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Which are the Best and Cheapest Energy Suppliers in the UK?

UK energy suppliers

There are currently 62 energy suppliers operating in Great Britain catering to residential customers across the country, but which one do you choose? For years, the biggest energy suppliers in the land were the unchallenged masters of the energy markets, but that’s all starting to change. Smaller, independent companies are now starting to claw back their share of the market with their cheaper and overall, better tariffs, often with improved customer service. Let’s find out a little bit about the current situation!

The Big Six

The ‘Big Six’ refers to the six gas and electricity companies that currently hold around 74% market share in the UK. For years, they were unchallenged and happy to reign in their ‘oligopoly’. These companies are as follows:

Despite their largely uncontested reign for over 20 years, the stranglehold the Big Six have on the market is starting to crumble. Smaller, independent suppliers are beginning to take back control.

The issue with the Big Six over the years has been that their prices have been able to inflate massively without any great fluctuation in their customer base. As more people become aware of their right to switch, however, they are taking a bigger hit. Independents are getting a reputation for being simpler, quicker, cheaper and in general, better, which is causing huge problems for the bigger companies.

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Leave bad service and high prices behind!

Switch to an affordable provider with solid customer service today.

Independent suppliers

Now, we’ve seen the big suppliers, but who are these upstarts shaking things up? As mentioned above, there are 62 suppliers currently operating in the British residential energy markets, so apart from the big six companies above, the other 56 would come under this category right here.

A smaller, or independent supplier, in this sense, is one that is not owned by a huge backing of shareholders or, ultimately, who is not as big as the Big Six suppliers mentioned above. To name a few of the largest, here is a list of some of the independents currently operating in Great Britain:

Energy suppliers such as the abovementioned have put a huge emphasis, in general, on renewable energy and as they are not responsible for generation in the majority of cases, they are able to offer this supply at a much cheaper price. See below a trend graph of how independent companies have taken back market share:

It would be possible for the Big Six to offer this level of pricing on their own tariffs, but as they primarily focus on profit margins and generation profitability, they have maintained their highly inflated prices.

So which should you choose?

You’ve heard their names, but who is the best and who is the cheapest? Well, there’s no real answer for that that would stand the course of more than a month or so as prices and satisfaction levels rise and fall constantly. But, at present, we believe that the best deal comes through Tonik Energy. Given their rock bottom prices and sky high customer service levels, we believe that they offer the best possible tariffs at present.

Tonik Energy are an independent British-owned energy supplier that operate from Birmingham. All of their tariffs come with 100% renewable electricity and some even with renewable gas. One of the best attributes is also their top level customer service that has received 5 star reviews across all platforms.


Cheapest energy supplier




What to look out for

When you make a comparison of available tariffs, it’s sometimes tempting to just go straight for the first, cheapest tariff you see. It may well be the one you go for in the end, but there are a few things that you should perhaps bear in mind first. Of course, if you switch with Selectra we’ll make sure you’re well aware of these things, but if you go elsewhere, be careful!

Customer service

We’ve all been in the situation - you’re stuck on hold with a terrible outsourced customer service hotline, tearing your hair out hoping to the high heavens that your issue be resolved. Make sure that you don’t get yourself into another one of the situations by choosing a company that has high customer service ratings.

It just so happens that the most popular suppliers in the country have some of the worst satisfaction ratings. Perhaps have a change and go with a smaller supplier that impresses with its customer service levels. Below you can find a list of pages where you will find customer service telephone numbers.

Contract type

The two main contract types for dual fuel are fixed and variable. This refers to your unit rate, the amount you pay per unit of gas or electricity. If you opt for a variable tariff, your unit rate has the potential to rise or fall with wholesale prices and general market conditions, but if you have a fixed tariff, your unit rate will be locked in for your contract length (usually 1 or 2 years).

We recommend that you go for the fixed option. They are generally cheaper and variable tariffs almost always rise in price.

Exit Fees

If you do opt for a fixed tariff and you think they may be the possibility of cancelling before your contract runs out, you should look into the exit fees. These are usually per fuel and will be incurred if you want to cancel your contract before the agreed date.

A standard exit fee will be in the region of £30 per fuel, but vary depending on supplier and tariff. Most suppliers do have them, but some, like EDF Energy, don’t attach exit fees to any of their tariffs.

Renewable energy

If you would like to do your bit for the environment, you can usually opt for a renewable tariff for no extra cost. Most independent suppliers offer 100% renewable tariffs and a couple of the big six do, also. Having your energy delivered through renewable methods is a great way to support the move towards green energy generation.

