British Gas is the largest supplier for domestic gas and electricity. The parent company is Centrica Group which merged with British Gas in 1997 and the company also operated under the names of Nwy Prydain in Wales and Scottish Gas in Scotland.
EDF Energy is also one of the ‘Big Six’ energy suppliers with electricity supply being generated from numerous different sources such as power plants, wind farms and other traditional methods.
E.ON was formally known as Powergen, when the company got created in 1990. The takeover by E.ON in 2002 led to the company name being changed in 2007. E.ON is also one of the largest suppliers of gas and electricity.
Npower is a gas and electricity energy supplier to 3.1 million customers in the UK. It first began as National Power in 1990 when the privatisation of the Central Electricity Generating Board took place. The company is now owned by the RWE Group which includes other German gas and electricity companies.
Scottish Power has a large distribution network which serves 5.6 million domestic customers in the UK. It was first formed in 1990 after the privatisation of the Scottish electricity industry and in 1995 it bought out the regional supplier, Manweb
SSE is part of the ‘Big Six’ and it is the parent company to SSE Atlantic, SSE SWALEC, SSE Scottish Hydro and SSE Southern Electric. They are the largest distribution network in the UK with supply to over 10 million customers.
SSE Atlantic is a supplier of both electricity and gas, it was bought out by SSE in 2004 and it provides its services in the regions of Midlands, East Midlands, Northwest, Yorkshire and the North.
The Co-operative Energy
The Co-operative Energy is founded by a regional co-operative but it is very much a national energy business covering the UK.
EBICO was founded in 1998 and it is a not-for-profit gas and electricity supplier. Their unit price for gas and electricity is exactly the same regardless of your usage.
Ecotricity looks to find and build new renewable sources to generate energy. The more customers the company has, the more they invest into obtaining sustainable energy.
First Utility was founded in 2008 and the supplier is growing in size. It is one of the largest independent suppliers of electricity and gas making it a strong contender against the conventional ‘Big Six’.
Flow Energy offers simplicity with one fixed rate tariff which is only available on direct debit with paperless billing to keep costs as low as possible.
Good energy is an award winner for green energy supply as it sources energy from water, wind and the sun. The pricing is also competitive as they challenge the ‘Big Six’ suppliers.
Green Energy UK offers three tariffs: still, sparkling and Tap. The sparkling tariff is 100% renewable, using sources such as solar, hydro, wind and organic waste material.
LoCO2 is a family-run renewable energy supplier with a low-carbon footprint.
M&S Energy are backed by SSE, offering electricity and gas plans made available via SSE.
OVO Energy is an independent supplier offering cheaper and greener energy. Their objective is to build the UKs most trusted energy company.
Sainsbury’s Energy is in a partnership with British Gas where by customers can get nectar points for shopping in Sainsbury stores etc.
SSE Scottish Hydro
SSE Scottish Hydro is part of the SSE Group. It was formed in December 1998 after the merger of Scottish Hydro Electric and Southern Electric. The group also includes SSE Atlantic among other companies.
SSE Southern Electric
SSE Southern Electric is part of the SSE Group. It was formed in December 1998 after the merger of Scottish Hydro Electric and Southern Electric.
Spark Energy used to focus on landlords but now has energy tariffs for the whole domestic market.
SSE Swalec is part of the SSE Group which is the largest distribution network in the UK. It was formed in December 1998 after the merger of Scottish Hydro Electric and Southern Electric.
Utility Warehouse is a small supplier in the UK and it aims to provide different utilities in the UK.
Utilita is a leading provider of pay-as-you-go energy using smart meter technology.
Extra Energy is a relatively new supplier with a vision to induce efficiency which can be passed on to their customers. By running a lean business, they offer to continue becoming competitive and therefore delivering bigger savings to households and businesses.
Gnergy is a community energy supplier providing both gas and electricity services. They aim to drive their success based on customer satisfaction and hence the majority of their tariffs allow you to leave the supplier with no penalties.
Zog energy aims to provide transparency in their tariff options and looks to keep their costs at bay. They are invested in cloud computing and efficient customer management systems to allow them to offer competitive gas tariffs.
GB Energy Supply
GB Energy Supply is a new company established in 2014, providing energy and gas supply to the UK home market.
Better Energy Supply Ltd is an independent energy company licensed to provide electricity and gas services to the UK market.
Daligas is a private company founded in the UK with a goal to achieve trust and satisfaction. They are head quartered in London.
Woodland Trust Energy
Woodland Trust Energy works alongside OVO energy to provide cheaper and greener energy solutions. For every customer that switches to the Woodland Trust Energy, OVO donate to the trust to protect native woodlands in the UK.
ISupplyEnergy is a new electricity supplier in the UK; they are based in Dorset on the South Coast of England.