Will my business energy supply be interrupted when I switch?

No. Switching business energy suppliers does not interrupt your gas or electricity supply. The physical network stays the same; only the company billing you changes.

How long does it take to switch business gas and electricity supplier?

Timescales vary by supplier and contract status, but switching often takes a few weeks. If you’re at the end of your contract, it’s usually straightforward. If you’re switching mid-contract, the process can still happen but may involve exit fees—so it’s worth checking your contract end date first.

When is the best time to switch business energy supplier?

The best time is typically before your current contract ends—often in the renewal window stated on your agreement. Starting early helps you avoid rolling onto expensive out-of-contract or deemed rates and gives you more time to compare prices and terms.

Can I switch business energy supplier if I’m in a fixed-term contract?

Yes, but you may need to pay an early termination or exit fee. Check your current contract terms for notice period, end date and any charges. If you’re unsure, gather your latest bill and contract details and confirm with your supplier or your energy intermediary.

What information do I need to switch business electricity and gas?

You’ll usually need: your business name and supply address, the current supplier name, your MPAN (electricity) and MPRN (gas), and an estimate of usage (from recent bills). Having a recent bill to hand speeds things up and helps ensure quotes are accurate.

What are MPAN and MPRN numbers and where can I find them?

MPAN (Meter Point Administration Number) identifies your electricity supply, and MPRN (Meter Point Reference Number) identifies your gas supply. You can usually find them on your business energy bill, online account, or on supplier correspondence.

Can I switch both business gas and electricity to one supplier?

Yes. Many businesses choose a dual-fuel supplier for simpler administration and one main point of contact. However, it can still be worth comparing separate gas and electricity deals to ensure you’re getting the best overall value.

What is a deemed or out-of-contract rate and how do I avoid it?

A deemed or out-of-contract rate is what you may pay if you’re not on an agreed fixed or negotiated tariff (for example, after a contract ends). These rates can be higher. You can avoid them by renewing or switching before your contract end date and ensuring a new contract starts immediately after the old one finishes.

Are there any fees for switching business energy suppliers?

Switching itself is typically free, but you may face exit fees if you leave a fixed-term contract early. Always review your current terms (including notice periods) before agreeing a new contract.

How can EnergyPlus help me switch business gas and electricity supplier?

EnergyPlus can help you compare business gas and electricity deals, identify competitive tariffs for your usage, and guide you through the switching process. To get started, use the enquiry form on https://www.energyplus.co.uk/business-energy/switch-business-gas-and-electricity-supplier-uk and have a recent bill available for the fastest and most accurate quote.

Switch business gas and electricity supplier in the UK

Q: How do I switch business gas and electricity supplier in the UK?

To switch business gas and electricity supplier, compare available tariffs, choose the best option for your business, and start the switch with your new supplier or broker. You’ll typically need your business address, current supplier details and your MPAN (electricity) and MPRN (gas). The new supplier manages the transfer, and your supply continues without interruption.

A practical, UK-focused guide to changing your business energy supplier—what you’ll need, how long it takes, the common pitfalls (like rollover contracts), and how to compare like-for-like tariffs.

Check your current contract, notice period and any exit fees before you switch
Compare quotes using your annual kWh usage and meter type (single-rate, multi-rate, half-hourly)
Switching is usually supplier-led—your gas/electricity stays on during the change

Get your business energy quote How switching works

Estimates only. Quotes and availability vary by meter type, consumption, credit checks and supplier criteria.

Fast answer: how to switch business gas and electricity supplier

In the UK, switching business energy usually means agreeing a new contract (directly with a supplier or via a broker/comparison service), then the new supplier handles the changeover using your meter details. Your supply typically continues uninterrupted. The two things that most often delay or derail a switch are contract notice periods (including rollover/auto-renewal terms) and meter information mismatches (MPAN/MPRN, site address, or meter type).

What you need

Business name, supply address and postcode
MPAN (electricity) and/or MPRN (gas)
Annual usage in kWh (or recent bills/meter reads)
Contract end date and notice period (if known)

Typical timescales (indicative)

Microbusinesses: often a few weeks to complete
Half-hourly/AMR sites: can take longer depending on data and contract setup
New connections / vacant sites: varies by network processes

Key takeaways

Compare on total cost (unit rate + standing charge + contract length)
Ask whether prices are fixed or flexible, and what’s included
Check whether VAT is 5% (qualifying) or 20%

Important: If you’re in a fixed-term contract, switching early may trigger exit fees. If your contract has rolled over, you may be on out-of-contract rates (often higher) or in a new term—always confirm in writing with your current supplier.

Compare business energy quotes (whole-of-market approach)

Tell us a few details and we’ll look for suitable business gas and/or electricity options. We’ll aim to match quotes to your meter type, usage and contract preferences—then you can decide whether to proceed.