Although you will not receive it to your home physically due to the common distribution infrastructure, your usage amount will be directly removed from fossil fuel demand. The more people that opt for renewable tariffs, the better our energy mix will become as a whole.

Full list of GB suppliers

How to Choose your New Supplier

Exit fees, dual fuel, variable pricing... to most people, trying to choose a new energy supplier is a confusing process full of unfamiliar jargon. It can make choosing a new supplier out of a list of unknown companies an intimidating and stressful process, even if Martin Lewis makes it look easy. But don’t worry, we’re breaking down the whole procedure to make switching fast, simple and stress-free.

When can I switch my supplier without a penalty?

yellow lightning bolts being swapped for blue lightning bolts

Want to switch your gas or electricity tariff but worried about having to pay an exit fee? We’ve got all the info you need to make sure that - fee or no fee - you’re getting the best deal possible.

First of all, you should make sure you’re current tariff even has an exit fee. Many variable tariffs don’t, so if you’re currently paying into a variable tariff (which we at Selectra don’t recommend) you should be able to switch fee-free.

As a rule, fixed-price tariffs do have an exit fee, but if you switch towards the end of your contract (within the last 49 days) your supplier can’t charge you a fee for switching.

If you are facing an exit fee, that shouldn’t stop you from switching. Most exit fees range from £5 to £30 per fuel (which would be £60 for electricity and gas). This pales in comparison to the hundreds of pounds of potential savings that can be gained by switching to a cheaper provider.

Choosing a Fixed or variable tariff

Whether or not you’re worried about an exit fee, you’ll need to decide whether you’ll opt for a fixed rate or variable tariff.

Not sure about the difference? With a variable tariff, the price of your gas and electricity will change over time in response to various market factors, primarily the market wholesale costs. While a fixed tariff holds a fixed price of energy for a set amount of time.

It’s important to remember that a fixed rate means that the price of energy per kilowatt hour is a fixed price, not that you will pay a fixed amount. Your bill will still depend on the amount of energy you use per month, standing charges, govt levies and more.

Here at Selectra, we recommend to all households that they contract a fixed price tariff. While the initial rate of a variable tariff may be lower than fixed offerings, this is unlikely to continue. The UK energy market is facing several turbulent factors going forward, including the effect of Brexit on the industry.


You can find more information on fixed vs. variable tariffs via the link below.

Dual fuel tariffs

Most homes have both electricity and gas connections, and receive both fuels from energy suppliers. Unless you live in an electricity-only household, you have the option of either contracting your gas and electricity separately or bundling them together with a dual fuel tariff.

About 15% of UK households are not connected to the national gas grid. These gasless households have different requirements when it comes to cooking and heating.

a flame next to a lightbulb

What are the benefits of a dual fuel tariff? Principally, to make your life simpler. By choosing one company to supply both your electricity and gas, you’ll receive just one bill and have one point of contact for all potential energy issues.

Many companies also offer a dual fuel discount to their customers, meaning that customers who contract both their gas and electricity with them will pay less than customers who contract their energy separately. Some suppliers' dual fuel tariffs have only one standing charge that covers both electricity and gas for dual fuel customers.

Say goodbye to the Big Six

If you have heard of any energy provider in the UK, it was probably one of the Big Six companies. As the name suggests, they are (by far) the six biggest electricity and gas suppliers in the UK. They currently hold about 75% of the UK market.

If that number sounds impressive, be aware that as recently as 2009 they held a full 100% market share. Since then, their customers have left in droves, leaving the Big Six companies scrambling to adapt to the arrival of new, independent energy suppliers.

In the near future, the Big Six may become the Big Five, as npower will be absorbed by Eon. For several years, npower has suffered customer losses and poor financial results, and the current unification comes after a scrapped merger with SSE.

a masked thief running off with a bag of loot

As of now, none of the Big Six members have been able to compete with smaller suppliers in terms of price or customer service. Big Six companies are generally more expensive and, with the exception of SSE, are known for terrible customer service.

While you may be drawn to the more familiar name of companies like British Gas, it is a much better idea to seek out more information about unknown providers, which are almost certainly able to provide better service along with lower prices.

Energy tariffs: finding the best price

Undoubtedly, the most important part of choosing your provider is finding the best price possible. But with a large number of suppliers, prices differing across regions and different types of payments and government schemes, that’s easier said than done.

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Switch the easy way.

Find the best price for your home’s energy in minutes!

