Switch to a cheaper electricity-only tariff in the UK

A practical, UK-focused guide to comparing electricity-only deals, understanding standing charges, and switching safely—whether you’re on a credit meter, prepay or Economy 7.

  • Check if electricity-only is right for your home (and when it isn’t)
  • See what really drives cost: unit rate, standing charge, payment method and meter type
  • Get an estimated comparison in minutes with whole-of-market options
Get your electricity quote How switching works

Estimates vary by region, meter type and payment method. Always check tariff terms and any exit fees before you switch.

Fast answer: how to get a cheaper electricity-only tariff

In the UK, the best way to find a cheaper electricity-only tariff is to compare deals using your postcode, meter type and payment method, then focus on the total estimated annual cost (unit rate + standing charge) rather than the headline unit rate alone.

What usually makes it cheaper

  • Lower standing charge (often overlooked)
  • Cheaper unit rate for your region and meter
  • Direct Debit pricing (where available)
  • Tariff that suits your usage pattern (e.g. Economy 7)

Quick checks before you switch

  • Are you electricity-only because you use gas elsewhere, or because you’re on all-electric heating?
  • Is your meter single-rate, Economy 7, smart or prepay?
  • Any exit fees or debt to manage?
  • Is your current tariff fixed, variable, or part of a complex arrangement (e.g. heat network)?

Key takeaways

  • For low users, standing charge can dominate.
  • Economy 7 only helps if a meaningful share of use is at night.
  • Switching electricity-only is usually no interruption to supply.
  • Always compare estimated total cost, not just p/kWh.

Important: If you’re on a heat network, an embedded network, or your landlord supplies electricity as part of rent/service charge, you may not be able to switch supplier in the usual way. Check your agreement first.

Compare & switch electricity-only (step-by-step)

  1. Gather the basics: your postcode, current supplier name, payment method (Direct Debit / receipt of bill / prepay), and meter type (single-rate / Economy 7 / smart / prepay).
  2. Use your annual usage if you have it: check past bills or your online account for kWh. If not, you can still compare using a realistic estimate (we explain how below).
  3. Compare on total estimated annual cost: unit rate + standing charge, plus any discounts/fees. This is usually the fairest way to judge value.
  4. Check tariff terms: fixed vs variable, exit fees, price cap alignment, and any conditions for Direct Debit or smart meters.
  5. Switch: in most cases your supply won’t stop. You’ll get a switch date and should provide a meter reading if asked.

Tenants: you can usually switch if you pay the electricity bill and the meter is in your home, even if you don’t own the property. If you have a prepayment meter, switching options can be more limited but still possible.

What you’ll need for the most accurate quote

Usage (kWh/year): best from your last 12 months of bills (electricity only).

Meter type: single-rate vs Economy 7 makes a big difference to rates.

Payment method: Direct Debit tariffs can differ from pay-on-receipt or prepay.

Postcode: rates vary by distribution region, so this is essential.

Get a whole-of-market electricity quote

Tell us a few details and we’ll match you to suitable electricity-only tariffs. You’ll see estimated costs and key terms to help you decide.

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No disruption: switching supplier is an admin change. Your electricity keeps flowing and your meter stays the same unless you choose to upgrade (e.g. to smart), subject to eligibility.

Electricity-only tariff types: what to compare

Most electricity-only households in the UK will be choosing between fixed and variable tariffs, with added complexity if you’re on Economy 7, prepay or time-of-use smart tariffs. The right pick depends on your usage pattern and risk tolerance.

Tariff type Best for Watch-outs What to compare
Fixed rate People who want price certainty for a set term (often 12–24 months). May have exit fees. If market prices fall, you could miss cheaper deals until the term ends. Exit fee, term length, standing charge, unit rate, payment method rules.
Variable (incl. default/standard) Flexibility; often no exit fee. Prices can change. If you’re on a supplier’s default tariff, it may not be their cheapest available option. How often prices can change, standing charge, unit rate, any discounts that can end.
Economy 7 (two-rate) Homes with storage heaters, immersion heating, EV charging at night (if the split works). Day rate can be higher. If you don’t use enough at night, it can cost more overall. Day rate, night rate, the supplier’s defined night hours, standing charge, your day/night usage split.
Prepayment Customers who prefer pay-as-you-go or have prepay meters already installed. Fewer tariff choices and switching can take longer. Top-up methods and emergency credit rules vary. Unit rate/standing charge for prepay, top-up convenience, support for smart prepay, any debt rules.

Decision checklist: who electricity-only switching suits (and who it doesn’t)

Likely to suit you

  • You only have electricity at the address (no mains gas), or you handle gas separately.
  • You can provide rough usage or a recent bill so comparisons are realistic.
  • You’re comfortable choosing between fixed (certainty) and variable (flexibility).
  • Your current tariff is ending, you’ve moved in, or you suspect you’re on a default tariff.

May not suit (or needs extra checks)

  • You’re supplied via a landlord / embedded network and don’t have supplier choice.
  • You have significant debt on the meter (switching can be restricted until resolved).
  • You rely on specialist arrangements (e.g. certain time-of-use or legacy metering setups).
  • You’re switching during a tenancy changeover—ensure the account holder details are correct.

Tip: If two deals look similar, compare the standing charge next. It can outweigh small differences in unit rate—especially for low or average users.

Costs, exclusions and common pitfalls (electricity-only)

The cheapest-looking tariff isn’t always the cheapest in practice. These are the most common reasons people end up paying more than expected after switching.

1) Standing charge surprises

A lower unit rate can be offset by a higher standing charge (paid daily). This matters most if your usage is low or seasonal.

2) Wrong meter type selected

Economy 7 (two-rate) pricing is different from single-rate. Comparing the wrong type can make a “cheap” deal look cheaper than it will be.

