Why has my business energy switch been blocked? Supplier objections, debt and how to fix it

A business energy switch can be blocked when the existing supplier raises a formal objection, the new supplier rejects the application or incorrect supply information prevents the registration from completing.

The most common causes include:

• An unpaid balance with the existing supplier
• A fixed contract that has not ended
• An incorrect proposed supply start date
• Termination notice not being received or accepted
• An incomplete change of tenancy
• The wrong MPAN or MPRN
• A credit-check failure
• A meter the new supplier cannot support
• A mismatch between the customer, address and industry records

The first step is to establish exactly where the switch failed. A formal objection from your current supplier requires a different solution from a credit rejection or incorrect meter number.

Once the problem has been corrected, the new supplier will usually need to submit the switch again.

If your existing contract is ending and you are ready to obtain alternative prices, you can compare prices for business energy tariffs.

Why business energy switches get blocked

There are three main stages at which a commercial energy switch can fail.

Failure point	What has happened	Who normally controls the next step?
New supplier rejects the application	The contract has not passed the supplier’s credit, eligibility or data checks	New supplier
Existing supplier objects	The losing supplier has formally objected to the transfer	Existing supplier
Registration fails	The meter, address or industry data does not pass the switching system’s checks	New supplier, existing supplier or industry data service

Businesses are not always told which type of failure occurred. A broker or supplier might simply say that the switch was “blocked”, “rejected” or “cancelled”.

Ask for the exact status and reason before paying a balance, signing another agreement or changing the proposed start date.

What is a supplier objection?

A supplier objection is a formal request from the existing supplier to prevent an electricity or gas supply from transferring to another company.

According to Ofgem’s decision on domestic and non-domestic objections, a non-domestic supplier can object where the contract contains a provision allowing it to do so. The most common grounds are an unexpired fixed term and outstanding debt.

This means a supplier cannot necessarily object for any reason it chooses. The basis should come from:

• The energy contract
• The account balance
• The proposed transfer date
• The customer’s circumstances
• The supplier’s industry records

The outgoing supplier normally has a short window in which to object after receiving the registration request. Under the faster switching arrangements, this is generally two working days.

If the supplier objects, the registration will normally be cancelled rather than held open indefinitely. Once the problem is resolved, the gaining supplier will usually have to submit a fresh request.

How to identify what blocked your switch

Ask the new supplier or broker the following questions:

1. Was a formal objection raised by the current supplier?
2. Which MPAN or MPRN was affected?
3. What objection reason or registration message was received?
4. On what date was the switch submitted?
5. What supply start date was requested?
6. Was the application rejected before registration?
7. Does the supplier need to submit a new registration?
8. Is the agreed contract still valid?
9. Has the price or proposed start date changed?

The answer should help you match the problem to one of the following situations.

Message received	Likely meaning	First action
“Objection raised”	Existing supplier stopped the transfer	Contact the existing supplier
“Debt objection”	Existing supplier says money is overdue	Request an itemised statement
“Contract objection”	Proposed date is before the permitted end date	Check the contract and start date
“Change of tenancy rejected”	Supplier has not accepted the new occupier	Submit occupancy evidence
“Credit rejected”	New supplier will not accept the customer on the proposed terms	Discuss deposit, payment or another tariff
“Invalid MPAN/MPRN”	Wrong or incomplete supply number	Verify it against the meter and bill
“Unsupported meter”	New supplier cannot serve the meter configuration	Find a compatible supplier or arrange metering work
“Erroneous transfer”	The wrong supply may have been switched	Contact both suppliers immediately
“Registration failed”	Industry records do not match the application	Ask which data field failed
“Switch cancelled”	The original registration is no longer active	Resolve the cause and arrange resubmission

Do not assume that paying an invoice will solve every blocked switch. It will not correct an invalid meter number, an overlapping contract or a rejected change of tenancy.

Can debt stop a business energy switch?

Debt can stop a business energy switch when the existing contract permits the supplier to object because money is overdue.

Unlike the rules sometimes quoted for domestic customers, there is no single universal debt amount or 28-day rule that applies to every business energy contract.

The outcome can depend on:

• The wording of the contract
• Whether the invoice is overdue
• Whether the balance is genuinely owed
• Whether the account is in dispute
• Whether a payment arrangement exists
• Whether the supplier has agreed to withdraw the objection
• The legal identity of the customer

Do not rely on domestic switching rules, such as the rules concerning certain prepayment-meter debts, when dealing with an ordinary commercial credit account.