Unless you’re an eagle-eyed energy expert with plenty of time to devote to researching energy tariffs, if you’re looking for the lowest price possible, the best thing to do is to call our energy experts.

a confused looking man in a thoughtful pose wearing blue

How long does it take to switch?

If you’re worried about how long it will take to switch, don’t! The entire process is quick and simple.

First off, you’ll want to do a bit of research into different energy providers, as well as the energy market in your area. If that sounds intimidating, relax, we’ve got tons of energy guides to help you on every detail. Give yourself between an hour and a couple of days to look into details, depending on how much background information you prefer to have.

Short on time? Our energy experts can help you find the best tariff for your home or business in just a few minutes. And you can use our comparison tool to quickly see everything the market has to offer.

How long will it take to begin service with your new provider after you’ve made the switch? It should take about 21 days. That includes a 14-day ‘cooling off’ period where you can cancel your new contract before it begins.

All in all, the entire process should only take between 20 days and a month, and only takes a few minutes on the phone to get the ball rolling.

Will my energy supply be interrupted?

If you’re preoccupied with thoughts that a switch will cause your electricity or gas supply to be interrupted, you can relax. Your energy supply is guaranteed, regardless of which energy company provides your gas and electricity.

In fact, the only change you’ll notice is that your energy bills will come from a new supplier, and if you switch with Selectra, you can be sure that the cost will go down as well.

How to avoid double billing

Most people considering switching energy providers are nervous about one thing: Having to spend a month or more paying two separate energy providers. So how can you avoid this happening? The easiest way possible: do nothing!

a pile of coins flying towards a document with a flame symbol

The idea of being double charged is actually a myth. Once you make the switch, the change-over date where you will be billed by your new supplier is agreed on by both energy companies. That means you won’t be charged by two companies for the same energy usage.

A few independent suppliers and advance pay tariffs will charge you before the start date on your contract, but those bills will be discounted to avoid overpaying.

If you do think you’ve been charged by two companies for the same energy, you should contact the Energy Ombudsman.

Factoring in the fuel mix

First off, what is a fuel mix? It’s the specific mix and percentage of fuel sources for an energy provider. Normally the fuel mix consists of a certain percentage of renewable (or green) energy, natural gas, coal, peat and nuclear power. For example, a provider that provides 100% wind power, such as npower, would have a fuel mix of 100% renewable energy.

Although there are several low cost energy suppliers who supply 100% renewable energy, the national average is still far from 100% green. As you can see in the graph below, the average fuel mix is made up of 41.2% natural gas, 7.6% coal and 20% nuclear power, all of which are non-renewable energy sources.

Luckily for the environment and those of us living in it, AKA everyone, the cost of producing electricity from renewable sources has lowered over time; they’re now on par with the cost of producing electricity from natural gas and other non-renewable sources. This has caused more and more electricity suppliers to provide 100% renewably sourced tariffs.

If the environment is something you care about, be sure to take a look at your potential supplier’s fuel mix. Even if you’re not willing to pay a premium, odds are you can get a low price alongside a green fuel mix.

Collective energy switch - what is it?

two happy men embracing and holding money

You may have heard of a collective energy switch, but may be unaware of exactly what it is. The basic idea is for a group of energy customers to come together as a group and bargain with energy suppliers collectively to get a special deal for a better contract.

Not just any group of people can do this however, you should only join a collective switch with a trusted intermediary, like a local council or a reputable website like Money Saving Expert. You must be a member of the organisation or site, but that can be as simple as subscribing to an email newsletter.

Why do these intermediary organisations take time to negotiate a better deal? For money, of course! Money Saving Expert for example, is paid £60 per customer, and every customer gets £30 of that amount!

The process of the switch takes about three weeks, but it may take longer to receive the cashback money, around three months.

What if I have a prepayment meter?

If your home has a prepayment gas or electricity meter, you unfortunately will have less options when it comes to finding a new gas and electricity supplier and may be looking at higher prices. This is especially egregious as many prepayment homes are at higher risk for being in fuel poverty.

Some providers, like Toto Energy, have historically had more competitive prices. Still, as tariff rates change over time, the easiest way to be sure you’re not paying too much on your prepayment tariff is by simply giving us a call.

Energy switch cashback and other rewards

a pile of coins next to a piggy bank

Looking for a cashback reward? Several energy suppliers offer a cash incentive, just for switching to their tariffs!

While some suppliers consistently have a reward program for switches, others offer rewards for a limited time basis.

How much can you earn with an energy switch cashback? Most suppliers or intermediaries offer between £20 and £30 for switching to a dual fuel tariff. They generally offer between £10 and £15 for a single fuel tariff.