1) Share key details

Postcode, contact info, and what you’re switching (gas, electricity or both).

2) We compare quotes

We use your usage and meter type to compare like-for-like tariffs where possible.

3) You choose next steps

No disruption to supply during switching. Terms and eligibility vary by supplier.

Tip: If you have a recent bill handy, it can help confirm your MPAN/MPRN and whether your meter is single-rate, multi-rate, smart, or half-hourly (HH).

Get your quote

We’ll use these details to contact you with options. If you prefer, you can ask for email-only updates.

How switching business energy works (step-by-step)

Check your current agreement: find your end date, renewal window, notice period and any exit fees. If you’re unsure, ask your current supplier for the contract terms in writing.
Confirm your meter details: electricity MPAN and gas MPRN, site address, and meter type (standard/smart/AMR/HH). If details don’t match industry records, switching can be delayed.
Compare like-for-like quotes: ensure unit rates and standing charges are clear, along with contract length and payment method assumptions (e.g., monthly direct debit, on receipt of bill).
Choose your contract: you’ll receive terms and a contract summary (format varies). Read the start date, end date, renewal terms and any pass-through charges.

New supplier manages the switch: they arrange registration and confirm the live date. Your gas/electricity stays on—switching changes billing and contract, not the physical supply.
Provide opening meter reads if requested: accurate reads help avoid being billed on estimates at the handover.
Receive final bill from old supplier: check it matches the agreed end date and meter read. Keep records for VAT and accounting.
Monitor first bills: confirm rates, standing charges, VAT rate, and site/meter details are correct.

Microbusiness protections: Some additional rules can apply if you qualify as a microbusiness (for example, based on employee count and consumption thresholds). If you think you qualify, tell us—this can affect how complaints and contract information are handled.

Compare switching options (what to choose and why)

There isn’t one “best” business energy deal for every company. The right choice depends on how you use energy, your meter type, and how much budget certainty you need. Use the table below to narrow your shortlist before requesting quotes.

Option	Best for	Watch-outs	What to confirm in the quote
Fixed rate (12–36 months)	Businesses that want cost certainty for budgeting	Exit fees if you leave early; renewal windows can be strict	Unit rate, standing charge, contract start/end dates, renewal terms, pass-through charges
Flexible / variable	Firms that can tolerate price movement or expect to change premises soon	Rates can change; budgeting is harder	How/when rates change, notice periods, any minimum term
Dual fuel (gas + electricity)	Single-site SMEs wanting one supplier and aligned contract dates	Not always cheaper than separate contracts	Separate rates for gas and electricity, aligned start/end dates, billing frequency
Green tariffs / REGO-backed electricity	Firms with sustainability reporting goals	Definitions vary; check what “renewable” means in the contract	Certification/claims basis, any premium, whether it’s electricity-only or includes gas options

Decision checklist: who switching suits

You’re near contract end or within the renewal window
You’re out of contract/on variable rates and want more control
You can provide accurate usage (kWh) or recent bills
You want to align contract end dates across multiple supplies

Who it may not suit (or needs extra care)

You’re mid-contract with material exit fees
Your site has complex metering (HH, multiple MPANs, landlord supplies)
You’re moving premises very soon (ask about deemed/tenancy rates)
You have unresolved billing disputes—consider resolving first to avoid delays

Like-for-like comparison: A low unit rate can be offset by a high standing charge (and vice versa). Ask for the estimated annual cost using your kWh and the quoted standing charge—then compare that total.

Costs, exclusions and common pitfalls when switching

Business energy pricing and contracts can include elements that are easy to miss when you’re rushing. These are the areas we recommend checking before you agree a switch.

1) Renewal windows & rollover terms

Many contracts require notice within a set window. Missing it can mean auto-renewal or moving onto out-of-contract rates. Always confirm your termination date and required notice.

2) Exit fees & early termination

Fixed deals may include charges if you leave early (e.g., moving premises or closing). Ask how exit fees are calculated and when they apply.

3) VAT rate (5% vs 20%)

Some businesses qualify for reduced VAT on energy. Check whether quotes are shown ex VAT or inc VAT, and which VAT rate is assumed.

4) Pass-through charges

Some contracts include third-party charges (for example, network-related charges) as pass-through. Ask what’s fixed and what may vary over the contract term.

5) Meter type & data issues

If your electricity meter is half-hourly (HH) or your data is incomplete, quotes can differ significantly. Ensure MPAN/MPRN, address and meter serial match your bills.

6) Deemed / out-of-contract rates

If you move into new premises without agreeing a contract, you may be placed on deemed rates. It’s usually worth arranging a formal contract as soon as you can.

Two realistic switching scenarios (with numbers)

Scenario A: Small café switching electricity only

Assumptions (illustrative): 18,000 kWh/year electricity use, single-rate meter, comparing a current out-of-contract estimate vs a new fixed deal. Standing charge shown as p/day. Prices are examples to show the maths, not a promise.

