Energy Suppliers

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Key information

Energy suppliers are the companies that supply the gas and electricity in your home. Most energy companies in the UK do not own any of the networks of cables or pipes that deliver the gas and electricity to your home.

We’ve made it easy to start an energy comparison and switch suppliers using Utility Saving Expert.

In the UK there are around 60 energy suppliers. We check the tariffs of every single energy supplier and show you the best tariffs you can get in your home. If you decide to switch to a cheaper supplier, it’s quick and simple with Utility Saving Expert.

We are paid a fee from the 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.


Who are the ‘Big 6’ energy suppliers?

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Our energy comparison technology is accredited by Ofgem. Compare with confidence.

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We are proud to support the Government’s Power to Switch campaign.

Our Fuel Poverty Promise

We promise to donate 10% of our yearly net profits to fight fuel poverty.

Which energy supplier should I choose?

You can find out more about the UK’s 60+ energy suppliers here. Each of our guides includes:

  • A basic introduction to the energy supplier
  • The history of the energy suppliers
  • The schemes the energy suppliers have in place to help people who are on a low income or in debt
  • The fuel mix used in the energy suppliers electricity generation
  • The current tariffs offered by the energy suppliers

To switch commercial energy please visit our business energy page.

Compare Business Electricity Prices, Suppliers & kWh Rates

List of UK energy suppliers

Use this section of the website to find out more about the UK’s energy suppliers.

Energy Supplier Supplier OverviewWhich? Customer score*
Affect EnergyAffect Energy is one of the newer energy suppliers in the marketNot Yet Rated
Green Energy (UK)Green Energy (UK) supplies all its electricity from renewable sourcesNot Yet Rated

*Which? customer score is a percentage of overall satisfaction with a particular energy supplier. It takes into account the following; 1. Bill accuracy 2. Bill clarity 3. Customer Service (phone) 4. Customer Service (online) 5. Complaints handling 6. Helping customers understand and reduce energy use and 7. overall value for money. For more information please visit: https://switch.which.co.uk/energy-suppliers/energy-companies-rated.html

Compare Business Electricity Prices, Suppliers & kWh Rates

List of business energy suppliers

Our business supplier comparison engine compares the following providers and many more:

Compare business gas and business electricity tariffs within minutes through Utility Saving Expert.

