UK domestic energy supplier

E.ON UK

Q: How do I switch to E.ON?

Switching to E.ON takes about five working days under the new Faster Switching service, and your supply is never interrupted. Sign up online with your address, postcode and a recent meter reading. E.ON will arrange the transfer with your current supplier, including the final meter reading and the closing bill.

Q: Are there exit fees on E.ON tariffs?

Most UK fixed-term tariffs include an exit fee (typically £25-£75 per fuel) if you switch before the contract ends. You can switch without an exit fee in the last 49 days of your contract. Variable tariffs (including the default tariff capped by the Energy Price Cap) have no exit fees.

Q: How do I contact E.ON customer service?

You can reach E.ON on 0345 052 0000, Mon-Fri, 9 a.m. to 5 p.m.. For a full breakdown of phone lines (emergency, prepayment, HomeCare, bereavement, Welsh, Relay UK), see the E.ON contact page.

Founded in 2002 and headquartered in Coventry, E.ON supplies gas and electricity to UK households. Compare tariffs, customer service, complaints and ownership below.

See E.ON tariffs Contact E.ON

Founded 2002 About 3.8 million households Coventry Big Six member

Founded

2002

Years on the UK market

Customers

About 3.8 million households

Households served

About

Who is E.ON?

Registered as E.ON UK plc, E.ON uses this legal name for Ofgem licence filings, contracts and any formal communications. The trading name customers see on bills is the shorter, more recognisable form.

The company is headquartered in Coventry, where it runs its senior management, customer operations and regulatory liaison with Ofgem.

E.ON was established in 2002. A longer track record means more years operating under Ofgem rules and a wider history of customer feedback, billing systems and regulatory interactions.

E.ON is part of the E.ON SE (Germany) group, which provides shared governance, financial backing and a broader pool of expertise in trading, hedging and regulatory work.

The company is regulated by Ofgem, the UK's energy regulator, and its complaint handling falls under the Energy Ombudsman alternative dispute resolution scheme.

Who owns E.ON?

Ownership: Privately owned
Listed: Yes (parent E.ON SE listed on Frankfurt Stock Exchange)
Parent: E.ON SE (Germany)
Big Six: Yes — historic Big Six member
Holders: E.ON SE — listed on the Frankfurt Stock Exchange (DAX 40).

Current tariffs

E.ON tariffs: as of May 2026

The legacy E.ON brand has been closed to new sign-ups since 2022. The only domestic tariff still live on this licence is the Standard Variable Tariff, capped by the Ofgem Energy Price Cap. New customers are routed to E.ON Next; existing legacy-brand customers are being migrated to E.ON Next on a rolling basis. Migration is free, there is no exit fee, and customers can switch externally during the migration window at no cost. Rates below are the Q2 2026 cap level for a typical UK single-rate meter on direct debit, exc. VAT - your real rate depends on your region.

E.ON domestic and business tariff unit rates as of May 2026
Tariff	Network	Type	Unit rate	Standing	Effective
Standard Variable Tariff (legacy) The only domestic tariff still active on the legacy E.ON licence. Capped quarterly by the Ofgem Energy Price Cap. No exit fee, switch any time. There are no fixed deals on this bra... Term: No fixed term · no exit fee		Variable · legacy book	5.70 p / kWh	29.10 p/day

Open the full E.ON tariffs page

Regulator

Who regulates E.ON?

Independent watchdog responsible for licences, price approvals and customer-protection rules.

Complaints escalation (ADR): Energy Ombudsman

Timeline

E.ON — key dates

A short timeline of the E.ON brand — founding, milestones, regulatory events.

2000
E.ON SE is created through the merger of two German energy companies — VEBA and VIAG.
2002
E.ON enters the UK by acquiring Powergen, previously government-owned.
2003
E.ON enters the gas market through the acquisition of Ruhrgas.
2014
Ofgem orders E.ON to pay 330,000 customers £12 million over mis-selling — the largest such penalty against a UK supplier at the time.
2016
E.ON announces it will exit fossil-fuel generation; transfers fossil businesses to Uniper (sold off in 2017).
2018
E.ON acquires renewable utility Innogy in a €43 billion asset swap with RWE.
2019
E.ON absorbs Npower's domestic retail division and announces the launch of E.ON Next.
2022
Migration to E.ON Next is well under way; the legacy E.ON brand stops accepting new customers.

Save up to £300 per year

Independent comparison

Is E.ON the cheapest option for your home?

UK households can save up to £300 per year by switching to a supplier whose tariffs fit their actual gas + electricity usage. Compare against suppliers regulated by Ofgem in under two minutes.

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Common questions

E.ON — frequently asked questions

E.ON is regulated by Ofgem and operates under a standard domestic-supply licence. Whether it is the right supplier for your household depends on your unit rate, standing charge, customer-service rating and any add-on services (HomeCare, Warm Home Discount eligibility). Always quote your annual kWh consumption when comparing prices — the headline rate alone does not predict your bill.

Switching to E.ON takes about five working days under the new Faster Switching service, and your supply is never interrupted. Sign up online with your address, postcode and a recent meter reading. E.ON will arrange the transfer with your current supplier, including the final meter reading and the closing bill.

The UK grid is supplied by a mix of gas, nuclear, wind, solar, biomass and imports. E.ON declares its fuel mix annually under Ofgem rules — see the fuel-mix section above for the current figures. Some tariffs are sold as 'green' or '100% renewable', which means the supplier matches your annual consumption with renewable electricity certificates (REGOs) rather than physically delivering renewable electrons to your home.

Most UK fixed-term tariffs include an exit fee (typically £25-£75 per fuel) if you switch before the contract ends. You can switch without an exit fee in the last 49 days of your contract. Variable tariffs (including the default tariff capped by the Energy Price Cap) have no exit fees.

You can reach E.ON on 0345 052 0000, Mon-Fri, 9 a.m. to 5 p.m.. For a full breakdown of phone lines (emergency, prepayment, HomeCare, bereavement, Welsh, Relay UK), see the E.ON contact page.

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E.ON UK

Who is E.ON?

E.ON tariffs: as of May 2026

Who regulates E.ON?

E.ON — key dates

Is E.ON the cheapest option for your home?

E.ON — frequently asked questions

Is E.ON a good energy supplier?

How do I switch to E.ON?

Does E.ON offer 100% renewable electricity?

Are there exit fees on E.ON tariffs?

How do I contact E.ON customer service?

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