British Gas is the UK’s largest supplier of gas and electricity for domestic use and is part of the Centrica Group, which was formed following the merger of British Gas plc in 1997. British Gas also operates under the names Scottish Gas in Scotland and Nwy Prydain in Wales.
EDF Energy is one of the ‘Big Six’ suppliers. It was created in 2003, five years after French energy company EDF Group (Électricité de France) bought Seeboard, London Energy and SWEB Energy.
E.ON is one of the UK’s largest electricity and gas suppliers. Formally known as Powergen, the company was created in 1990 and was subsequently bought by German energy giant E.ON in 2002. It assumed the name of its parent company E.ON in late 2007.
npower supplies gas and electricity to around 6.8 million customers in the UK. Originally established as National Power in 1990 following the privatisation of the state-owned Central Electricity Generating Board, npower is now owned by RWE Group which incorporates Germany’s leading gas and electricity companies.
ScottishPower provides gas and electricity to over 5.2 million domestic customers in the UK and maintains a large distribution network. ScottishPower was formed in 1990, following the privatisation of the previously state-owned Scottish electricity industry. In 1995 it acquired the regional supplier, Manweb.
SSE (formerly Scottish and Southern Energy) is one of the ‘Big Six’ suppliers. It is the parent company for Atlantic, Scottish Hydro, Southern Electric and SWALEC and manages the largest distribution network in the UK.
Atlantic Electric and Gas supplies gas and electricity throughout the UK. The company was acquired by SSE in 2004, but continues to operate under its own brand name.
Co-operative Energy is part of the well-known Midcounties Co-operative, and is committed to sharing its profits with its members. Although founded by a regional co-operative, Co-operative Energy is a national business, covering the whole of England, Wales and Scotland.
EBICo is a not-for-profit company, which was founded in 1998. EBICo aims to use its status as a national company to further its ethical goals. They offer the only gas and electricity tariffs in the UK where each unit costs the same, no matter how much the customer uses.
Ecotricity is dedicated to building new sources of renewable energy and invest more per customer in this than all the other UK suppliers together. The more customers the company has the more investment they can make in building new renewable capacity.
First Utility has 190,000 customers, making it the seventh largest energy supplier in the UK. They supply both gas and electricity.
Boasting a 'simpler' energy experience, Flow offers just one fixed rate plan, and it is only available as a Direct Debit plan with paperless billing.
Good Energy is an award-winning green energy supplier, sourcing its electricity from renewables like sun, wind and water. The independent supplier's plans are also competitively priced compared to the big six's standard dual-fuel tariffs.
Green Energy UK sources its energy from UK-only renewable sources, excluding nuclear power. Green Energy offer three tariffs: Still, Sparkling and Tap. The Sparkling tariff is 100% renewable, utilising sources including hydro, solar, wind and organic waste material.
LoCO2 Energy is part of a privately owned group of UK energy companies who specialise in renewable energy.
M&S Energy is a subsidiary of SSE, and offers two energy options with built in rewards.
OVO Energy launched its domestic tariffs on the 2nd September 2009. OVO Energy offers simplified tariffs and the greenest standard dual fuel tariff in the market, with the option of either online account management or paper bills with every plan.
Sainsbury’s Energy is a partnership between Sainsbury's and British Gas. With Sainsbury's Energy customers can earn Nectar points on their gas and electricity bills each month.
Scottish Hydro Electric is owned by SSE, which manages the largest distribution network in the UK. Formed in December 1998 following the merger of Scottish Hydro Electric and Southern Electric, SSE has since also acquired SWALEC and Atlantic Electric and Gas.
Southern Electric is owned by SSE which manages the largest distribution network in the UK. Formed in December 1998 following the merger of Scottish Hydro Electric and Southern Electric, SSE has since also acquired SWALEC and Atlantic Electric and Gas.
Spark Energy is an energy company with a focus on rental properties and landlords.
Swalec is owned by SSE which manages the largest distribution network in the UK and services more than eight million customers. The company was formed in December 1998 following the merger of Scottish Hydro Electric and Southern Electric.
The Utility Warehouse is one of the smaller energy suppliers in the UK, and its aim is to offer a variety of different utilities under one roof.
Utilita is the leading supplier of pay-as-you-go energy in Great Britain using smart meter technology.