Item	Current (example)	New fixed (example)
Unit rate	34.0p/kWh	28.0p/kWh
Standing charge	65p/day	58p/day
Estimated annual cost	(18,000×0.34)+(365×0.65)=£6,349	(18,000×0.28)+(365×0.58)=£5,251

Estimated difference: £1,098/year before VAT and any additional charges. Your actual price depends on supplier criteria, payment method, and timing.

Scenario B: Light industrial unit switching gas + electricity

Assumptions (illustrative): Electricity 55,000 kWh/year (single-rate), gas 90,000 kWh/year. Comparing two fixed quotes with different standing charges. Prices are examples to illustrate comparison.

Item	Quote 1 (example)	Quote 2 (example)
Electricity unit rate	26.5p/kWh	25.7p/kWh
Electricity standing charge	78p/day	98p/day
Gas unit rate	7.8p/kWh	8.1p/kWh
Gas standing charge	72p/day	55p/day
Estimated annual total	Elec: (55,000×0.265)+(365×0.78)=£14,863 Gas: (90,000×0.078)+(365×0.72)=£7,284 Total: £22,147	Elec: (55,000×0.257)+(365×0.98)=£14,493 Gas: (90,000×0.081)+(365×0.55)=£7,491 Total: £21,984

Even when a unit rate looks better, standing charges can shift the result. Here, Quote 2 is slightly lower overall in this example, but the gap is modest—contract terms and pass-through charges could matter more than headline rates.

These scenarios are illustrative to show how to compare quotes. They exclude Climate Change Levy (CCL) where applicable and any additional contract-specific charges. Always request an estimated annual cost based on your usage.

FAQs: switching business gas and electricity supplier (UK)

Will my business lose power or gas supply when I switch?: No—switching changes who bills you and the contract terms. The physical supply is delivered through the same networks, so your energy should stay on during the changeover.
What’s the difference between MPAN and MPRN?: An MPAN identifies your electricity supply point; an MPRN identifies your gas supply point. These are commonly shown on your bill and help suppliers locate the correct meter and tariff eligibility.
Can I switch if I’m in a fixed contract?: You can request quotes at any time, but switching away mid-contract may trigger exit fees. Many businesses line up a new contract to start at (or near) the end of the current term—always check the notice period.
What if I don’t know my annual kWh usage?: If you have a recent bill, it often shows annual consumption or enough information to estimate it. Where usage is uncertain, quotes may be less accurate—especially for half-hourly sites—so you may be asked for more billing history.
Do business energy prices vary by region?: They can. Network and distribution-related charges differ by region and can affect the overall cost. That’s why postcode and meter details matter when comparing quotes.
What counts as a microbusiness in energy?: Definitions can include employee count and annual consumption thresholds. If you think you qualify, mention it during your quote request because it can affect contract information requirements and dispute handling.
Can I switch just gas or just electricity?: Yes. Many businesses switch one fuel at a time, especially if contract end dates differ. If you want one supplier for both, ask about aligning contract start/end dates.
What is a deemed rate and why does it matter?: Deemed (or out-of-contract) rates can apply when you occupy a premises without agreeing a formal contract. They can be higher and less predictable, so it’s usually better to arrange a contract quickly if you’ve moved in recently.
How do I avoid billing issues after switching?: Take (and keep) opening meter reads on the switch date if requested, and check your first bill carefully: rates, standing charges, VAT rate, site address, and meter serial number. Raise discrepancies quickly with the supplier.

Trust, methodology and sources

Page ownership

Written by: EnergyPlus Editorial Team
Reviewed by: Energy Specialist
Last updated: March 2026

How we assess switching guidance (and limitations)

This guide is written to help UK businesses understand the switching process and compare tariffs fairly. We focus on what typically affects quotes and switch success:

Contract mechanics: end dates, notice periods, auto-renewal/rollover terms, and exit fees.
Meter realities: MPAN/MPRN accuracy, meter type (single-rate, multi-rate, smart, AMR, HH), and data quality.
Quote comparability: unit rate + standing charge, contract length, payment method assumptions, and whether VAT/levies are included.
Operational risk: likelihood of delays from incorrect site details, tenancy changes, and disputed final bills.

Limitations: Supplier pricing can change frequently and eligibility varies. We can’t guarantee availability, acceptance, or savings. Any example pricing is illustrative only.

Independent UK sources we reference

Ofgem (UK energy regulator) — guidance on the energy market and consumer protections.
Citizens Advice: energy — practical information on billing issues and complaints.
GOV.UK — business guidance and public information (including VAT-related policy pages where relevant).

Editorial integrity: We aim to explain what affects real-world business energy outcomes—especially contract terms and meter details—so you can make an informed choice before committing.

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Updated on 2 Apr 2026