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ENERGY SUPPLIERS

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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?

You’ve probably 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 homes and businesses in the UK. 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:

  1. British Gas
  2. EDF Energy
  3. nPower
  4. EON UK
  5. Scottish Power
  6. SSE

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.


Which energy supplier should I choose?

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

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

To switch commercial energy please visit our business energy page.


List of UK energy suppliers

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

Supplier Logo
Energy Supplier
Supplier Overview
Which? customer score*
affect energy logo
Affect Energy
Affect Energy is one of the newer energy suppliers in the market
Not Yet Rated
Green Energy (UK)
Green Energy (UK)
Green Energy (UK) supplies all its electricity from renewable sources
Not Yet Rated
Avro Energy
Avro Energy
Avro Energy is a new supplier that entered the market in 2015
64%
green star energy logo
Green Star Energy
Green Star Energy focuses on offering cost-effective gas and electricity
65%
Better Energy Logo
Better Energy
Better Energy promises to offer the lowest gas prices available
Not Yet Rated
Bristol Energy Logo
Bristol Energy
Bristol Energy describes itself as an energy supplier with a social conscience
72%
British Gas Logo
British Gas
British Gas is the biggest of all the energy suppliers in the UK
56%
Bulb Energy Logo
Bulb Energy
Bulb is a supplier of renewable energy that promises competitive prices
72%
Cardiff Energy Supply Logo
Cardiff Energy Supply
CESL promises you will always pay one of the lowest tariffs on the market
Not Yet Rated
Co-operative Energy Logo
Co-Operative Energy
Co-operative Energy is the only energy supplier owned by its customers
66%
Utility Warehouse Logo
Utility Warehouse
Utility Warehouse is committed to offering cheaper tariffs than the Big 6
73%
Daligas Logo
Daligas
Daligas is an energy company promising transparency and simplicity
Not Yet Rated
EBICo Logo
EBICo
EBICo is a not-for-profit renewable energy company offering fair prices
76%
Economy Energy Logo
Economy Energy
Economy Energy is a gas and electricity company offering low tariffs
53%
Ecotricity Logo
Ecotricity

