E.ON Next Business: who it is, how to contact it and how to leave
A factual, independent look at E.ON Next's business arm, written for owners who already have a contract or are weighing one up. We do not rate suppliers.
E.ON Next Business is the non-household side of E.ON Next, supplying gas and electricity to small and medium-sized businesses. This page explains what we could confirm about it, how to reach it, what to look for on its paperwork, and how to leave or complain if things go wrong. It is a guide, not a review: we do not score suppliers, and Biz Energy is not affiliated with E.ON Next or paid by it.
Who E.ON Next Business is
The supplier describes its business service as help for small and medium businesses, and it runs a dedicated business section of its website separate from the home pages. The legal entity named on its site is E.ON Next Energy Limited, registered in England and Wales (company number 03782443) with a registered office in Nottingham. E.ON Next is the UK retail supply business of E.ON UK plc, which is part of the German E.ON group; it was built after E.ON bought npower, and former npower customers were moved onto it from 2021. In October 2026 E.ON also completed its purchase of OVO's retail business. The legal detail of who controls the company is on its Companies House record.
The practical point for you is the name on the contract. Bills, Principal Terms and renewal letters should show the legal supplier. Keep a copy, because that is the name you will quote if you ever complain to the Ombudsman.
What types of business it serves
The business pages are aimed at small and medium-sized firms: shops, offices, workshops, hospitality, and similar sites. Whether you fit as a "microbusiness" matters more than the marketing label, because microbusinesses get extra protections under Ofgem's rules. You count as one if you have fewer than 10 employees and turnover or balance sheet of no more than €2m, or if you use less than 100,000 kWh of electricity or less than 293,000 kWh of gas a year. Our guide to what counts as a microbusiness explains the tests and shows which protections you gain.
How to contact E.ON Next Business
These details come from E.ON Next's own business pages when we checked on 6 November 2026. Opening hours and numbers change, so confirm them on the official business contact page before you ring.
| Route | What the supplier says |
|---|---|
| Phone | 0808 501 5699, Monday to Thursday 9am to 5pm, Friday 9am to 4pm |
| hellobusiness@eonnext.com (a separate address exists for home customers, so do not use that one) | |
| Linked from the contact page; the supplier says replies come within hours, 8am to 10pm, seven days a week (not labelled as business-only) | |
| Out-of-hours meter emergencies | 0808 501 5088 after 5pm and at weekends, for prepayment or credit meters (not labelled as business-only) |
| Text relay | Put 18001 before the phone number |
The site notes Mondays are usually the busiest day for calls. If you only need a reading or a bill copy, the online account is the quicker route.
Reading its bills and renewal letters
Whoever your supplier is, a business bill breaks down the same way: a unit rate for each kWh, a daily standing charge, possible capacity or network charges, the Climate Change Levy where it applies, then VAT. Our general guide to reading a business energy bill walks through each line.
For renewals, find three things on the paperwork: the contract end date, the notice or renewal window, and the price you will be moved to if you do nothing. For a microbusiness, a supplier may only roll a fixed term over for up to 12 months and must have sent the required renewal information first. If you have missed a window, see how rollover contracts work. If you are out of contract with no deal agreed, you will be on a more expensive default rate with no termination fee for leaving.
A quick worked check: suppose your renewal quote shows 27.0p/kWh and 60p/day, and you use 20,000 kWh a year. The unit cost is 20,000 x 0.27 = £5,400. The standing charge is 365 x 0.60 = £219. That is £5,619 before CCL and VAT. At the current CCL main rate of 0.801p/kWh the levy is 20,000 x 0.00801 = £160.20, and VAT at 20% on (£5,619 + £160.20) adds £1,155.84, giving about £6,935 in total. Run your own figures through our VAT and CCL calculator and compare against the paperwork.
How to switch away from E.ON Next
There is no cooling-off period on business contracts, so check the end date before you sign anything new. A new supplier usually handles the switch for you: you give your meter point numbers, the new supplier submits the change, and your old supplier is told. Gas and electricity can be handled separately. Find the numbers on your bill; our pages on the MPAN and MPRN explain which is which. For the full process, read how to switch business energy.
If you are still in a fixed term, leaving early normally triggers the termination charges in your terms. Read how to exit a business energy contract early before you act.
How to complain, and when to go to the Ombudsman
Start with the complaints route on E.ON Next's own website (linked from its help pages) and keep a written record: date, what you asked for, who you spoke to. If you are a microbusiness or small business, you can take an unresolved complaint to the Energy Ombudsman once you hold a deadlock letter from the supplier or eight weeks have passed, and you must do so within 12 months of the deadlock letter. Our page on energy disputes and the Ombudsman covers evidence to gather.
If a broker arranged your contract, check the Principal Terms: the broker's fee should be stated there, and complaints about the broker's conduct go through the broker's own route rather than the supplier's.
Billing traps to watch for
Estimated readings
If no reading reaches the supplier, the bill is estimated. Estimates drift from reality, and the gap is repaid later in a catch-up bill. Send a reading whenever one is due and keep a photo; see how to submit a business meter reading. A smart meter removes the problem for most sites, and you can read about eligibility in whether businesses must have a smart meter.
Moving premises
If you take over a unit and do not agree a contract, you can land on a default "deemed" rate. Tell the supplier the date you moved in and send an opening reading the same day. The guide to moving premises and deemed contracts explains what applies, and who pays if the previous tenant left debt covers a common worry.
Large catch-up bills
Microbusiness suppliers generally cannot bill for energy used more than 12 months ago, unless you blocked meter access or tampered with the meter. If a bill looks far higher than usual, ask for a reading history before paying. Larger small businesses do not get that 12-month protection automatically, which is another reason to check your size band.
Paying
Direct debit is usually the easiest way to avoid late-payment charges, but check the monthly amount against real usage twice a year so a credit or debit balance does not build up. Our page on paying business energy bills covers the options.
Next steps
- Find your contract end date and write it in your diary at least 90 days earlier.
- Collect your last two bills and note the unit rate and standing charge.
- Use the official contact page above for anything account-specific.
- Compare options in our UK business energy suppliers overview.
Sources
General information only. Energy prices, rules and supplier terms change; check the latest position with your supplier, Ofgem or the Energy Ombudsman before you act.