While a few extra notes in your wallet is certainly nice, it’s important to not base your decision solely on cashback rewards, as you may end up paying more in the long run with steeper tariffs!

In a different but related scheme, some energy providers offer a referral bonus to their customers. That means that existing customers can earn money by recommending their supplier to friends, family and other acquaintances who ultimately end up switching.


Trying to choose your energy provider from a list of companies you’ve never heard of can seem intimidating. However, switching can save you hundreds of pounds throughout the year and doesn’t have to be a trial.

The important thing is to take the time to do the research, or talk to an expert you can trust. Our energy consultants can help you cut through the nonsense and promotional hype to make sure you get the best tariff possible for your home.

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Affect Energy is a pretty new name on the UK energy market. If you haven’t heard it before, it’s definitely worth paying it some attention. The supplier consistently receives great reviews for its customer service and offers very reasonable prices. In 2018, it was bought by Octopus Energy, but remains selling energy tariffs under its own name. Read on now to find Affect Energy reviews, learn more about the supplier and see if it could be a good fit for you.

Despite some recent trouble with Ofgem, Avro Energy is still in business and offering affordable energy tariffs to consumers across the UK. A supplier that aims to cut the fancy phrases and offer a simple service, it could be the small-time, no-nonsense energy supplier you’re looking for.

Initially only supplying gas to the Midlands, now Better Energy is a UK wide supplier. They have recently acquired the licence to supply electricity to their customers, but it will be some time before this service is available. Their motto is “Same Energy, great price” and aim to provide a simple, uncomplicated service to their customers. Due to their small size and low overheads, they pass on lower prices to their customers.

Boost is an exclusively pay-as-you-go energy supplier in the UK. It’s an offshoot of Ovo Energy and was born from Ovo’s Smart PAYG+ branch. Boost is all about using technology and new features, like their Winter Wallet, to make managing and paying for energy use more efficient. Claiming to have the ‘first truly smart prepayment platform’ via their smartphone app, their goal is to eliminate having to travel to top-up energy cards. Read on to find out if they're really fulfilling those goals, or are just one more PAYG supplier.

Breeze Energy was a small supplier that opened its doors in 2015 and unfortunately closed down in 2019. The wanted to help customers save money on their gas and electricity bills by providing them with energy-saving tips and a cheap tariff.

Brilliant Energy burst onto the energy scene in 2017 and is a part of the German Stromio Energy. The budget electricity and gas suppliers claims to provide fuel at affordable prices. Let’s see if they are the light at the end of the tunnel or just a flash in the pan, when it comes to customer service and reliability.

Bristol Energy is a young supplier started by Bristol City Council. It aims to supply affordable energy across the UK, while its profits go back into its local community. With a better than average fuel mix, good customer service and reasonably priced tariffs, it’s starting to challenge its fellow small suppliers. If the sound of supporting a community by paying your energy bills appeals to you, Bristol Energy could be the answer.

Providing gas and electricity to about 12 million households in the UK, British Gas is unquestionably the UK’s largest energy provider. With a long history of providing energy to British homes, the company has transformed beyond all recognition since its beginnings in the early nineteenth century. Nowadays, what does British Gas have to offer in the increasingly competitive world of supplying energy?

Budget Energy is a small supplier from Northern Ireland. They provide electricity to thousands of homes, farms, and businesses across NI.

Bulb Energy is a startup based in London and aims to provide green energy without the premiums. A full 100% of its electricity and 10% of its gas come from independent green energy generators in the UK. The company has grown dramatically in recent years and currently supplies over 850,000 homes in the UK. If you’re looking for an ethical company that values customer service, transparent tariffs and which is concerned about the environment, then Bulb Energy might be a good choice.

Coop Energy claims to be a different type of electricity and gas supplier. Unlike other UK energy companies, Coop (also known as Cooperative Energy) is part of a larger Cooperative, meaning the company is owned by coop members, rather than large foreign corporations like most Big Six companies. But is Coop Energy really revolutionary or just one more big energy supplier? We’re delving into the supplier’s history, services offered, fuel mix, prices and more to find out.

Daligas is one of the few energy suppliers in Great Britain that only serves gas customers. Based in London, Daligas was founded in 2012 by a group of experienced professionals. Daligas offers both home and business tariffs, but with the lack of electricity on their menu, some customers are certainly put off as to the complication of having two seperate energy companies supplying their household.

