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Published 22 March 2023

Corona Energy Review: Pros, Cons & Tariffs

Is Corona Energy the right supplier for your organisation? Read our review to find out more.

Many or all of the products and brands we review are from our partners who compensate us. This may influence which products we write about and the product we choose in our ‘promotion’. However it doesn’t influence our reviews. Our opinions are our own.

Corona Energy: at a glance

Corona Energy is an independent business energy supplier offering fixed and flexible tariffs for both gas and electricity in Great Britain.

The supplier caters to three types of customer: small businesses, larger corporate businesses, and public sector organisations. 


Corona Business Energy

  • 24/7 customer service?

Learn more about how we bring you our review.

Corona Energy pros & cons


  • It offers tariffs for different sized businesses, as well as other non-domestic energy customers.
  • It offers smart meter installation on request.


  • It doesn’t provide 24/7 customer service.
  • Corona only allows customers to pay by direct debit.

These pros and cons are based on an exclusive survey of UK business owners on what they found important when choosing an energy provider, conducted by NerdWallet in December 2022.

Corona Energy key features

Corona Energy full review

Providing business energy to around 13,000 customers – including 11,000 small and medium-sized enterprises (SMEs) – Corona Energy has been in the market for over 25 years.

Currently, it offers fixed and flexible tariffs to small businesses, corporate clients and public sector organisations. Corona Energy also gives customers the choice to opt for renewable electricity and green gas.

We’ve put together everything you need to know about Corona Energy at a glance in our table below.

Electricity contract lengthVariable
Gas contract lengthVariable
Fuel mix disclosureCoal: 7%
Natural gas: 57.4%
Nuclear: 5.4%
Renewable: 24.3%*
Other: 5.9%
(1 April 2021 to 31 March 2022)
Customer service number0800 804 8589
Payment numberN/A
Complaints number0800 804 8589
General email address[email protected]
[email protected]  
Complaints email address[email protected]
[email protected] 
Trustpilot rating4.5 stars (as of 6 February 2023)
Smart meter installationYes
Payment optionsDirect debit

*While Corona Energy offers the option of 100% renewable electricity, some of its tariffs will use electricity from non-renewable sources, while its green gas is offset. 

If you want to find out more about Corona Energy, read on for our full guide.

Corona Energy features

Below, you can find more information on the features and tariffs available with Corona Energy for businesses.

Customer service

The ability to sort out an energy problem, whenever it happens, is the most important feature business owners want from a supplier. It’s why they sent 24/7 service to the top of NerdWallet’s survey. 

Sadly, while you can access the myCorona online account management system whenever you want, Corona Energy doesn’t offer 24/7 customer service. If you do need to get in contact with Corona Energy, you can call 0800 804 8589 from 9am till 5pm, Monday to Friday. 

Meanwhile, if you want to email Corona Energy, the supplier lists a number of addresses:

As for any postal correspondence, it can be sent to:

Building 2, Level 2
Croxley Park
WD18 8YH

The supplier also has a live chat function on its website, as well as a presence on Facebook, Twitter and LinkedIn.

Business energy tariffs

In terms of the most important features business owners want from an energy supplier, NerdWallet’s survey showed that the ability to match your business needs to specific tariffs makes the top three. 

On its website, Corona Energy breaks down its offerings by business size and type: small, corporate, and public sector.

Small businesses

Small businesses can choose from fixed and flexible gas and electricity tariffs. A fixed tariff locks in your energy costs for the length of your contract. This means that, while your bill will rise and fall depending on your usage, how much you are charged per unit consumed will remain the same throughout the length of your contract.

A flexible tariff, on the other hand, may see various costs rise and fall in line with market movements. This means how much you are charged for your energy usage can vary from month to month.

Small businesses can also choose for their electricity to be 100% renewable and their gas to be ‘green’.

Corporate customers

As a Corona Energy corporate customer, you have the choice of both fixed and flexible contracts, alongside flexible supply agreements. Similarly, there is the option to ‘pass-through’ non-commodity costs and leave them variable or fix them for the length of the contract.

Corporate organisations can access Corona Energy’s specialist adviseors, as well as a dedicated account manager, to get assistance with developmenting risk management strategies.

