Meet the UK’s biggest energy suppliers
Energy suppliers are the companies that supply the gas and electricity in your home. Most energy suppliers in the UK do not own any of the network of cables or pipes that delivers the gas and electricity to your home. Their business is buying wholesale electricity or gas, paying network and government charges, and then selling the gas and electricity to you. Think of them in the same way as the railway industry in the UK. Train companies own the trains but they do not own the tracks they run on.
In the UK there are around 60 energy suppliers. You can find out more about the UK’s energy suppliers here.
We also recommend you use our Click & Compare service.
We check the tariffs of every single energy supplier in the UK and show you the best tariffs you can get in your home.
And if you decide to switch to a cheaper supplier, we’ll do that for you. No hassle, no charge!
We are paid a fee from the energy suppliers for every switch completed. The fee is already included within the marketing budgets of the energy suppliers so the prices you see on our site are the same as you’ll see on theirs.
You’ll probably have heard people talking about the ‘Big 6’ energy suppliers.
When people refer to the Big 6, they mean the six largest companies supplying gas and electricity to the homes and businesses in the UK. And when we say Big 6, we really mean it. Together, the Big 6 energy companies supply over 90% of the homes in Britain, which means they completely dominate the market.
The Big 6 energy companies are:
With the gas and electricity in over 90% of Britain’s homes supplied by one of these six companies, it is likely that your energy supplier is one of the ones listed above.
If you would like to move to another supplier, whether one of the Big 6 or one of the smaller suppliers, UtilitySavingExpert.com makes it easy with our Click & Compare service.
And with our no hassle, no cost switching service, changing supplier only takes a couple of minutes.
You can find out more about the UK’s 60 or so energy suppliers here. Each of our guides has:
a basic introduction to the energy supplier the history of the energy supplier the schemes the energy supplier has in place to help people who are on a low income or in debt the fuel mix used in the energy supplier’s electricity generation the current tariffs offered by the energy supplier– To compare commercial energy please visit our business energy page.
Use this section of the website to find out more about the UK’s energy suppliers. Then use our Click & Compare tool to see which energy supplier will save you the most money and let us get you switched!
Affect Energy is one of the newer energy suppliers in the market
Avro Energy is a new supplier that entered the market in 2015
Better Energy promises to offer the lowest gas prices available
Bristol Energy describes itself as an energy supplier with a social conscience
British Gas is the biggest energy supplier in the UK
Bulb is a supplier of renewable energy that promises competitive prices
CESL promises you will always pay one of the lowest tariffs on the market
Co-operative Energy is the only energy supplier owned by its customers
Utility Warehouse is committed to offering cheaper tariffs than the Big 6
Daligas is an energy company promising transparency and simplicity
E is a gas and electricity supplier offering low and fair pricing
EBICo is a not-for-profit renewable energy company offering fair prices
Economy Energy is a gas and electricity company offering low tariffs
Ecotricity is a not-for-profit renewable energy company with ethical pricing
EnergySW is owned by south west housing providers with OVO Energy
E.ON UK is the fourth biggest energy supplier in the UK
EDF Energy is the second biggest energy supplier in the UK
Extra Energy focuses on helping you save money on your energy bills
Fairerpower is a partnership between OVO Energy and Cheshire East Council
First Utility is one of the UK’s largest independent energy companies
Flow Energy is one of the energy market’s newest suppliers
Future Energy only offers one gas and one electricity tariff
GB Energy is now part of The Co-operative Energy
Glide provides bill sharing services and student utility bills
Gen4U is an energy company offering low prices and good service
Go Effortless Energy only offers one gas and one electricity tariff
Good Energy supplies all its electricity from renewable sources
GnERGY promises to be an open and honest gas and electricity company
White Rose Energy is a not-for-profit gas and electricity supplier
Green Energy (UK) supplies all its electricity from renewable sources
Green Star Energy focuses on offering cost-effective gas and electricity
Iresa Limited focuses on delivering straightforward prices, billing and service
iSupply Energy promises to offer straightforward low prices, not complicated deals
LoCO2 Energy is an independent company offering renewable energy at competitive prices
M&S Energy matches all its electricity with UK-based renewable sources
National Gas is a very new energy supplier that only supplies gas
npower is the third biggest gas and electricity supplier in Britain
Octopus Energy is a new energy supplier with straightforward pricing
OVO Energy delivers a high proportion of its energy from renewable sources
Southend Energy is a partnership between OVO Energy and Peterborough City Council
Places for People Energy promises great service and great savings
Robin Hood Energy is an independent not-for-profit gas and electricity supplier
Sainsbury’s Energy is a partnership between Sainsbury’s and British Gas
Scottish Power is the fifth biggest energy supplier in the UK
Southend Energy is a partnership between OVO Energy and Southend-on-Sea Borough Council
Spark Energy is one of the biggest energy companies outside the Big 6
SSE is the sixth biggest gas and electricity supplier in Britain
SSE Airtricity is a member of the SSE Group
SSE Atlantic is a member of the SSE Group
SSE Scottish Hydro is a member of the SSE Group
SSE Southern Electric is a member of the SSE Group
SSE SWALEC is a member of the SSE Group
SO Energy promises its tariffs will always be among the cheapest
The Energy Deal wants to combine fair prices and enjoyable service
Together Energy wants to be the most trusted energy company
Tonik Energy wants to halve customers’ energy bills by 2022
Utilita provides prepayment meters to low income and energy conscious households
