SSE plc history

The company was founded in December 1998 and is headquartered in Perth, the United Kingdom.“

By 1999, Britain's retail market would be deregulated, which would allow approximately 23 million customers to choose their energy supplier and end the monopolistic position held by the 12 RECs in England, Wales, and Scotland.

In 2000, Scottish and Southern Energy acquired the SWALEC energy supply business.

SSE and Midlands' parents failed to agree on a price and the merger was called off in 2003.

In July 2004, the company acquired the Ferrybridge and Fiddlers Ferry Power Stations for £250 million.

The £3.16 billion purchase would include two gas distribution networks and was expected to be completed in April 2005.

In August 2009, it agreed to purchase Uskmouth power station from Welsh Power Group Limited.

In January 2010, Scottish and Southern Energy changed the core company branding from Scottish and Southern Energy to SSE.

The SSE Hydro is an arena located in Glasgow, Scotland, on the site of the Scottish Event Campus (SEC). The arena officially opened on 30 September 2013, and has a capacity of 13,000.

In October 2014, SSE became the first company on the FTSE 100 to be awarded the Fair Tax Mark which is an independent accreditation process for identifying companies making an effort to be transparent about their tax affairs.

The Odyssey Arena located within the Odyssey Complex in Belfast, Northern Ireland, is known as The SSE Arena, Belfast and has a sponsorship agreement for ten years, which began in June 2015.

In March 2016, SSE announced it would be closing all branches of its Scottish Hydro Electric shops and the accompanying online store, citing "changing shopping habits and more customer choice meant the shops have been loss-making for a number of years".

In November 2017, it was announced that SSE was looking to separate from its retail subsidiary which would then merge with the npower division of rival Innogy.

In November 2019, SSE moved its UK business into a new Swiss holding company, confirming that it had done so following the Labour Party's pledge to take it into state ownership.

In 2020, the company sold its GB electricity supply business to Ovo Energy, to focus on its core businesses of electricity networks and renewables.

In August 2021, SSE agreed to sell its 33.3 percent stake in SGN for £1.2 billion.