E Energy, having only begun trading a few years ago, have already acquired a customer based of over 200,000 customers. This gives them a market share of around 0.36% of the British energy markets. They pride themselves on their excellent customer service abilities, with all their call center agents located in Great Britain. They also have zero exit fees on their tariffs, instead, they have rewards for those people that stay with the company. E Energy is also a prepayment-only supplier.

Ebico is not a well-known name in the UK energy market, but if you want a supplier with a social conscience, it could be the one for you. A not-for-profit provider working hard to help those who struggle to pay their energy bills - whilst also offering 100% green electricity - Ebico is a small energy supplier with big ambitions. Read on to learn more.

Economy Energy is a UK energy supplier that stopped trading in January 2019. Its customers and contracts were absorbed by fellow mid-tier energy provider Ovo Energy. If you’re a former Economy Energy customer confused on exactly what has happened and how it will affect your energy supply, don’t worry. We have all the details on how the energy company went astray as well as advice on what former Economy customers should do next.

Ecotricity is the world’s first green energy company. Founded in 1996 with just a single windmill, it now supplies green gas and electricity to around 200,000 homes in the UK. What’s it offering on the market that makes Ecotricity so popular? Find out what that is and how to get a piece of the good green stuff.

Providing gas and electricity to about 4.9 million residential customers in the UK, EDF Energy is currently the UK’s fourth-biggest energy supplier with 9.6% market share and the largest provider by volume in the nation. However, today’s energy market is increasingly competitive, so what does EDF Energy have to offer the informed consumer? Read on for all the essential information about this Big Six supplier.

Electric Ireland are one of five electricity suppliers in Northern Ireland. They were a business-only energy provider until 2015, when they began supplying domestic electricity. They’re known for business solutions and competitive domestic prices. Unlike in the rest of the UK, domestic gas and electricity suppliers are separate in NI, meaning EI do not supply gas to households.

Engie is a relative newcomer to the domestic market, having only started providing energy to UK homes in 2017. You may not have heard the name before, but behind this seemingly new player is a multinational with a long history of energy generation and supply. Read on to find out if Engie could be the right supplier for you.

Enstroga is the UK arm of a German subsidiary which was founded in 2012. It has branches in Germany, Portugal, Austria, Spain and the Netherlands.

German-owned EON is one of the Big Six gas and electricity suppliers to households and businesses across the UK and abroad. They're the most significant investor-owned energy company in the world. Will they keep their top position given their high prices and poor customer service? Find out what they have to offer you and whether it's worth switching to them.

Extra Energy certainly had a lot to shout about. It launched in April 2014 and was the fastest-growing energy supplier in the UK by 2016, attracting 29.4% of all customers that switched gas and electricity suppliers. Sadly, Extra Energy ceased trading in 2018. Read on to learn more.

Fairerpower is an energy supplier set up by Cheshire East council to supply gas and electricity to Cheshire and Lancashire residents. Fairerpower works in partnership with Ovo Energy; Fairerpower sets the tariff and promotes the service, while Ovo Energy takes care of supplying the electricity, metering, billing and collection.

Firmus Energy is a Northern Ireland based company specialising in natural gas. The company also promotes greener energy. While the company does supply electricity to business customers, it has yet to launch a residential customer electricity offering.

As is generally expected nowadays from smaller energy suppliers, First Utility performs pretty well on the customer satisfaction scale. Out of the 31 British energy suppliers that were reviewed in the 2017 Which? Customer service survey, First Utility came joint 12th, scoring well above all the Big Six suppliers. According to said survey, First Utility scored equally in all areas of the test, coming out with 4 out of 5 stars on all sub-categories, with 68% overall satisfaction.

Fischer Energy claims that it is powering the future. Although not new to the energy Market, Fischer Energy is a new gas and electricity supplier which has just one Fair Tariff and prides itself on its customer service.

Flow Energy is a UK energy provider founded in 1998 and is based in Ipswich. They are a relatively small but fast-growing company providing energy to over 250,000 homes. Their energy mix has a focus on renewables, with 50% of energy coming from renewable sources. Apart from providing energy they have developed some innovative products such as the Flow Energy Boiler and a range of Smart Home products to help reduce your energy bills.

GB Energy Supply is a small gas and electricity provider that was taken over by <a href="/energy/providers/cooperative-energy">Co-operative Energy</a> in 2016. Since then they’ve built their customer base up to 140,000 homes across Great Britain. They claim to keep their outgoings at a bare minimum in order to provide energy efficiency and the cheapest possible deals for their customers, but in actuality, they don’t ever seem to be anywhere near the list of cheapest energy tariffs in the country.