What to do about a debt objection

Ask the existing supplier for:

• An itemised account statement
• Copies of the relevant invoices
• The date each amount became due
• The meter readings used
• Details of payments and credits
• The contractual clause permitting an objection
• The exact amount required to remove the objection
• Written confirmation when the account is cleared

Compare the statement with your bank records and previous bills. Our guide to understanding a business energy bill explains the main charges and supply details to check.

If the balance is correct, the quickest solutions may be to:

• Pay it in full
• Agree a payment arrangement
• Correct a failed Direct Debit
• Provide missing remittance information
• Ask for an unallocated payment to be traced
• Replace a security deposit where the contract requires one

A payment plan does not automatically guarantee that the supplier will withdraw its objection. Ask for written confirmation of whether the proposed arrangement will allow the switch to proceed.

What if the debt is disputed?

Explain in writing:

• Which invoices you dispute
• The amount in dispute
• Why you believe it is wrong
• Which meter readings support your position
• What amount you accept as payable
• What you have already paid
• What resolution you are requesting

Paying an undisputed amount can demonstrate that the business is not simply avoiding payment, although it does not force the supplier to lift an objection.

Billing disputes commonly involve:

• Estimated readings
• Incorrect opening or closing readings
• The wrong unit rate
• An incorrect standing charge
• Payments allocated to another account
• Duplicate invoices
• Charges for the wrong meter
• Charges from before the business occupied the property
• Back-billed consumption

If older charges have appeared unexpectedly, read our guide to business energy back-billing.

Ofgem’s good-practice guidance for non-domestic debt management encourages suppliers to communicate transparently and support customers experiencing payment difficulty. However, this guidance does not replace the terms of the contract.

Can an active contract block the switch?

A supplier may object when the proposed transfer date falls before the current contract’s permitted end date.

This can happen even when you are allowed to arrange the next contract in advance. Signing a future contract does not necessarily allow the physical supply to transfer immediately.

Check all of the following dates:

Date	Why it matters
Contract acceptance date	When the existing agreement was formed
Supply start date	When the existing tariff began
Contract end date	Last day of the fixed term
Notice deadline	Date by which termination must be submitted
Proposed new supply date	Date requested by the gaining supplier
Renewal or switching window	Period during which a future contract can be arranged

For example, suppose the existing contract ends on 30 September but the new supplier submits 16 September as the proposed start date. The existing supplier may object because the proposed date overlaps the fixed term.

The usual solution is to agree a corrected start date and ask the gaining supplier to submit the registration again.

Our guides to business energy contract renewal and business energy contract length explain the dates and terms businesses should check.

Does giving termination notice prevent an objection?

Not necessarily.

Termination notice tells the supplier that you do not want the contract to continue beyond the permitted date. It does not normally create a right to leave before that date.

A switch can still be blocked if:

• The proposed start date is too early
• Notice was sent to the wrong address
• The supplier says it did not receive the notice
• The notice did not identify the correct account or meter
• The person giving notice was not authorised
• The contract required a particular notice method
• The supplier’s recorded end date differs from yours

Keep the email, delivery receipt, supplier reference number and any written confirmation that notice was accepted.

If a broker submitted the notice, ask for the original message rather than relying only on an assurance that it was sent.

Does a failed switch cancel the new contract?

Do not assume that it does.

Business energy agreements can become binding before the supply transfers, and most commercial contracts do not have the automatic 14-day cooling-off period associated with domestic energy contracts.

A failed registration might lead to:

• A revised start date
• A replacement registration
• Repricing
• Cancellation under a contractual condition
• The contract remaining in force until the switch can complete

Ask the new supplier for its position in writing before signing a second contract. Otherwise, the business could accidentally accept competing agreements for the same supply.

Read our guide to getting out of a business energy contract before attempting to cancel a signed agreement.

Change-of-tenancy objections

A switch may be blocked after a business moves into new premises because the existing supplier has not yet accepted the change of occupier.

The supplier’s records might still show:

• The former tenant
• The landlord
• A previous company
• A dissolved business
• An incorrect responsibility date
• An unresolved account closure

Notify the incumbent supplier as soon as possible, even if you intend to switch to a different company.

Under Ofgem’s change-of-tenancy guidance for businesses, a supplier should normally review the evidence within 10 working days. It should then accept the change, reject it with a reason or explain what additional information is needed.

