Private company

E.ON UK

Logo: Unknown author Unknown author (E.ON), Public domain, via Wikimedia Commons4

Energy company in the United Kingdom

E.ON UK is a British energy company and one of the largest suppliers of energy in the UK, following its acquisition of Npower. It is a subsidiary of E.ON of Germany and one of the Big Six energy suppliers. It was founded in 1989 as Powergen, and was listed on the London Stock Exchange and was once a constituent of the FTSE 100 Index.2 It is headquartered in Coventry.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1990Founded1
  • Industryenergy industry1
  • HeadquartersCoventry1
  • Websitewww.eonenergy.com
  • Legal formS.A.1
  • LEI54930033NVZ42A64JU253
  • StatusActive3
  • LEI statusIssued and current3
  • Registered addressWestwood Way, CV4 8LG Coventry, United Kingdom3
  • Registered withCompanies House, 023669703

E.ON UK is a British energy company and one of the largest suppliers of energy in the UK, following its acquisition of Npower. It is a subsidiary of E.ON of Germany and one of the Big Six energy suppliers. It was founded in 1989 as Powergen, and was listed on the London Stock Exchange and was once a constituent of the FTSE 100 Index. It has been a subsidiary of E.ON since 1 July 2002.2

Corporate structure

E.ON UK is part of a group headed by E.ON. 201 entities, 22 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

What it owns

What E.ON UK reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Stakes and holdings (Wikidata)

Things Wikidata records the company as owning, with the share when stated.1

The story

History

Powergen was formed in 1989 as a public limited company which was wholly owned by the UK government and acquired about 50% of the Central Electricity Generating Board generating capacity. Sir Robert Malpas was Chairman of the Group from 1989 to 1991. Sixty per cent of Powergen was sold to private investors in 1991, followed by the remaining 40% in March 1995. It expanded considerably by acquiring the regional electricity company East Midlands Electricity in 1998 and the supply business of TXU Energi in 2002. Powergen was eventually taken over itself by E.ON, with the original offer made in April 2001, an acquisition which was completed in January 2002.

It then bought the distribution network operator Midlands Electricity in 2004. This was merged with the distribution business of East Midlands Electricity and rebranded as Central Networks. The Industrial & Commercial Retail business was rebranded as E.ON UK on 5 July 2004. The creation of the Central Networks business in April 2004 included "a company of E.ON" as part of its logotype. In October 2005 it was also added to the Powergen logotype.

In June 2007, a major advertising campaign entitled "The wind of change", containing advertisements using the E.ON logo, was launched. The campaign featured the Robin Rigg offshore wind farm in the Solway Firth, currently in development. In the consumer market, this was complemented by a replacement of the mostly blue Powergen identity to the red identity of E.ON, and the launch of a new product, Go Green, using electricity from renewable sources and carbon offset gas.

On 22 October 2007, the company announced that the E.ON Energy and Powergen brands would change to E.ON as of 1 November and 3 December 2007 respectively.

In January 2008, E.ON acquired West Midlands-based CHN Group, a provider of heating services to builders, local authorities and housing associations across the region. and in August 2008 completed the purchase of the Street Lighting business lighting projects of ABB Ltd. It intended to improve its existing lighting business by purchasing ABB.

In 2008 and 2009 a number of protests took place at E.ON UK's power station including a Climate Camp at their Kingsnorth power station in August 2008 and at their Ratcliffe-on-Soar Power Station in October 2009.

Restructuring

On 20 January 2010, E.ON UK announced the closure of its Rayleigh Customer Service Centre and the loss of 600 jobs. The company was forced to bring forward the announcement by one day after the information was leaked to a local newspaper. This has been criticised as a money-saving exercise by an organisation which has seen an increase in profits of 18% in 2009 and news that E.ON UK have made £80 million in profits so far in the financial year 2009/10.

Other businesses within E.ON were also affected by these round of job losses, including its IT support and its Highways Lighting operations.

Read the full text

In March 2011, E.ON sold Central Networks to PPL's UK subsidiary Western Power Distribution for £3.5 billion.

In October 2012, E.ON sold its 50% stake in Horizon Nuclear Power to Hitachi for £348 million. The other 50% stake, held by RWE npower, was also sold to Hitachi for the same amount, giving a total sale value of £696 million.

Late in 2012, E.ON UK announced the closure of the 'Ignite' business, originally tasked with bringing alternative localised-generation products to market for E.ON UK.

In 2013, E.ON Home Energy Services was sold in a management buyout.

Acquisition of Npower

Just after the failed SSE-Npower merger of retail assets in late 2018, it was reported that the Big Six energy suppliers would still consolidate to the Big Five, as Npower would be acquired by default by E.on UK, due to the already-planned asset swap of the respective German parents Innogy and E.ON. Following the merger of npower, E.ON UK became the largest overall provider of electricity and gas in the UK; remaining the second largest provider of electricity and gas to domestic customers.

Acquisition of OVO Energy

In May 2026, E.ON announced it had reached an agreement to acquire OVO Energy, subject to regulatory approval. The Competition and Markets Authority approved the acquisition on 1 October 2026, and it completed on 8 October 2026. Following the acquisition, the combined company is Britain's second-largest energy supplier, holding a 25% market share.

History

After the acquisition of Npower in 2019, E.ON announced its bid to re-invent the business by launching E.ON Next, which has been built from the ground up as a new organisation and brand. E.ON Next entered a strategic agreement with Octopus Energy Group to adopt the Kraken Technologies customer platform.

In May 2021, the company announced it migrated 2 million former Npower customers onto E.ON Next's new platform, including subsidiary companies npower Select, Wigan Warriors Energy and Wasps Energy as well as Powershop. Former CEO Mike Lewis (succeeded by Chris Norbury in 2023) also revealed in an interview to BBC that they will migrate all existing E.ON customers to the new platform. The migration of E.ON customers was successfully completed over two years with unprecedented success, making it one of the fastest and largest customer migrations undertaken in the UK.

E.ON Next was appointed to take on Hub Energy's 15,000 customers by Ofgem in August 2021. This was followed by ENSTROGA, Igloo Energy, and Symbio Energy in the same year.

From Wikipedia’s article on E.ON UK, shared under CC BY-SA 4.0.5

Products and brands

  • gas

Listed on Wikidata.1

Operations

The company's headquarters are in Coventry at Westwood Business Park, in a building designed by Bennetts Associates. There are numerous other offices and power generation sites across the country.

UK businesses

E.ON UK's businesses consist of:

Energy Solutions (a merger of the former Retail and Energy Services businesses)

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Business Services (an internal service provider)

Central functions including Corporate Affairs & Finance under the banner UK Centre

E.ON Climate and Renewables – renewables and climate protection projects

E.ON IT UK – the company's IT service provider

E.ON Next – which services its residential and small business customers.

npower Business Solutions – mid-market & large business energy supply.

Generation

E.ON operates a number of onshore and offshore wind farms, biomass power stations, Combined Heat and Power plants in the UK. It formerly ran a number of fossil plants which are now wholly owned and run by Uniper.

Distribution network operators

E.ON UK is an energy supplier for homes across the country. They do not however manage the network of towers and cables that distributes electricity – these are maintained by distribution network operators (DNOs) which vary from region to region.

From Wikipedia’s article on E.ON UK, shared under CC BY-SA 4.0.5

Subsidiaries and ownership

Parent company

Owners

Subsidiaries

From Wikidata.1

Acquisitions

  1. 2019Acquired npower1

Timeline

  1. Mar 10, 2021Parent Directly consolidated by E.ON3
  2. 1990Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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