You can also choose from Corona’s 100% renewable energy options. 

Public sector

Public sector organisations can benefit from many of the same features as Corona’s corporate customers.

This includes:

Deemed and out-of-contract rates

If you move into a new business location that is supplied by Corona Energy, and are yet to agree a contract with the provider, you will be put on a deemed rate. These are typically more expensive than standard rates, so you are encouraged to sign your own contract or switch provider as soon as possible. 

Meanwhile, if your Corona Energy contract expires or is terminated, and you do not have a new contract in place, you will be placed on an out-of-contract rate that is usually more expensive than a fixed or variable plan.

Additional fees and charges

It is important to remember that on top of your kWh usage, charged at your unit rate, you will pay:

You will also be charged for third party, non-energy costs that may vary from month to month. These can include:

» MORE: Business energy tariffs explained

Payment options

Business owners want to pay their energy bills via direct debit – it is the second most important feature they want from a supplier, according to NerdWallet’s survey.

However, also important is the ability to pay by bank transfer, credit or debit card, which came in at number four. Unfortunately, Corona Energy only offers businesses the opportunity to pay for their energy via direct debit.

Smart meters

The option to have a smart meter installed at your business premises was in the top five most important features a supplier can offer, according to NerdWallet’s survey.

As with many suppliers, you will need to register your interest in a smart meter with Corona Energy online. The supplier’s metering agent, Energy Assets, will then be in contact to arrange an appointment when installation is available in your area. 

» MORE: Smart meters for businesses

Renewable energy options

Corona Energy allows its customers to opt into renewable energy when choosing a tariff, whether that is 100% renewable electricity, green gas, or both.

Its renewable electricity is backed by Renewable Energy Guarantee of Origin (REGO) certificates, for every megawatt hour (MWh) Corona supplies. REGOs are a requirement of the Office of Gas and Electricity Markets (Ofgem), as part of the fuel mix disclosure regulations.  

The supplier’s ‘green’ gas tariff, meanwhile, uses biomethane. This is created by refining biogas, which is produced as organic matter breaks down. Corona Energy’s use of ‘green’ gas is backed by a Renewable Gas Guarantee of Origin (RGGO) certificate. For every kilowatt hour (kWh) of biomethane injected into the National Grid, a RGGO is produced detailing where, when and how it was produced.

Although REGOs and RGGOs were created in order to provide transparency over how much renewable energy a supplier uses, a stronger sign of commitment to green energy is arguably a supplier sourcing it directly from renewable generators.

Customer reviews

Corona Energy has an ‘Excellent’ Trustpilot rating of 4.5 out of 5, based on 1,010 reviews (as of 6 February 2023).

How can I switch to Corona Energy?

  1. Firstly, you will need to make sure your contract with your existing supplier is coming to an end, and that you have satisfied any notice period.
  2. Then you will need to get a quote from Corona Energy. You can either use Corona’s online form, or call the provider on 0800 804 8589. If you are a micro business, i.e. you use less than 100,000kWh of electricity or 293,000kWh of gas a year, then you can apply online.
  3. Once you have selected your tariff, you will need to review and sign your new business energy contract. 
  4. Corona Energy will then take care of the switchover, including contacting your existing supplier. 
  5. Near the date of your switch, Corona Energy will send a meter agent to take a reading, which will also be sent to your previous supplier.

» MORE: How to switch business energy provider

How to choose an Corona Energy tariff

When choosing a Corona Energy tariff, or comparing it with other suppliers, you should consider:

Moving business premises with Corona Energy 

Whether you are moving into, or out of, business premises supplied by Corona Energy, you will need to submit a change of occupancy form.

This will likely include providing the following information:

» MORE: What are MPRN and MPAN?

Review methodology

At NerdWallet Ltd UK we base our reviews on the results of surveys we conduct to understand what key product benefits are important to those who use them. Information on how and when the survey was conducted can be found here. The review is our opinion but does not constitute advice, recommendation or suitability to your financial circumstances.

About the Author

Connor Campbell

Connor is a writer and spokesperson for NerdWallet. Previously at Spreadex, his market commentary has been quoted in the likes of the BBC, The Guardian, Evening Standard, Reuters and The…

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