Evidence for a change of tenancy

Useful evidence can include:

Evidence	What it helps establish
Signed lease or tenancy agreement	Start date and responsible legal entity
Property completion statement	Date ownership changed
Title deeds	Property ownership
Business-rates document	Occupation of the premises
Landlord’s letter	Identity and date of the new tenant
Solicitor’s letter	Completion or legal responsibility
Bank or insurance documents	Trading identity and premises
Dated meter photographs	Opening reading and meter serial number
Companies House information	Correct company name and number

Provide the full document where necessary, but redact unrelated personal or financial information where appropriate.

The supplier may need additional evidence where:

• The old and new companies have similar names
• The directors are connected
• The business was transferred as a going concern
• The lease was backdated
• Several units share an address
• The landlord disputes the occupancy date

Can the previous tenant’s debt block you?

A genuinely separate new occupier should not be made responsible for energy used by the previous tenant.

If the supplier links the old debt to your new account:

1. State the new business’s full legal name.
2. Provide its company number.
3. Confirm the date responsibility began.
4. Supply the lease or completion evidence.
5. Provide an opening meter reading.
6. Ask for the previous account to be separated.
7. Request the objection reason in writing.

The position can be more complicated if the same legal entity remained responsible or the transaction involved connected companies. Obtain legal advice where ownership or contractual liability is disputed.

Our guide to setting up business energy when moving premises provides a complete change-of-tenancy checklist.

Incorrect MPAN, MPRN or meter details

A switch can fail because the quotation or registration contains the wrong supply point.

Electricity supplies are identified by an MPAN. Gas supplies are identified by an MPRN. These numbers identify the supply point rather than the customer or physical meter.

Common mistakes include:

• Using a meter serial number instead of the MPAN or MPRN
• Providing an export MPAN instead of the import MPAN
• Omitting one supply from a multi-meter site
• Selecting the neighbouring unit’s meter
• Using an old bill from another property
• Entering the wrong postcode
• Confusing gas and electricity references
• Using an MPAN associated with a landlord’s communal area
• Failing to include all related electricity meters
• Providing data for a disconnected supply

You can find the relevant numbers using our guides to locating an MPAN and MPRN.

Verify the meter before resubmission

Check the following information against the meter, a recent bill and the property:

• MPAN or MPRN
• Meter serial number
• Full supply address
• Unit or plot number
• Current supplier
• Meter type
• Import or export status
• Electricity or gas
• Opening meter reading

Take a photograph showing the meter serial number and reading. This is particularly important where a building contains several businesses or meters.

Switching the wrong supply can cause an erroneous transfer, incorrect bills and disputes between occupiers.

Credit-check and application rejections

A new supplier can reject an application before the formal switch is submitted.

This is not the same as an objection from the existing supplier.

The new supplier may consider:

• Company credit history
• Previous supplier debt
• Trading history
• Company age
• Insolvency records
• Director information
• Expected annual consumption
• Contract value
• Payment method
• Security-deposit requirements
• Whether the business operates in a higher-risk sector

Possible solutions include:

• Paying a security deposit
• Agreeing Direct Debit payments
• Supplying recent accounts
• Providing a parent-company guarantee
• Choosing a shorter contract
• Selecting another tariff
• Applying to a supplier with different acceptance criteria

A rejected application does not mean every supplier will make the same decision. Commercial credit policies and deposit requirements vary.

Before making another application, confirm whether the first agreement became binding and whether repeated credit searches will be carried out.

Unsupported meters and complex supplies

Some suppliers cannot accept every commercial meter configuration.

An application may be rejected because the supply has:

• Half-hourly metering
• A complex multi-rate meter
• A prepayment arrangement
• Related or paired MPANs
• An unmetered supply
• A disconnected meter
• An export arrangement
• Specialist data-collection requirements
• An independent network connection
• A meter profile outside the supplier’s target market

This is normally an eligibility or registration issue rather than an objection from the current supplier.

The solution might involve:

• Selecting a compatible supplier
• Correcting the recorded meter type
• Arranging a meter exchange
• Appointing a Meter Operator
• Updating data-collection arrangements
• Registering all related MPANs together

Businesses with more complex electricity arrangements can read our guides to half-hourly meters and Meter Operator contracts.

Do not arrange an unnecessary meter exchange until the supplier has confirmed exactly why the existing meter cannot be supported.

Incorrect business details

The switch application should identify the legal customer accurately.