GnERGY is a small community run energy supplier run by former Gurkhas which promises to deal with your switch with military efficiency.

Good Energy was the first energy company to provide 100% renewable Energy. The Good Shopping Guide has named the company as one of the world’s most ethical companies.

Great North Energy is one of the only not for profit suppliers in the UK. The company is run by Doncaster Council in partnership with Robin Hood Energy. Its main aims are to help residents in Doncaster reduce fuel poverty and help people with rising electricity and fuel prices. It has no paid directors and no shareholders which means that all the profits from the company are reinvested in paying off the start-up loans.

Receiving green energy in your home and doing your part for the planet is quite easy nowadays as many providers offer 100% renewable electricity tariffs. Perhaps you want to do a bit more? Well, Green Energy UK offer green gas, a green alternative to natural gas made from biodegradables.

Green Network Energy entered into the UK market in 2015. With around 300,000 customers in the UK in 2019, they hope to earn revenues of £300 million. In their home country of Italy, they’ve become one of the country’s biggest suppliers since opening in 2005 and have reported sales of $2.4 billion (£1.8 billion).

Green Star Energy is a newcomer in the UK energy market. It launched its service to UK residential customers in October 2013 as an expansion of its US holding company; Just Energy Group Plc. With almost 2 million customers across North America, it’s keen to build on its success in the UK, boasting its green energy tariff as “100% renewable and affordable”. But how green and how affordable is it? Customer reviews on cost and service are a mixed bag, so the question remains... Will it retain the success built in the US, or pale in comparison with its UK energy competitors?

Guernsey electricity is actually the only electricity distributor on Guernsey Island and has been supplying residents with electricity for over 100 years. While the company used to generate electricity on-site, they now get it from Jersey and France through cables.

Guernsey Gas is located at The Energy Centre in Guernsey and provides gas services and connection to the inhabitants of the island. On Guernsey, the company goes by the simple moniker "Gas", and in fact, distributes LPG through its systems.

Haven Power is a business energy supplier based in Ipswich, Suffolk. It was set up in 2005 and offers fixed and variable rate tariffs with an option for renewable energy so your business can be part of the low carbon economy.

Igloo Energy is an energy company from Southampton which has been designed for digital natives and which works in harmony with your phone to make managing your energy easier.

Iresa Energy was once the UK’s cheapest gas and electricity provider. However they have infuriated customers by hiking their monthly direct debits unexpectedly, taking one off payments and has a backlog of complaints to deal with. This prompted Ofgem to intervene, and as a result, Iresa has been forced to continue not taking on any new customers in 2018.

iSupply Energy is a small British energy supplier that was bought out by Swedish energy giants, Vattenfall, in June 2017. They are based on the south coast of England in Bournemouth, initially offering a simple electricity tariff, but have since expanded to be the dual fuel provider for over 120,000 customers.

The Jersey Electricity Company or Jersey Electricity is a public limited company which is the sole provider for electricity in Jersey.

Jersey gas is the sole provider of gas in the channel islands. For over 175 years, gas has had an increasing influence on Channel Islands life. From as early as 1820, it was used to light the streets of the Islands and was later utilised in local homes, proving to be a convenient fuel for cooking and water heating.

LoCO2 Energy ltd, which has now joined Solarplicity, was an Electricity supplier which focused on supplying energy from low carbon resources in the UK. It formed part of a group of energy production and distribution companies owned by Bob Middleton.

Lumo Energy UK began life as a price comparison website designed to help customers find the best deal on the market. However, Lumo, which is now an app-only energy supplier, has its own tariffs which are low cost due to low overheads.

M&S Energy is a part of the Marks and Spencer franchise and is one of Great Britain’s growing smaller energy suppliers. M&S Energy receives their gas and electricity supply through Big Six member, SSE. Their pricing structure is more or less the same, but their branding and customer service is completely separate. They currently have a customer base of just over 200,000, which gives them a market share of about 0.36%.

Manx utilities are one of the leading providers of electricity and gas on the Isle of Man. They source energy inputs via three independent supply chains; natural gas, liquid fuel and electricity imports. They also generate electricity on Island and also procure electricity using an AC power interconnector marine cable. The company provides natural gas via gas pipelines.

Nabuh Energy’s goal is to help people who are on prepayment meters get a better deal on their gas and electricity. It claims to be the energy company with a heart and here at Selectra we wanted to find out if they lived up to their slogan.

