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UK business energy supplier

Corona Energy business

Founded in 1995 and headquartered in Watford, Corona Energy supplies gas and electricity to UK businesses. Compare tariffs, contract terms, customer service and complaints below.

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Founded 1995 About 10,000+ SMEs (plus corporate and public-sector portfolios) Watford B2B specialist

Founded

1995

Years supplying UK businesses

Customers

About 10,000+ SMEs (plus corporate and public-sector portfolios)

Business sites served

Fuels

Gas, electricity and dual fuel

Energy types offered

Business sizes

Small business (SMEs), corporate multi-site, public sector, partners (brokers and consultants). Roughly 75% microbusiness/SME, 25% Industrial & Commercial.

Customer segments served

About

Who is Corona Energy?

Founded in 1995 and acquired by the Australian financial group Macquarie in 2006, Corona Energy is one of the UK's established mid-market business energy suppliers. It supplies gas, electricity and dual-fuel offers to 10,000+ SMEs alongside corporate and public-sector multi-site portfolios, with fixes up to 36 months and a 100% renewable electricity option.

Registered as Corona Energy Retail 4 Ltd, Corona Energy uses this legal name for Ofgem licence filings, B2B contracts and any formal communications. The trading name customers see on invoices is the shorter, recognisable form.

The company is headquartered in Watford, where it runs its commercial operations, account management and regulatory liaison with Ofgem.

Corona Energy was established in 1995. A longer track record means more years operating under Ofgem rules and a wider history of business-customer relationships.

Corona Energy is part of the Macquarie Group (Australia) group, which provides shared governance, financial backing and a wider pool of expertise in wholesale trading, hedging and regulatory work.

The company is regulated by Ofgem, and complaints fall under the Energy Ombudsman alternative dispute resolution scheme,but only for microbusinesses with under 10 staff and under £2m turnover. Larger I&C customers must take complaints through commercial dispute resolution.

Contracts

Corona tariff types

Business energy is priced bespoke to your annual consumption and contract term. The headline contract shapes below are the ones you will see on a Corona Energy quote.

Up to 36 months

Fixed-rate tariffs

  • Unit rate and standing charge locked
  • Best for budget certainty
  • Useful where you expect the wholesale market to move against you

Variable

Flexible tariffs

  • Variable unit rate customised to consumption profile
  • Better suited to multi-site I&C customers
  • Lets you react to wholesale moves

Add-on

100% renewable electricity

  • Available across both fixed and flexible products
  • REGO-certified
  • Useful for businesses serious about going green

Variable

Deemed / out-of-contract

  • Applied when moving into a Corona-supplied property without a contract
  • Or when an existing contract expires without renewal
  • Rates always more expensive than negotiated contracts
  • Can change without notice

Review

Corona Energy,pros and cons

A mid-market specialist with strong sales — and a billing-accuracy reputation problem. Sales-led, Macquarie-backed and credible at the mid-market end. The myCorona portal is solid, the tariff structure is straightforward and the green-electricity option is genuine. The recurring criticism in public reviews — billing accuracy and contact-by-mistake invoicing — is real and worth weighting before signing. Selectra score 2.5 / 5.

Strengths

  • Established, Macquarie-owned mid-market supplier — financial stability behind the brand.
  • 100% renewable electricity available across the product range, not just on premium tariffs.
  • Fixes available up to 36 months, useful for budget certainty on multi-year planning.
  • myCorona portal handles meter reads, billing history, consumption and case tracking.

Watch-outs

  • Public-review profile is poor: Trustpilot 2.2 / 5 and Google 1.8 / 5.
  • Recurring complaints about inaccurate invoices despite timely meter reads.
  • Multiple non-customer reports of receiving bills and threatening letters from Corona by mistake.
  • No published price list — every quote is bespoke and must be benchmarked against alternatives.

Renewables

Corona Energy green credentials

100%-renewable electricity add-on certified by REGO. Available across both fixed-rate and flexible products — not restricted to premium tariffs.

Renewable electricity 100%

Timeline

Corona Energy: key dates

A short timeline of Corona Energy: founding, milestones, regulatory events.

  1. 1995

    Corona Energy founded as an independent UK business energy supplier.

  2. 2006

    Acquired by the Australian financial group Macquarie; continues to operate under that ownership today.

Save up to £600 per year
Independent comparison

Is Corona the cheapest option for your business?

UK businesses can save up to £600 per year by switching to a supplier whose contract shape fits their actual usage profile. Get a free, no-obligation quote from a Selectra B2B broker in under two minutes.

Get a free business quote

Common questions

Corona Energy,frequently asked questions

Corona Energy is regulated by Ofgem under a non-domestic supply licence. Whether it suits your business depends on your annual consumption, contract term and whether you need extra services (HHM, green certification, smart-meter rollout). Always compare delivered p/kWh including VAT and CCL before signing.

Switching takes between three weeks and two months for a business contract, longer than the domestic five-working-day rule. Corona Energy will run a credit check, request your annual consumption and a recent meter reading, and arrange the transfer with your current supplier. Supply is never interrupted during the switch.

Fixed-rate tariffs up to 36 months; flexible/variable tariffs; 100% renewable electricity add-on; deemed / out-of-contract

Most UK fixed-term business contracts include termination fees if you switch mid-contract. The supplier must accept your renewal notice in the final 30 to 60 days before the contract end-date (the renewal window varies by supplier and is set out in the original contract). Outside that window you are tied in unless you pay the exit charge.

You can reach Corona Energy on 0800 804 8589, Mon-Fri 9am-5pm. Freephone.. For a full breakdown of phone lines (sales, emergency, complaints, meter readings, account moves), see the Corona Energy contact page.

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