Problems can arise where:

• A trading name is used instead of the registered company
• The company number is wrong
• The old legal entity is still shown
• A sole trader is entered as a limited company
• The billing and supply addresses are confused
• The authorised signatory’s details do not match
• A Direct Debit account belongs to another company
• The quotation and signed contract contain different names

Correcting the details may require an amended contract rather than a simple data update.

This is especially important after:

• Incorporating a sole-trader business
• Buying another company’s assets
• Changing a partnership
• Restructuring a group
• Opening a new subsidiary
• Moving premises

Can a landlord prevent the switch?

A tenant may be unable to choose a supplier where the landlord holds the energy contract and resells electricity or gas to the occupiers.

Check:

• The lease
• Service-charge provisions
• Whether the unit has its own MPAN or MPRN
• Whose name appears on the supplier bill
• Whether the tenant pays the supplier directly
• Whether the landlord controls a head meter

Having a visible sub-meter does not necessarily mean the unit has an independently switchable supply.

If your business contracts directly with the energy supplier for its own MPAN or MPRN, the landlord would not normally control the supplier switch merely because it owns the property. However, lease conditions and responsibility for metering work can still be relevant.

Why only one fuel may switch

Business gas and electricity are separate supplies with separate contracts, identifiers and registrations.

One fuel may switch while the other is blocked because:

• The contract dates are different
• Only one account has debt
• The gas and electricity suppliers are different
• An incorrect MPRN was provided
• One meter is unsupported
• The change of tenancy was accepted for only one supply
• The registration requests were submitted on different dates

Do not assume that a dual-fuel quotation means both transfers will always complete together.

Read more about using separate gas and electricity suppliers.

Multi-site switch objections

Each MPAN and MPRN in a multi-site portfolio can have a different status.

For example, a company switching 20 electricity supplies might find that:

• 16 transfer successfully
• Two are blocked by debt
• One has an incorrect MPAN
• One remains in a fixed contract

Whether the successful supplies proceed depends on how the new agreement was structured. A grouped contract may contain conditions concerning the entire portfolio, while individually priced supplies might proceed separately.

Create a supply schedule containing:

Information	Why record it?
Site name and address	Identifies the premises
MPAN or MPRN	Identifies the supply
Existing supplier	Shows who can object
Contract end date	Prevents early registrations
Outstanding balance	Identifies possible debt objections
Termination status	Confirms whether notice was accepted
New supplier	Shows who must resubmit
Proposed start date	Reveals overlaps
Registration status	Tracks each transfer
Meter reading	Supports final and opening bills

See our complete guide to multi-site business energy contracts.

How long does resolving an objection take?

The time depends on the cause.

Cause	Possible resolution time
Simple unpaid invoice	Potentially a few working days after cleared payment
Incorrect proposed start date	A few days to correct and resubmit
Missing termination notice	Depends on the contract and available evidence
Change of tenancy	Supplier review should normally occur within 10 working days
Wrong MPAN or MPRN	A few days if the correct number is readily available
Industry data error	Several days or weeks
Meter exchange	Potentially several weeks
Complex billing dispute	Several weeks or longer
Formal complaint	Up to eight weeks before Ombudsman escalation, unless deadlock is issued sooner

These are practical indications rather than guaranteed deadlines.

A new registration may still need to pass through the normal switching process after the underlying problem has been corrected.

How much can a delayed switch cost?

The old supplier continues supplying energy until the transfer completes. There should not normally be an interruption solely because the switch failed.

However, the business may remain on:

• Out-of-contract rates
• Deemed rates
• A variable tariff
• An expired-contract tariff
• The existing fixed contract

You can estimate the additional cost of the delay using:

Additional cost = daily consumption × unit-rate difference × delayed days

Suppose a business uses 200 kWh of electricity per day:

• Current out-of-contract rate: 38p per kWh
• New contract rate: 24p per kWh
• Difference: 14p per kWh
• Delay: 14 days

The illustrative additional unit cost would be:

200 kWh × £0.14 × 14 days = £392

Any difference in standing charges would need to be added.

The actual loss may also depend on whether the new supplier honours the original rate. A failed or delayed registration does not automatically entitle the business to compensation.

How to fix a blocked business energy switch

Use the following process.

1. Identify the affected supply

Obtain the MPAN or MPRN, account number, property address and meter serial number.

2. Establish where the failure occurred

Ask whether it was:

• A losing-supplier objection
• A new-supplier rejection
• A registration failure
• A change-of-tenancy problem
• An erroneous transfer

3. Request the precise reason

Do not accept a vague explanation such as “the current supplier would not release the supply”.

