Engie business energy: a neutral guide

Who is Engie in the UK business market?

Engie's UK business supply arm trades as ENGIE and supplies gas and electricity to non-domestic customers. The licensed company behind it is ENGIE Power Limited (company number 04236804). Companies House lists one person with significant control: Engie Supply Holding UK Limited, which holds 75% or more of the shares.

The group is French-owned, but the group itself is not what you sign a contract with. Always check the company name on your own contract, because that is the legal party responsible for your supply and your bills.

Engie used to sell to households too. In January 2020 it agreed to hand roughly 70,000 UK residential customers to Octopus Energy, and said it was keeping its business customer portfolio. So if you see old articles about Engie leaving the home market, that does not mean it left business energy.

What kinds of business does it serve?

On its own site Engie says it targets small and medium-sized businesses, and it describes simple fixed contracts for gas and electricity, an option for 100% renewable electricity, an online account, smart or automatic meter-reading upgrade requests and moving-in and moving-out forms. Engie also says it is not listed on comparison sites and encourages customers to ask it for a quote directly. Treat that as the supplier's own statement: it is worth getting a direct quote, but it does not tell you the price will be lower than a quote you get elsewhere.

Whether you count as a microbusiness matters, because it decides which protections you get. Under Ofgem's tests you are a microbusiness if you have fewer than 10 employees and turnover or balance sheet of no more than about 2 million euros, or you use under 100,000 kWh of electricity a year, or under 293,000 kWh of gas. See what is a microbusiness for energy for the full test.

How to contact Engie

Use the contact pages on Engie's own website rather than a number from a third-party listing. The company's contact page covers account queries and change of tenancy (moving in or out). Its SME page lists a sales line, 0333 666 0276, open Monday to Thursday 9am to 5pm and Friday 8.30am to 4.30pm when we checked in November 2026. Opening hours change, so confirm them on the site.

Whichever route you use, keep a note of the date, the name of the person and any reference number. If a dispute develops later, a clear paper trail is the most useful thing you can have.

Reading Engie bills and renewal letters

We do not reproduce Engie's own bill layout here, but every supplier's bill follows the same logic. Look for:

• The meter point numbers (MPAN for electricity, MPRN for gas), so you know which site the bill covers. See how to find your MPAN and MPRN.
• Whether readings are actual or estimated. Estimates can drift a long way from reality. See estimated business energy bills.
• Unit rate and daily standing charge, then the Climate Change Levy and VAT lines.
• The contract end date and what happens next.

Engie's SME page says you can renew at any time and that, when your current contract ends, it will move you onto a new one without you needing to act. That is common across the industry, but it means a missed deadline can lock you into a new term. Ofgem's rules limit rollovers to 12 months or less and suppliers must give proper renewal information first, but you should not rely on that. Put the end date in your diary and check how rollover contracts work.

Tip: Ask for the renewal quote in writing and check it against at least one other quote. A renewal price that is higher than the market is not a mistake, it is how out-of-date contracts are priced.

How to switch away from Engie

Your options depend on where you are in your contract.

1. Inside a fixed term: you are usually bound until the end date, and leaving early may mean an exit fee. Check the termination clause. See exiting a business energy contract early.
2. Near the end date: read the renewal letter and your contract for the date by which you must give notice if you want to leave rather than roll onto a new term, and give that notice in writing.
3. Out of contract: there is no termination fee for leaving, and microbusinesses cannot be forced to give notice (except under an evergreen contract, where up to 30 days can be required).

Any new supplier handles the switch. Ofgem also says a supplier may object if you owe it money, so clear or agree a plan for any arrears first. The general process is in how to switch business energy supplier.

How to complain and escalate

Engie's complaints page says you can email complaints.customerservice.uk@engie.com or call 0800 130 3600. It aims to resolve things on first contact; otherwise you get a reference number and updates. If you cannot agree, Engie issues a final-offer letter known as a deadlock letter.

You can then take the complaint to the Energy Ombudsman, which is free and independent, if you hold a deadlock letter or the complaint is unresolved after 8 weeks. You must go to the Ombudsman within 12 months of the deadlock letter. The Ombudsman covers microbusinesses and small businesses; a business is small if it has fewer than 50 employees and turnover up to £6.5m or balance sheet up to £5m, or uses up to 200,000 kWh of electricity or 500,000 kWh of gas a year. More in energy disputes and the Ombudsman.

If your complaint is about a broker, use the broker's complaints process first, then the Ombudsman's broker scheme after eight weeks.

Next steps

• Find your contract end date and write it down: how to find it.
• Gather your annual usage and MPAN or MPRN, then get at least two quotes: what you need for quotes.
• Estimate the cost with our business energy cost calculator.

Biz Energy is independent and is not affiliated with Engie. We take no commission and this page is not an endorsement or a recommendation.