3) Exit fees on fixed tariffs

Some fixed deals charge a fee if you leave early. If you may move home soon, factor this into your decision.

4) Direct Debit assumptions

Some tariffs price differently by payment method. If you can’t (or don’t want to) pay by Direct Debit, ensure you compare like-for-like.

5) Estimated usage mismatch

If your quoted kWh is far from reality, your “estimated annual cost” will be too. Using your last 12 months is best where possible.

6) Prepay constraints

Not all suppliers offer prepay tariffs everywhere, and debt on a prepay meter can restrict switching until addressed.

Two realistic scenarios (with numbers)

These examples show how “cheaper” depends on your usage and standing charge. They’re illustrative only—rates vary by region, supplier and time.

Scenario A: Low-use flat (single-rate)

Assumptions
1,800 kWh/year. Tariff 1: 24p/kWh + 55p/day. Tariff 2: 27p/kWh + 45p/day. No exit fees included.
Estimated annual cost
Tariff 1: (1,800 × £0.24) + (365 × £0.55) ≈ £633
Tariff 2: (1,800 × £0.27) + (365 × £0.45) ≈ £651
Even with a higher unit rate, Tariff 2’s lower standing charge isn’t enough here—Tariff 1 is estimated cheaper.

Scenario B: All-electric home (Economy 7)

Assumptions
4,500 kWh/year, with 40% night use (1,800 kWh night / 2,700 kWh day). Economy 7 Tariff: 33p day + 16p night + 55p/day standing charge. Single-rate alternative: 26p/kWh + 55p/day.
Estimated annual cost
Economy 7: (2,700 × £0.33) + (1,800 × £0.16) + (365 × £0.55) ≈ £1,380
Single-rate: (4,500 × £0.26) + (365 × £0.55) ≈ £1,373
With a 40% night split, Economy 7 is not automatically cheaper. If your night share was higher (or day rate lower), results could change.

What these scenarios are (and aren’t)

  • They are: simple illustrations of how standing charges and day/night splits affect total cost.
  • They aren’t: promises of savings or current market rates.
  • They exclude potential extras such as exit fees, billing adjustments, and tariff-specific conditions.

A quick way to estimate your annual kWh

If you don’t have 12 months of bills, you can approximate by:

  • Using any recent bill period: kWh used ÷ days × 365 (best if it’s not a highly unusual month).
  • If you have a smart meter/app, check your monthly kWh and annualise it.
  • If your home uses electric heating, expect usage to be seasonal (winter much higher).

For the most accurate comparison, use actual annual usage where possible.

Common exclusion: some properties can’t switch normally (e.g. certain communal supplies). If you’re unsure, check your bill—if it shows a licensed supplier and an electricity meter for your home, you can usually switch.

FAQs: switching to a cheaper electricity-only tariff

Can I switch electricity supplier if I’m a tenant?

Often, yes—if you’re the bill payer and have a standard individual electricity supply. If electricity is included in rent/service charge or you’re on an embedded network, you may not have supplier choice. Check your tenancy agreement and your bill.

Will my electricity go off when I switch?

Typically no. Switching is an administrative change between suppliers. You keep the same physical supply and cables. You may be asked for a meter reading around the switch date for accurate final billing.

What if I have a prepayment meter—can I still get a cheaper tariff?

You may still be able to switch, but options can be narrower and depend on your meter type (traditional key/card vs smart prepay), supplier policies, and whether there’s debt attached to the meter. Compare specifically on prepay rates and check top-up methods.

How do I know if I’m on Economy 7 (two-rate)?

Your bill usually states Economy 7, “day/night”, or shows two unit rates. Your meter may have two readings (often labelled Rate 1/Rate 2). If you’re unsure, ask your supplier before switching so you compare the correct tariff type.

Is the cheapest tariff always the one with the lowest p/kWh?

Not necessarily. The standing charge (daily fixed cost) can change which deal is cheapest for you. That’s why comparing the estimated annual cost using your usage is usually more reliable than comparing only unit rates.

Can I switch if I’m in debt to my current supplier?

It depends. Some debts can restrict switching (especially on prepayment). If you’re struggling, it’s worth speaking to your supplier and getting independent guidance. Citizens Advice explains options for energy debt and support.

Citizens Advice guidance on problems with your energy bill

How long does an electricity-only switch take in the UK?

Timings can vary by supplier and circumstances, but many switches complete within days to a couple of weeks. Complex metering, prepay, or account issues can take longer. Your new supplier will confirm your switch date.

Should I choose a fixed or variable electricity-only tariff?

Fixed tariffs can provide predictability but may include exit fees; variable tariffs can be more flexible but prices can change. A practical approach is to compare total estimated costs and then decide based on how long you expect to stay at the property and your preference for certainty.

Trust, methodology and sources

Page governance

Written by
EnergyPlus Editorial Team
Reviewed by
Energy Specialist
Last updated
June 2026

How we assess “cheaper electricity-only”

This guide prioritises what most affects real household cost and switching success in the UK:

  • Total estimated annual cost (unit rate + standing charge) based on your usage and region.
  • Eligibility and friction: meter type (single-rate/Economy 7/smart/prepay), payment method, and property constraints.
  • Risk and flexibility: fixed vs variable terms, exit fees, and how/when prices can change.
  • Clarity: we call out common pitfalls (standing charge, Economy 7 splits, prepay limits).

Limitations: tariffs, rates and availability change. Your final bill depends on actual usage, regional pricing, and supplier terms. The scenario numbers on this page are illustrative and not live market quotes.

Independent UK sources we use

Editorial promise: we aim to explain how comparisons work in plain English, show our assumptions, and highlight where outcomes differ by region, meter type and payment method.

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Updated on 20 Jun 2026