Ecotricity is a not-for-profit renewable energy company with ethical pricing
72%
eon Logo
E.On
E.ON UK is the fourth biggest energy supplier in the UK
57%
EDF Energy Logo
EDF Energy
EDF Energy is the second biggest energy supplier in the UK
57%
Extra Energy Logo
Extra Energy
Extra Energy focuses on helping you save money on your energy bills
Not Yet Rated
Fairerpower Logo
Fairerpower
Fairerpower is a partnership between OVO Energy and Cheshire East Council
Not Yet Rated
Shell Energy Logo
Shell Energy (formerly First Utility)
Shell Energy (formerly First Utility) is one of the UK’s largest independent energy companies
Not Yet Rated
Flow Energy Logo
Flow Energy
Flow Energy is one of the energy market’s newest suppliers
68%
Future Energy Logo
Future Energy
Future Energy only offers one gas and one electricity tariff
Not Yet Rated
GB Energy Logo
GB Energy
GB Energy is now part of The Co-operative Energy
Not Yet Rated
Glide Logo
Glide
Glide provides bill sharing services and student utility bills
Not Yet Rated
Gen4U Enery Logo
Gen4U
Gen4U is an energy company offering low prices and good service
Not Yet Rated
Go Effortless Energy Logo
Go Effortless Energy
Go Effortless Energy only offers one gas and one electricity tariff
Not Yet Rated
Good Energy Logo
Good Energy
Good Energy supplies all its electricity from renewable sources
Not Yet Rated
GnERGY Logo
GnERGY
GnERGY promises to be an open and honest gas and electricity company
Not Yet Rated
White Rose Energy Logo
White Rose Energy
White Rose Energy is a not-for-profit gas and electricity supplier
Not Yet Rated
Utilita Logo
Utilita
Utilita provides prepayment meters to low income and energy conscious households
71%
Octopus Energy Logo
Octopus Energy
Octopus Energy is a new energy supplier with straightforward pricing
80%
Iresa Limited Logo
Iresa Limited
Iresa Limited focuses on delivering straightforward prices, billing and service
Not Yet Rated
npower Logo
npower
npower is the third biggest gas and electricity supplier in Britain
54%
Peterborough Energy Logo
Peterborough Energy
Southend Energy is a partnership between OVO Energy and Peterborough City Council
Not Yet Rated
Tonik Logo
Tonik Energy
Tonik Energy wants to halve customers’ energy bills by 2022
Not Yet Rated
Together Energy Logo
Together Energy
Together Energy wants to be the most trusted energy company
60%
The Energy Deal Logo
The Energy Deal
The Energy Deal wants to combine fair prices and enjoyable service
Not Yet Rated
SO Energy Logo
SO Energy
SO Energy promises its tariffs will always be among the cheapest
78%
Robin Hood Energy Logo
Robin Hood Energy
Robin Hood Energy is an independent not-for-profit gas and electricity supplier
78%
Sainsburys Energy Logo
Sainsbury’s Energy
Sainsbury’s Energy is a partnership between Sainsbury’s and npower
63%
ScottishPower Logo
Scottish Power
Scottish Power is the fifth biggest energy supplier in the UK
54%
Places for People Energy Logo
Places for People Energy
Places for People Energy promises great service and great savings
Not Yet Rated
iSupply Energy Logo
iSupply Energy
iSupply Energy promises to offer straightforward low prices, not complicated deals
57%
LoCO2 Energy Logo
LoCO2 Energy
LoCO2 Energy is an independent company offering renewable energy at competitive prices
Not Yet Rated
M&S Energy Logo
M&S Energy
M&S Energy matches all its electricity with UK-based renewable sources
Not Yet Rated
National Gas Logo
National Gas
National Gas is a very new energy supplier that only supplies gas
Not Yet Rated
OVO Energy Logo
OVO Energy
OVO Energy delivers a high proportion of its energy from renewable sources
74%
Southend Energy Logo
Southend Energy
Southend Energy is a partnership between OVO Energy and Southend-on-Sea Borough Council
Not Yet Rated
Spark Energy Logo
Spark Energy
Spark Energy is one of the biggest energy companies outside the Big 6
52%
SSE Logo
SSE
SSE is the sixth biggest gas and electricity supplier in Britain
58%
SSE Airtricity Logo
SSE Airtricity
SSE Airtricity is a member of the SSE Group
62%
SSE Southern Electric Logo
SSE Southern Electric
SSE Southern Electric is a member of the SSE Group
62%
SSE SWALEC Logo
SSE SWALEC
SSE 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


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.

Supplier Logo
Business Energy Supplier
Reviews / Ratings*
British Gas Business Logo
British Gas Business
Read Reviews
EDF Business Energy
EDF Energy
Not Yet Rated
SSE Business Logo
SSE
Read Reviews
Corona Energy Logo
Corona Energy
Not Yet Rated
Yorkshire Gas and Power Logo (YGP)
Yorkshire Gas and Power
Not Yet Rated
Extra Energy Logo
Extra Energy
Read Reviews
Opus Energy Logo
Opus Energy
Not Yet Rated
Bristol Energy Logo
Bristol Energy
Read Reviews
Engie Logo
Engie
Not Yet Rated
Octopus Energy Logo
Octopus Energy
Not Yet Rated
E.On Logo
E.ON
Read Reviews
Crown Gas and Power Logo
Crown Gas & Power
Not Yet Rated
Haven Power Logo
Haven Power
Not Yet Rated
United Gas and Power Logo
United Gas & Power
Not Yet Rated
Gazprom Logo
Gazprom Energy
Not Yet Rated
npower logo
npower Business
Read Reviews
Avanti Gas Logo
Avanti Gas
Not Yet Rated
ScottishPower Logo
Scottish Power
Not Yet Rated
Dual Energy Logo
Dual Energy
Not Yet Rated
Hudson Energy Logo
Hudson Energy
Not Yet Rated
Contract Natrual Gas Logo
Contract Natrual Gas (CNG)
Not Yet Rated
Clear Business Energy Logo
Clear Business Energy
Not Yet Rated
Utilita Logo
Utilita
Read Reviews
total gas and power logo
Total Gas & Power
Not Yet Rated

*Supplier ratings are based on aggregated reviews, over the last 12 months, from Google certified review partners.


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