The Big 6 Energy Suppliers
Thursday, August 11th, 2011The Big 6 have been in the news a lot lately and not entirely for the right reasons. We hear so much about them, but the information usually only goes as far as price rises.
So who are these energy behemoths that fuel our gas boilers and heat our showers in the morning?
After privatisation on March 31st 1990 the energy industry changed dramatically. As a result 6 companies have emerged as key players in the UK energy market.
Npower
Npower supplies gas and electricity to around 7 million customers in the UK and employs over 11,000 staff. It predominantly produces energy using gas-fired, coal and oil powered stations with a small proportion being generated via renewable energy.
During the 1990s it acquired several smaller companies such as Midlands Electricity, Calortex, and Independent Energy and eventually became Npower in 2000.
They are currently a member of the ‘Percent Club’ which requires them to invest more than 1% of their pre-tax profits back into the community.
British Gas
British gas (including Scottish Gas & Welsh Gas) is the largest energy supplier in the UK and delivers gas and electricity to over 16 million domestic and commercial users. The company also operates in the U.S and Canada with recorded revenues of over $22 billion in 2010.
It currently operates 8 gas-fired power stations but also produces energy via various methods including the largest offshore wind farm in Europe. The giant wind farm covers an area of 20 square km and has 54 turbines.
EDF Energy
EDF energy was founded in 2002 and is owned by French state operated EDF SA. EDF stands for Électricité de France. The UK arm employs over 15,000 people and supplies gas and electricity to almost 6 million homes and businesses.
EDF has made a number of acquisitions including London Electricity, SEEBoard and British Energy. They continue to be a big supporter of green initiatives with EDF operating over 20 wind farms in the UK.
E.ON
E.ON supplies gas and electricity to over 9 million homes in the UK. They operate over 20 windfarms, but also utilise hydropower schemes in England and Wales.
It is currently part of the largest investor owned energy service company in the world delivering gas and electricity to over 26 million customers, their headquarters are based in Germany. The group reported revenues exceeding $92 billion in 2010.
E.ON used to be known as Powergen but was taken over in 2002 and renamed.
Scottish Power
Scottish Power was founded in 1990, employs 24,000 staff and supplies gas and electricity to over 5 million customers in the UK. It is also a subsidiary of Spanish utility company Iberdrola.
It is currently in partnership with Sainsbury’s. So if you buy your energy through Sainsbury’s you are in fact using Scottish Power.
Iberdola bought the company in 2007 for £11.6 billion and effectively incorporated it into its structure making it the third largest energy supplier in Europe.
SSE
SSE supplies 10 million customers with gas and electricity in the UK. They were the first company to be awarded the UK Domestic Electricity and Gas Supplier in Customer Satisfaction prize. They were also responsible for building the first deep water wind turbine in the UK.
SSE have also invested over £850 million in renewable generation, refurbishment and various other construction projects.
Guest Article by Louise Goldstein






My name is Alan Potts and I'm the Editor of the Gasboiler-BUYability web site and Managing Director of BUYability Limited. You can connect with me or keep up to date with new posts on this blog via the following social media sites: 








