Which energy suppliers offer a £100 bill credit for switching?

£100 bill-credit switching deals change frequently and depend on eligibility, region and payment method. The quickest way to see which suppliers currently offer a £100 credit for your home is to run a quote and compare live tariffs here: https://www.energyplus.co.uk/. Always check the supplier’s offer terms (credit amount, when it is paid, and whether it’s per fuel or per account).

Is the £100 bill credit paid as cash or taken off my energy bills?

In most cases it’s a bill credit, meaning it is applied to your energy account balance rather than paid as cash. The credit is usually added after you switch successfully and meet any qualifying conditions, then it reduces future bills. Check the tariff’s terms for how and when the credit is applied.

When will I receive the £100 bill credit after switching?

Timing varies by supplier and tariff. Commonly, bill credit is applied after the switch completes and your account has been active for a set period (often after the first bill or within a few months). Confirm the exact timescale in the offer’s T&Cs before you switch.

Do I need to switch gas and electricity together to get the £100 credit?

Not always. Some offers apply to dual fuel only, while others apply to electricity-only or gas-only switches. If you want to maximise savings, compare both single-fuel and dual-fuel options for your address: https://www.energyplus.co.uk/.

Who is eligible for a £100 switching bill-credit offer?

Eligibility typically depends on being a new customer, switching to a specific tariff, and meeting conditions such as paying by Direct Debit and completing the switch without cancellation. Some deals may exclude prepayment meters or certain meter types. Always review the supplier’s eligibility criteria before proceeding.

Can existing customers get a £100 bill credit?

Usually, £100 switching credits are aimed at new customers. Existing customers may have access to retention offers or other incentives, but these are not guaranteed. If you’re already with a supplier, it can still be worth comparing alternatives to see if switching delivers a better overall deal.

Will switching with a £100 bill credit affect my supply or cause downtime?

No—your energy supply continues as normal during a switch. Only the company that bills you changes. You’ll usually just need to provide opening meter readings when the switch completes.

Are £100 bill-credit deals always the cheapest option overall?

Not necessarily. A £100 credit can make a tariff attractive, but the unit rates, standing charges, exit fees and contract length can outweigh the benefit. Compare total estimated annual cost (including any credits) before choosing: https://www.energyplus.co.uk/.

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

You may still be able to switch, but it depends on the type and amount of debt and your meter setup. Some customers can switch even with debt under certain thresholds (especially for credit meters), while prepayment arrangements may have specific rules. Check with your current supplier and review the switching guidance before starting a new application.

How do I claim the £100 bill credit when I switch?

Most offers are applied automatically when you switch via the qualifying route and meet the conditions. To avoid missing out, confirm you’re selecting an eligible tariff and complete the switch in one journey. If you want to see current qualifying deals, compare options and follow the on-screen steps here: https://www.energyplus.co.uk/.

Energy suppliers offering £100 bill credit for switching

Compare whole-of-market UK home energy deals and check whether you could qualify for up to £100 bill credit (where available) when you switch. We’ll show you options based on your postcode and usage, so you can choose a tariff that fits — not just a headline incentive.

Whole-of-market comparison for gas and electricity (home energy only)
See potential bill credit / welcome credit offers alongside unit rates
Switch online in minutes with a simple form — we’ll guide you through

Check £100 credit deals How switching & credit works

Bill credit offers vary by supplier, tariff and eligibility, and may be paid after your switch completes. Always check tariff terms before proceeding.

Find UK energy deals with bill credit (whole-of-market)

Some UK energy suppliers run promotions where you can get £100 bill credit (or a similar amount) for switching to a qualifying tariff. These deals can be great value — but only if the unit rates, standing charges and tariff length stack up for your home.

Use EnergyPlus.co.uk to compare home energy tariffs across the market. We’ll highlight incentives (where available) and help you focus on what matters: your expected annual cost.

Tip: If a deal offers £100 credit but costs £100+ more over the year, it may not be a saving. Compare the total estimated cost — then decide whether the credit is still worthwhile.

What does “£100 bill credit” mean?

“Bill credit” is a credit applied to your energy account by the supplier, reducing what you pay. It’s not usually cash in your bank; it’s typically applied to your balance after your switch completes and you’ve met the promotion terms.

When it’s paid: often within the first 1–3 bills, or after a set number of days
How it’s applied: as a credit on your supplier account
What can affect it: tariff eligibility, payment method, smart meter status, and whether you cancel within a cooling-off period

Get started — check eligibility

Enter a few details to see available tariffs (including bill credit offers where present) for your home.

Heads up: £100 bill credit deals can come and go. If you see a tariff you like, check the supplier’s tariff information label and T&Cs before you switch.

Why switch for bill credit — and why compare whole-of-market

Cut your total cost, not just your first bill

A £100 credit can help with upfront costs, but your ongoing unit rates and standing charges usually matter more over 12 months.

Spot supplier incentives clearly

We surface bill credit and other incentives where they apply, so you can compare like-for-like without missing the small print.

Choose the tariff that suits your household

Fixed vs variable, dual fuel vs single fuel, smart tariffs and green options — we help you filter to what fits your home.

How to compare £100 bill credit energy deals properly

If you’re searching for “energy suppliers offering £100 bill credit for switching”, you’re likely trying to maximise value. The easiest way to avoid a costly mistake is to compare on total expected annual cost and then treat credit as an extra — not the main driver.