Npower was, up until recently, one of the biggest gas and electricity suppliers in the UK. Unfortunately, its poor customer service and uncompetitive prices were among the factors that sounded its death-knell. Npower will be no more and will soon merge with a Big Six rival; Eon. Find out how Npower went from riches to rags and everything else you need to know as a Npower customer.

Octopus Energy is an independent British gas and electricity supplier that’s making big waves in the UK energy market. Offering a 100% green electricity tariff and the option to carbon offset your gas, its aim is to create energy that is ‘fit for the future’. While at the same time striving to make the eco-friendly choice ‘the easy choice’.

One Select is a new energy company in the UK market from the same team who launched Energieflex in Holland in 2014, a major supplier in the Netherlands. They focus on fairness, simplicity, control and innovation.

Opus Energy is the all-green business energy provider supplying gas and electricity to over 340,000 business premises across the UK. Find out about Opus Energy’s tariffs and services, how it compares to other business providers and how its customers rate it.

Our Power is a socially responsible energy provider and operates as a not-for-profit organisation and are one of a growing number of such energy companies appearing in the UK energy market. Their pledge is to provide great customer service and to keep your electricity bill low. Our Power energy is based in Edinburgh and in the first half of 2017 they got 80,000 people to switch their energy provider to them.

Outfox the Market have entered the UK market with their slogan “no frills, just low bills.” They sell wholesale energy to their customers making 0% profit on the actual energy they sell and charging a membership fee based on how much electricity customers use over the course of a year.

Launched in 2009 and with a focus on clean energy, Bristol-based Ovo Energy is the UK’s biggest independent energy supplier. After acquiring Economy Energy and SSE’s home energy business in 2019, Ovo has become the second-largest energy provider in the UK, just behind British Gas. Read on to find out what Ovo Energy can offer you.

Ever thought that you could run your energy company better than the fat cats who get paid millions to do it? Well, that’s exactly the opportunity that People’s Energy wants to give their customers. Read on to find out how!

PFP Energy (Places for People Energy) are an ex not-for-profit energy supplier. Previously they worked in conjunction with Places for People and reinvested all of their profits in social projects. However, now they are run as a private company. They want customers to feel in control and keep their billing simple and easy to understand.

Power NI is the chief electricity supplier in Northern Ireland, covering around 60% of its internal domestic market - that’s a little under half a million customers - and having operated nigh on 90 years.

Powergen was one of the original energy companies to enter the deregulated energy markets following privatisation in 1989. It was originally wholly owned by the UK government until it was sold off to private investors in 1991 and then again in 1995. Like all of the Big Six companies that exist today, Powergen was formed through the acquisition of the previous regional monopolies, the electricity boards.

Powershop have migrated from New Zealand and plan to completely change the way you think about your gas and electricity bill. This Birmingham based supplier claims to put your power back into your hands -both literally and metaphorically.

Pure Planet Energy is a new energy company in the UK market by the team who founded Virgin Mobile. They claim to be an ethical energy company which uses 100% renewable energy and 100% carbon offset gas. They are an app-only supplier and have a 0% markup on wholesale energy prices.

Robin Hood Energy is a not-for-profit energy provider owned and operated by Nottingham City Council. One of their primary focuses is helping to reduce and, eventually, completely get rid of fuel poverty, which is a problem that greatly affects many parts of Great Britain. They offer both residential and business tariffs to all areas of the country, despite operating out of a local council.

Sainsbury's Energy was a partnership between Sainsbury's supermarket the second-largest supermarket chain in the UK, and British Gas. Sainsbury’s claimed that they are entering the utilities market in order to support the UK’s transition to a greener future and help customers reduce carbon emissions. It boasted that it was bringing energy back to the high street. All customers have now been transferred to British Gas.

Scottish Power is one of the UK’s six largest gas and electricity suppliers. It delivers gas and electricity to over five million households and businesses. Find out exactly what the supplier offers, how much it charges for energy, and how its customers review it.

Shell Energy is a big brand that’s fairly new on the UK energy scene. Taking over First Utility in 2018 and rebranding to become Shell Energy in 2019, the supplier has a big customer base and a well-established service. It offers customers a good range of energy tariffs, lots of smart technology to make your home more efficient and 100% renewable electricity.

Based in London, So Energy is a 100% green independent energy supplier which began operating in the UK in 2015. So Energy UK believes that contrary to customers current impression, energy companies can be simple, honest and good value.

Solarplicity was one of the leading suppliers of renewable energy in the UK. They used only 100% renewable energy from biofuels, hydropower, wind and solar. Solarplicity were heavily involved in social projects and in a number of schemes to help end renewable energy fuel poverty and to promote solar panels.

