid tariffs where the daytime rate is much higher unless the overnight rate will actually be used.

  4. Compare total annual cost, not just the unit rate.

    Standing charges vary by region and can change the “winner”, especially for low‑usage flats or very efficient homes.

Good to know: Many UK tariffs price electricity differently by region (your postcode). Two neighbours in different distribution areas can see different standing charges and unit rates even on the “same” tariff name.

Two realistic examples (with numbers)

Scenario A: flat tariff wins (low night use)

Home: 2‑bed flat, electric panel heaters, immersion used mainly evenings.
Annual use: 4,500 kWh.
Night share: 15% (675 kWh night / 3,825 kWh day).

Tariff 1: single‑rate (example)
Unit 25p/kWh, standing 60p/day

Estimated annual cost: 4,500×£0.25 + 365×£0.60 = £1,125 + £219 = £1,344

Tariff 2: Economy 7 (example)
Day 30p/kWh, night 15p/kWh, standing 60p/day

Estimated annual cost: (3,825×£0.30) + (675×£0.15) + £219 = £1,148 + £101 + £219 = £1,468

Result: despite a cheap night rate, the higher day rate makes Economy 7 cost more when night use is low.

Scenario B: off‑peak wins (high night use)

Home: 3‑bed house, storage heaters + immersion on timer, occasional EV charging.
Annual use: 9,000 kWh.
Night share: 45% (4,050 kWh night / 4,950 kWh day).

Tariff 1: single‑rate (example)
Unit 25p/kWh, standing 60p/day

Estimated annual cost: 9,000×£0.25 + £219 = £2,250 + £219 = £2,469

Tariff 2: Economy 7 (example)
Day 30p/kWh, night 15p/kWh, standing 60p/day

Estimated annual cost: (4,950×£0.30) + (4,050×£0.15) + £219 = £1,485 + £608 + £219 = £2,312

Result: with a high off‑peak share, the cheaper night rate can outweigh the higher day rate.

Important: The prices above are illustrative to show the maths. Real tariffs vary by supplier, region, payment method and the exact times/structure of off‑peak rates.

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Tip for all‑electric homes: If you have storage heaters, an immersion heater on a timer, or an EV charger, mention it when you speak to an advisor—those details can change which tariff is best.

Tariff types compared (what they mean for all‑electric homes)

Use this table to narrow down the tariff type that suits your home. Then compare specific deals by total annual cost (unit rates + standing charge) for your postcode.

Tariff type Best for Watch outs Eligibility basics
Single‑rate Homes that use most electricity in the day/evening; households that can’t shift heating/hot water May be pricier if you could shift load; standing charge can dominate for low usage Works with most meters; available for Direct Debit and often prepay (varies)
Economy 7 (day/night) Storage heating; immersion timed overnight; EV charging overnight; battery charging Day rate can be much higher; off‑peak hours differ by area/meter; not all suppliers support every legacy set‑up Requires E7 meter or compatible smart set‑up; check exact off‑peak window
Economy 10 (multiple off‑peak periods) Some storage heating systems needing daytime boost periods; higher flexibility than E7 Fewer deals; off‑peak periods vary widely; switching suppliers can be more limited Requires E10‑capable meter; confirm supplier support before applying
Smart time‑of‑use (half‑hourly style) EVs, batteries, highly shiftable demand; households willing to schedule appliances Rates can change by time; peak pricing can be high; not ideal if you must heat during peak times Usually needs a working smart meter and supplier eligibility; some require Direct Debit

Decision checklist: who it suits

  • All‑electric with storage heaters or immersion timer that can run overnight
  • EV charging at home (regularly) or a home battery
  • You can comfortably shift laundry/dishwasher to off‑peak
  • You have (or can get) the right meter for the tariff you want

Decision checklist: who it may not suit

  • Your heating is mostly evening peak (panel heaters used after work/school)
  • You’re home all day and run high loads daytime (cooking, home working equipment)
  • You can’t control when hot water heats (no timer/controls)
  • You’re on a meter type that limits switching options (some legacy multi‑rate set‑ups)

What to check before you switch: exit fees (if any), tariff end date, whether rates are fixed or variable, and whether you’ll keep the same meter configuration (especially for Economy 10 and some smart time‑of‑use tariffs).

Costs, exclusions and common pitfalls (all‑electric homes)

These issues regularly cause all‑electric households to choose the “wrong” deal on paper. Use the cards below as a pre‑switch check.

1) Standing charges can outweigh unit savings

If you’re in a small flat or you’ve improved efficiency, a higher standing charge can cancel out a slightly cheaper unit rate. Always compare total annual cost using your own kWh estimate.