Key costs to check

What to compare	Why it matters
Unit rate (p/kWh)	A small difference can add up across your annual usage.
Standing charge (p/day)	Paid regardless of use; especially important for low-usage households.
Tariff length & exit fees	Some deals lock you in; leaving early could reduce the value of the credit.
Payment method (Direct Debit etc.)	Credits can be restricted to certain payment types or paperless billing.

How bill credit is usually applied

Common rule	What it means for you
New customers only	If you’ve been with the supplier recently, you may not qualify.
Applied after switching completes	The credit may not appear instantly; check the stated timeframe.
Must remain on supply	Leaving too soon could mean the credit is withheld or reversed.
Limited-time promotion	Offers may end or change; take screenshots / save terms when you apply.

How switching energy supplier works (and when credit shows up)

Switching your home energy supplier in Great Britain is normally straightforward. You don’t need an engineer visit, and your supply won’t be interrupted — you’re simply changing who bills you.

Compare tariffs: check unit rates, standing charges, tariff length, exit fees and any £100 bill credit terms.
Apply to switch: you’ll provide your address and (where required) meter details. If you’re unsure, we’ll guide you.
Cooling-off period: you typically have a short window to change your mind (check your supplier’s exact terms).
Switch completes: your new supplier takes over billing; you’ll submit meter readings if requested.
Bill credit is applied: if eligible, the supplier adds credit to your account within the timeframe stated in the offer.

Good to know: If you pay by monthly Direct Debit, the £100 bill credit may reduce your balance rather than reduce your Direct Debit immediately. Your supplier may reassess your payments after a few bills.

Eligibility checklist for £100 bill credit switching offers

Because promotions vary by supplier and tariff, it’s worth checking these common eligibility points before you switch:

Typical requirements

New customer to the supplier (often not supplied within a recent period)
Qualifying tariff only (not every tariff includes the credit)
Payment method such as Direct Debit and/or paperless billing
Home energy supply at a domestic address
Switch completes successfully (not cancelled during cooling-off)

Common pitfalls to avoid

Ignoring exit fees on your current tariff (they can wipe out the credit)
Comparing only the headline £100 and not the annual cost
Assuming the credit is instant (it often isn’t)
Not keeping proof of the offer terms at sign-up
Wrong meter/tariff match (e.g. smart tariff requirements)

Is £100 bill credit actually a good deal?

It can be — but only in context. Here are three quick rules of thumb UK households use when judging bill credit offers:

1) Compare annual cost first

If Tariff A is £80 cheaper over the year than Tariff B, a £100 credit on Tariff B might still win — but you need the maths.

2) Check exit fees & lock-in

A credit is less valuable if you might move house or switch again soon. Exit fees can exceed the incentive.

3) Confirm how/when credit is paid

If the credit arrives months later, it may not help with immediate bills. Timing matters for budgeting.

Regional and meter considerations in the UK

Your available tariffs (and any bill credit offers) can vary depending on where you live and the type of meter you have. When you compare, we take postcode into account to show relevant options.

Postcode & network area

Standing charges and availability can differ by region due to local network costs. A £100 credit might appear in one area but not another.

Smart meters & tariff eligibility

Some tariffs require a compatible smart meter or specific meter configuration. If you’re unsure what you have, still submit the form — we’ll help you identify the best matches.

FAQs: £100 bill credit energy switching

Do all energy suppliers offer £100 bill credit for switching?

No. Bill credit offers are promotional and can be limited by supplier, tariff, region and time. The best approach is to compare what’s available for your postcode and household usage, then check each tariff’s terms.

Is bill credit the same as cashback?

Not usually. Bill credit is applied to your energy account. Cashback (where offered) is typically paid out separately. Always confirm what type of incentive it is and when it’s paid.

Will I lose supply during the switch?

In most cases, no. Switching changes who bills you rather than physically disconnecting your home. Your gas and electricity supply should remain uninterrupted.

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

It depends. Some situations allow switching, but rules and eligibility vary and you may need to resolve balances first. If you’re unsure, submit your details and we’ll explain the typical routes available.

Do I need my MPAN/MPRN to get a quote?

Not always. Many households can start comparing with a postcode and basic details. If extra meter info is required for a particular tariff, we’ll advise next steps.

How long does it take to receive the £100 bill credit?

Timeframes vary by supplier and promotion. Often it’s applied after your switch completes and within the first few bills, but you should rely on the tariff’s stated terms.

Why homeowners use EnergyPlus to compare switch offers

Whole-of-market focus

We compare across the market so you can see more options than a single-supplier quote journey.

Clear, household-first comparisons

We prioritise expected annual cost and highlight where bill credit applies — so you can make a balanced decision.

Helpful support if you get stuck

From meter questions to tariff terms, we help you understand what you’re choosing before you switch.

“I was tempted by the £100 credit, but the comparison made it obvious which tariff was actually cheaper over the year.”
Homeowner, UK

“Simple form, clear options, and I understood when the credit would be applied before switching.”
Dual fuel customer, UK

Ready to check £100 bill credit switch deals for your postcode?

Submit the short form to see available home energy tariffs and any bill credit promotions that apply. We’ll help you compare the total cost, not just the incentive.

Check deals & switch

Home energy only. Offers subject to supplier terms.

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Updated on 14 Jan 2026