Energy Supplier Supplier OverviewWhich? Customer score*
Affect EnergyAffect Energy is one of the newer energy suppliers in the marketNot Yet Rated
Green Energy (UK)Green Energy (UK) supplies all its electricity from renewable sourcesNot Yet Rated
Avro Energy Avro Energy is a new supplier that entered the market in 201564%
Beam Energy Beam Energy is new supplier owned and operated by London Borough of Barking and Dagenham Council.64%
Green Star EnergyGreen Star Energy focuses on offering cost-effective gas and electricity65%
Better EnergyBetter Energy promises to offer the lowest gas prices available Not Yet Rated
Enstroga EnergyEnstroga Energy is a new independant gas and electricity supplierNot Yet Rated
Angelic EnergyAngelic Energy is owned and operated by Islington Council Not Yet Rated
ESB EnergyESB Energy offers great valuie gas and electricity tariffs Not Yet Rated
Bristol EnergyBristol Energy describes itself as an energy supplier with a social conscience 72%
British GasBritish Gas is the biggest of all the energy suppliers in the UK 56%
Bulb EnergyBulb is a supplier of renewable energy that promises competitive prices 72%
Cardiff Energy SupplyCESL promises you will always pay one of the lowest tariffs on the market Not Yet Rated
Co-Operative Energy Co-operative Energy is the only energy supplier owned by its customersN/A
Boost PowerBoost Power is a releatively new pre-payment energy provider N/A
Utility WarehouseUtility Warehouse is committed to offering cheaper tariffs than the Big 6 73%
DaligasDaligas is an energy company promising transparency and simplicity Not Yet Rated
EBICoEBICo is a not-for-profit renewable energy company offering fair prices 76%
Economy EnergyEconomy Energy is a gas and electricity company offering low tariffs 53%
EcotricityEcotricity is a not-for-profit renewable energy company with ethical pricing N/A
E.OnE.ON UK is the fourth biggest energy supplier in the UK 57%
EDF EnergyEDF Energy is the second biggest energy supplier in the UK 57%
Fairerpower Fairerpower is a partnership between OVO Energy and Cheshire East Council Not Yet Rated
Shell Energy (formerly First Utility) Shell Energy (formerly First Utility) is one of the UK’s largest independent energy companies Not Yet Rated
Flow EnergyFlow Energy is one of the energy market’s newest suppliers 68%
Future Energy Future Energy only offers one gas and one electricity tariff Not Yet Rated
GB Energy GB Energy is now part of The Co-operative Energy Not Yet Rated
GlideGlide provides bill sharing services and student utility bills Not Yet Rated
Gen4U Gen4U is an energy company offering low prices and good service Not Yet Rated
Go Effortless Energy Go Effortless Energy only offers one gas and one electricity tariff Not Yet Rated
Good Energy Good Energy supplies all its electricity from renewable sources Not Yet Rated
GnERGY GnERGY promises to be an open and honest gas and electricity company Not Yet Rated
White Rose Energy White Rose Energy is a not-for-profit gas and electricity supplier Not Yet Rated
UtilitaUtilita provides prepayment meters to low income and energy conscious households 71%
Octopus EnergyOctopus Energy is a new energy supplier with straightforward pricing 80%
Iresa Limited Iresa Limited focuses on delivering straightforward prices, billing and service Not Yet Rated
npowernpower is the third biggest gas and electricity supplier in Britain 54%
Peterborough EnergySouthend Energy is a partnership between OVO Energy and Peterborough City Council Not Yet Rated
Tonik EnergyTonik Energy wants to halve customers’ energy bills by 2022 Not Yet Rated
Together Energy Together Energy wants to be the most trusted energy company 60%
The Energy Deal The Energy Deal wants to combine fair prices and enjoyable service Not Yet Rated
SO EnergySO Energy promises its tariffs will always be among the cheapest 78%
Robin Hood EnergyRobin Hood Energy is an independent not-for-profit gas and electricity supplier 78%
Sainsbury EnergySainsbury’s Energy is a partnership between Sainsbury’s and npower 63%
Scottish PowerScottish Power is the fifth biggest energy supplier in the UK 54%
Places for People EnergyPlaces for People Energy promises great service and great savings Not Yet Rated
iSupply Energy iSupply Energy promises to offer straightforward low prices, not complicated deals 57%
LoCO2 Energy LoCO2 Energy is an independent company offering renewable energy at competitive prices Not Yet Rated
M&S Energy M&S Energy matches all its electricity with UK-based renewable sources Not Yet Rated
National Gas National Gas is a very new energy supplier that only supplies gas Not Yet Rated
OVO EnergyOVO Energy delivers a high proportion of its energy from renewable sources 74%
Southend EnergySouthend Energy is a partnership between OVO Energy and Southend-on-Sea Borough Council Not Yet Rated
Spark EnergySpark Energy is one of the biggest energy companies outside the Big 6 52%
SSE SSE is the sixth biggest gas and electricity supplier in Britain 58%
SSE AirtricitySSE Airtricity is a member of the SSE Group 62%
SSE Southern ElectricSSE Southern Electric is a member of the SSE Group 62%
SSE SWALECSSE SWALEC is a member of the SSE Group Not Yet Rated

*Which? customer score is a percentage of overall satisfaction with a particular energy supplier. It takes into account the following; 1. Bill accuracy 2. Bill clarity 3. Customer Service (phone) 4. Customer Service (online) 5. Complaints handling 6. Helping customers understand and reduce energy use and 7. overall value for money. For more information please visit: https://switch.which.co.uk/energy-suppliers/energy-companies-rated.html

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