2) Economy 7 hours aren’t always “midnight to 7am”

Off‑peak windows vary by region, meter and settings (including BST/GMT changes). If your hot water or storage heating runs outside the off‑peak window, you may pay peak rates unexpectedly.

3) Not every supplier supports every multi‑rate meter

Some legacy or complex meter configurations can restrict tariff choice. If you’re on Economy 10 or have a specialist set‑up, confirm support before switching to avoid delays.

4) Direct Debit vs prepayment pricing differences

Some tariffs are only available on Direct Debit. Prepayment options may be fewer, and eligibility can depend on credit checks or meter type. Compare like‑for‑like for your payment method.

5) Fixed deals aren’t automatically “cheaper”

A fixed tariff gives price certainty for the term, but it can be higher than the best variable options at the time you switch. Look for exit fees and how long the fix lasts.

6) Heat pump homes: tariff choice depends on control

If you have a heat pump, you may be able to shift some demand (pre‑heat, hot water schedules), but comfort and efficiency come first. A tariff with very high peak rates may be risky if you can’t avoid them.

Safety note: If you use timers for immersion heaters or storage heating, make sure they’re correctly set and in good condition. If you’re unsure, use a qualified electrician or heating engineer.

FAQs: all‑electric tariffs in the UK (2026)

Is Economy 7 always cheaper for an all‑electric house?

No. Economy 7 can be cheaper if you use a significant share of electricity during off‑peak hours. If most of your heating and hot water happens in the day/evening, a single‑rate tariff may cost less overall.

Do I need a smart meter for time‑of‑use tariffs?

Often, yes. Many time‑of‑use tariffs require a working smart meter that can record half‑hourly consumption. Supplier requirements vary, and some tariffs may be limited to Direct Debit customers.

Can I switch from Economy 7 to single‑rate?

In many cases, yes—but it can depend on your meter type and supplier. Sometimes the meter needs reconfiguration or replacement. Ask what will happen to your meter and whether there are any delays or charges.

Are off‑peak hours the same everywhere in the UK?

No. Off‑peak windows can vary by region and by meter settings. If you’re on Economy 7/10, confirm your exact off‑peak times (and whether they change with the clocks).

What if I’m on prepayment (PAYG)?

You can still compare and switch, but the range of tariffs may be smaller and some time‑of‑use deals may not be available. Availability can depend on your meter type and supplier checks.

Does region really affect my electricity prices?

Yes. Standing charges and unit rates can vary by distribution region (based on your postcode). That’s why a tariff that looks best nationally may not be best in your area.

Could a high standing charge be a problem for me?

It can be—especially if you live in a small property, are very energy‑efficient, or spend long periods away. Compare annual costs using your kWh estimate and the standing charge in your region.

Will switching interrupt my electricity supply?

Switching supplier is designed to be seamless, and you shouldn’t lose supply. If a meter exchange or configuration change is required (more likely with some multi‑rate set‑ups), your supplier should explain what to expect.

Have a question about your meter or off‑peak hours? Use our quote form and add a note about your set‑up (Economy 7/10, storage heaters, immersion timer, EV, battery). We’ll help you compare the right tariff types.

Trust, methodology and sources

Page ownership

Reviewed by:
Energy Specialist
Last updated:
February 2026

How we assess “best tariff” for all‑electric homes

We do not name a single universal “best tariff” because outcomes depend on your meter, tariff eligibility, region, and how you use electricity. Instead, we focus on what makes a tariff best‑fit for an all‑electric household:

  • Total annual cost estimate using unit rates + standing charge (regional pricing considered).
  • Tariff structure fit: single‑rate vs multi‑rate vs time‑of‑use based on day/night split and ability to shift load.
  • Eligibility and friction: meter type compatibility (E7/E10/smart), payment method (Direct Debit vs prepay), and typical switching constraints.
  • Risk and predictability: fixed vs variable, exit fees, and exposure to high peak rates on time‑of‑use tariffs.

Assumptions used in our examples

  • Costs shown are illustrative worked examples to explain how day/night splits affect annual spend.
  • Standing charge assumed constant at 60p/day and rates shown in p/kWh for clarity (real rates vary).
  • No discounting for prompt payment or bundled products; VAT included implicitly as domestic energy pricing typically is.

Limitations (important)

  • Your actual bill depends on your consumption, exact tariff rates, and your supplier’s billing periods.
  • Some tariffs have complex time bands; a simple day/night split may not capture peak/shoulder pricing.
  • Meter exchanges and configuration changes can affect eligibility/timelines; always confirm with the supplier.

Sources (UK)

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Updated on 19 Apr 2026