Southend-on-Sea, or simply 'Southend' as it is commonly referred to, is a seaside town in Essex. It is situated on the estuary to the River Thames, leading to Central London. Its population is around 181,000. Southend's incumbent suppliers are EDF Energy for electricity and British Gas for gas.

Like many of the utility companies that emerged after 1990, Southern Electric was formed from its area electricity board, ‘Southern Electricity Board’. In 1998, it merged with Scottish Hydro-Electric plc, a company in a very similar situation, to form Scottish and Southern Energy plc, now trading as the shortened, ‘SSE’. SSE are now the UK's largest producer of renewable energy, their production of which, has, however, taken a reported drop.

Spark Energy were a small independent supplier formed in 2007 to address a gap in the market for supplying tenants. They worked with top UK letting agents to try and make the process of moving into rented accomodation as simple and stress free as possible. They supplied over 350,000 homes in the UK until they closed in 2018.

SSE is one of the UK’s biggest energy suppliers. In addition to supporting renewable energy and community events, they’re known for being the best of the bunch, with lower energy prices and better service than their Big Six competitors. But do they really deserve the hype? Read on to find out.

SSE Atlantic was previously known as Scottish and Southern Energy until it was bought by SSE in 2009. SSE is the second largest provider of energy in the UK and also operates as Swalec, Scottish Hydro and Southern Electric. It is classed as one of the big six suppliers in the UK.

Swalec is the South Wales Electricity board supply and distribution company that was bought by SSE in 2000 for £210m. It is now most famous for the stadium in Cardiff which carries its name.

Together Energy is Scotland’s young but fastest-growing energy company, supplying over 60,000 customers across the UK. Having been in the market since just 2016, does it have what it takes to be the UK’s up-and-coming supplier worthy of making Scotland proud? Keep reading to find out if their tariffs, services and credentials will get them to the top.

Tonik Energy is an independent <strong>gas and electricity supplier based in Birmingham, England. Not only does it have some of the cheapest energy tariffs on the UK market, but all of its tariffs use green energy produced from renewable sources such as solar power, wind power and biogas.

Toto Energy were an independent energy supplier based in Brighton, England until they closed in 2019. Having only been trading for just a little over a year, Toto Energy acquired a rather sizeable customer base, offering tariffs for both direct debit and prepayment customers. They also developed their own tariff payment method, the ‘Smart Flexi Saver’.

USIO Energy was a newcomer to UK energy market who aimed to be the first Energy company in the UK to comply with new directives before smart meters become mandatory in 2020. They were hoping to install smart meters as standard and use 100% green energy.

Utilita Energy is an independent energy supplier based in the UK. The company's unique selling point is their Prepayment Smart Meter, which can be topped up remotely without a key or fob. As of January 2018 they held a 2% market share and supplied gas and electricity to approximately 600,000 customers throughout the UK.

Utility Point is an independent energy supplier, based in Poole, that was launched in 2017. Although extremely new to the British energy markets, with customer numbers pretty low, their mixture of rock-bottom prices and top quality customer service has not gone a miss. Their average cheapest tariff can be upwards of £300 cheaper than Big Six suppliers.

Utility Warehouse is the largest gas and electricity supplier outside of the big six. It rivals their customer numbers with more than 600,000 clients after its acquisition of Electricity Plus and Gas Plus from Npower. They claim they don’t waste money on advertising, preferring to have their name spread by word of mouth and their authorised distributor network.

Many people feel trapped paying high prices on prepayment meters. White Rose Energy, set up by Leeds City Council, aims to help customers out of fuel poverty by providing them with a means to reduce their bills or change to direct debit.

Woodland Trust Energy was a partnership between Ovo Energy and The Woodland Trust. For each customer who contracted Energy with Woodland Trust Energy Ovo donated 2.5% of each annual bill to the Woodland Trust to protect woodland around the UK.

Yorkshire Energy are an independent local supplier who is aiming to be the best rather than the biggest. They focus on giving their customers the best service possible while keeping things simple in terms of tariffs.

Zebra Power is an independent energy supplier based in Manchester, England. Having only started trading in 2016, it has already made quite a name for itself, having a regular spot in the cheapest tariffs on the market. It has had a name change over the past couple of years, having started its operations under the name ‘Bor Energy’.

Zog Energy is an independent gas-only supplier that was founded in 2013. While its name may sound out of this world, Zog was founded by two Queens Award-winning engineers, Andrew Cleveland and Tony Chester, as a response to the bad customer service and high prices that they found in existing utility companies.