Ask for the objection code, registration message or written reason.

4. Check the contract

Confirm:

• End date
• Notice period
• Termination requirements
• Debt-objection clause
• Proposed new start date
• Early-termination provisions

5. Reconcile the account

Check invoices, payments, credits, meter readings and disputed charges.

6. Correct the underlying problem

This might mean paying a balance, changing the start date, submitting tenancy evidence or correcting a supply number.

7. Obtain written confirmation

Ask the responsible supplier to confirm that the objection has been removed or that the issue has been corrected.

8. Ask the new supplier to resubmit

A resolved objection does not necessarily restart the transfer automatically. Obtain a new registration date and reference number.

9. Confirm the contract terms

Check that the price, duration, standing charge and payment method remain as agreed.

10. Monitor both accounts

Confirm that the old supplier produces a final bill and the new supplier opens the correct account.

11. Submit an opening reading

Provide a dated reading around the transfer date and retain a photograph.

Email template for challenging an objection

Subject: Request for business energy switch objection details

Account number: [account number]
Supply address: [address]
MPAN/MPRN: [supply number]
Proposed transfer date: [date]

I have been informed that an objection has been raised against the transfer of this supply.

Please confirm:

1. The precise reason for the objection
2. The contractual clause or account information relied upon
3. Any amount you believe is overdue
4. The contract end date held on your system
5. Whether termination notice has been received
6. The action required to remove the objection
7. When the objection will be withdrawn after that action is completed

If the objection relates to a disputed invoice or change of tenancy, please treat this message as a formal request for review and provide the evidence supporting your decision.

Please confirm your response in writing.

Keep the response, complaint reference and copies of every supporting document.

What if the objection is wrong?

Write to the existing supplier and clearly label the message as a formal complaint.

Include:

• The affected account and supply number
• The date the switch was submitted
• The reason you were given
• Why the reason is incorrect
• Contract and termination evidence
• Payment evidence
• Change-of-tenancy documents
• The resolution you require
• Details of any demonstrable financial loss

Possible requested remedies include:

• Immediate withdrawal of the objection
• Correction of the account or contract date
• Confirmation to the gaining supplier
• Reimbursement of avoidable additional charges
• A written apology
• Compensation for poor service

Compensation is not automatic. Business customers generally do not receive the same automatic switching-delay payments that may apply under domestic guaranteed standards.

If the supplier does not resolve the complaint, eligible businesses can normally approach the Energy Ombudsman after receiving a deadlock letter or after eight weeks have passed.

Since December 2024, the Ombudsman’s non-domestic eligibility has included more small businesses as well as microbusinesses. Check the current criteria on the Energy Ombudsman’s small-business guidance.

Ofgem does not normally resolve individual billing or contract complaints. Its energy complaint guidance explains the general escalation route.

Larger organisations outside the Ombudsman’s eligibility may need independent legal advice or a civil claim.

What if a broker caused the problem?

A broker might have:

• Submitted the wrong start date
• Used an incorrect MPAN or MPRN
• Failed to send termination notice
• Entered the wrong company details
• Failed to pass information to the supplier
• Signed the business up to an unsuitable supplier
• Misunderstood the existing contract end date

Ask the broker for:

• The signed contract
• The quotation
• The letter of authority
• The termination notice
• Evidence of delivery
• All supplier registration messages
• The proposed supply start date
• The broker’s complaint procedure

A letter of authority may allow a broker to obtain information or communicate with suppliers, but it does not necessarily give permission to sign contracts. Check the exact wording.

A complaint against the broker does not automatically resolve the supplier registration. Continue dealing with both suppliers while the broker complaint is investigated.

Frequently asked questions

Compare business energy prices

A blocked switch does not necessarily mean your business has to remain with its current supplier permanently.

Once the debt, contract, tenancy or supply-data problem has been corrected, you can normally arrange a new transfer. Before accepting another agreement, confirm:

• The correct MPAN or MPRN
• Your current contract end date
• Whether termination notice has been accepted
• The proposed new supply date
• Whether the account has an overdue balance
• Whether the new supplier supports your meter
• The legal customer name
• The full unit rate and standing charge
• Contract length and payment terms
• Any broker commission or fees

EnergyCosts.co.uk can help eligible UK businesses compare prices for business energy tariffs from alternative suppliers.

Information and official guidance last reviewed on 12 August 2026. Contract terms and supplier procedures vary, so obtain confirmation for your individual account.