How do I contact Corona Energy?

Corona Energy's main customer service number is:

Customer service email:

Corona publishes customer service hours of Monday to Friday, 8:30am to 5pm on its main contact page.

If you have received an unexpected bill or need an update on your account, have your supply address, account reference and recent invoice ready when you contact the supplier.

Official contact page

How do I access myCorona?

myCorona is Corona Energy's online account service. Customers can use it to view bills and payment history, check consumption, submit meter readings and raise or track account queries.

If you need registration details, Corona says you can contact:

Official information

What happens if I move into premises supplied by Corona Energy?

If you take over business premises already supplied by Corona Energy, you should notify the supplier of the change. Corona asks for at least 30 days' notice for an incoming change of occupier and supporting evidence.

Accepted evidence can include a lease agreement, signed Deed of Surrender, solicitor's letter or appropriate Land Registry documentation.

You should also keep an opening meter reading and the date you became responsible for the premises.

Corona explains that a new occupier without an agreed contract may initially be charged on deemed rates.

Official guidance

What are Corona Energy's deemed rates?

Deemed rates can apply when a business moves into premises already supplied by Corona Energy without agreeing a new energy contract.

Corona publishes separate deemed rates for non-half-hourly electricity, half-hourly electricity and different annual gas consumption bands.

Its published rates effective from 1 September 2026 include:

These are published headline charges, not necessarily the complete amount payable. Corona says specified DUoS and TNUoS fixed charges are passed through separately for non-half-hourly electricity. Half-hourly supplies can also incur DUoS capacity charges and other network costs. The published figures exclude VAT and Climate Change Levy where applicable.

Official rates

What happens when my Corona Energy contract ends?

Corona distinguishes between deemed rates and out-of-contract rates.

Deemed rates commonly apply when a new occupier takes over premises already supplied by Corona without agreeing a contract. Out-of-contract rates can apply when a previous Corona contract expires or is terminated and the supply continues without a new agreement or supplier transfer.

Corona publishes the applicable rate schedules, but your contractual position and any additional charges still need checking.

If your contract is approaching expiry, ask for your end date, renewal options and any notice requirements in writing.

Official information

How do I submit meter readings to Corona Energy?

Corona accepts meter readings through its account services. Its published FAQs ask customers to submit:

• Gas readings no later than the 3rd of the month.
• Electricity readings no later than the 1st of the month.

Readings arriving later may not be used for that billing cycle, which can lead to an estimated bill.

Keep dated meter photographs and check that the correct readings have been recorded against the correct supply. Customers with automatic or smart meters should still check their bills if consumption appears incorrect.

Official guidance

Why is my Corona Energy bill higher than expected?

An unexpectedly high bill doesn't always mean the supplier has increased your contract's unit rate.

Possible explanations include estimated consumption, catch-up billing, changes in usage, out-of-contract rates, capacity charges, separately passed-through network costs or outstanding account balances.

Check the billing dates, MPAN or MPRN, readings, standing charges, unit rates and any additional charges.

If your account includes separate DUoS or TNUoS charges, ask Corona to explain how those charges were calculated and which contract provision applies.

If the figures are still unclear, request a written account breakdown rather than relying on a verbal estimate.

How do I complain to Corona Energy?

Start by contacting Corona's Customer Services team on 0800 804 8589 or emailing [email protected].

Explain the problem and provide supporting information. Corona says its complaints team will acknowledge complaints within 48 hours to five working days and aims to complete investigations within ten working days.

If the issue remains unresolved, Corona provides a further review process. It also publishes [email protected] for escalation.

Eligible microbusinesses and small businesses may be able to contact the Energy Ombudsman after eight weeks without resolution or where a qualifying deadlock response has been issued.

Official complaints process

Can The Best Energy Rates help with Corona Energy?

Yes. The Best Energy Rates can help businesses understand energy quotations, contract rates, renewal dates and billing questions.

If you have a Corona Energy bill that doesn't look right, we can help you review the figures and identify the questions to ask. If your contract is approaching renewal, we can also check the quotation options available to your business.

We are an independent energy consultancy, not Corona Energy. We cannot guarantee a saving or a particular outcome in a supplier dispute.

Corona Energy frequently asked questions

Official sources

• Corona Energy Contact
• Corona Energy FAQs
• Corona Energy Deemed and Out of Contract Rates
• Corona Energy Change of Tenancy
• Corona Energy Complaints

This is independent guidance from The Best Energy Rates Ltd and is not an official statement from Corona Energy. Published rates and supplier processes can change.