UK Energy Providers in 2021

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Energy bills in the UK are expected to rise going forward, so it is important for energy consumers to find a supplier that can fulfill their energy needs without costing a fortune! We aim to provide an impartial comparison of all active energy suppliers in the UK based on a number of factors including services offered, sustainability and customer reviews.
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Our services utilize national averages for our pricing evaluations of each supplier and their tariffs. For the most accurate information, call our experts who are ready to save you both time and money.
  • Scottish Power

    Scottish Power is a member of the UK's "Big 6" energy suppliers, meaning that they are one of the largest suppliers of energy in the entire UK. They currently provide power to around 5 million customers and have no plans of slowing down any time soon. They are one of the original suppliers of green electricity, which they produce from a number of sources including their 22 UK wind farms.

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  • Entice Energy

    Entice Energy is an energy supplier based out of Nottinghamshire that focuses on providing transparent bills, simple tariffs, and a customer-first approach. At the moment they only offer two tariff options, but considering the success and positive reviews that they've received this may change in the future.

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  • Together Energy

    Together Energy is a rapidly growing new energy supplier based out of Dunbartonshire. It first launched in late 2017 and has since managed to obtain around 150,000 customers around the UK. Despite not having the most environmentally friendly energy supply, they are a very socially active contributor to social causes in the UK, particularly providing support to areas of poverty.

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  • Bulb Energy

    Launched in 2013, many still consider Bulb to be a rising star in the UK energy market. Since then they have acquired around 1.5 million customers, which they provide 100% renewable energy to.

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  • Bristol Energy

    Bristol Energy was started in 2015 by the Bristol City Council with the aim of providing affordable energy across the UK. They have a focus on giving back to local communities, which is where they invest any profits that they obtain. Since they started they've grown considerably and have amassed around 102,000 customers.

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  • M+S Energy

    M+S Energy, or Mark and Spencer Energy, was launched in 2008 by the recognizable retail brand Mark and Spencer. Since then, they've actually had a significant impact on the energy market in the UK. Today, they are in an active partnership with Octopus Energy, in which M+S Energy is still responsible of bringing in their own customers but the actual energy itself that their customers use is sourced from Octopus.

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  • Igloo Energy

    Even though Igloo Energy was launched only in 2017, but have already managed to accumulate over 100,000 customers. Their success can be attributed to a number of factors included their use of new technologies, fair prices, and a referral program that incentivized their customer base to spread the word.

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    • EDF Energy

      EDF Energy is one of the larger energy suppliers currently in the UK, they are a subsidiary of one of Europe's largest energy suppliers, the French state-owned EDF Group. They entered the UK market in 2002 and have since earned around 5 million customers, much of their success can be attributed to their clean energy and competitive prices.

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    • People's Energy

      People's Energy was created in 2017 to be different from other energy suppliers in the UK, rather than being owned by a large parent company, the company is ostensibly "owned" by its own customers. Their saying is that they are "set up by the people for the people", and as a result they've pledged around 75% of their profits to be distributed among its customers.

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    • Zog Energy

      Zog Energy is an award winning energy supplier in the UK that only provides gas for their customers. While they received licensing to also supply electricity in 2017, they've since remained a gas only provider to focus on the needs of their existing customers. They market themselves as have extremely competitive pricing and a very simple and straightforward switching process for customers interesting in switching their gas suppliers.

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    • Zebra Power

      One of the smaller energy suppliers in the UK, Zebra Power is an independent company with goal of making energy simple and easy to obtain. Their claim is that energy should be black and white, like a zebra, with no grey areas where consumers are often taken advantage of by other suppliers.

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    • E Energy

      E Energy is an energy supplier in the UK that focuses primarily on providing energy to homes with prepayment meters, while they do offer tariffs to customers with credit meters it is not the core of their business. They claim to provide customers with straightforward & no-nonsense tariff plans in order to save customers both time and money.

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    • Ecotricity

      Ecotricity is one of the most environmentally friendly energy suppliers in all of the UK. Founded in 1996, they began their pledge to supply green energy long before the energy market started to trend towards renewable energy. Today, they offer what they refer to as vegan energy, which means no animals or animal byproducts are used in the production of their energy.

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    • Enstroga

      Enstroga is an energy supplier that was first introduced back in 2015 with a focus on entering the UK market to provide low energy prices and quality customer service. Before entering the UK market in 2015, Enstroga had already expanded most of continental Europe including Spain, Germany, Portugal, and Austria.

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    • Orbit Energy

      Orbit Energy is a rather small energy supplier that started in 2018, customers have said that they provide a more personal experience and quality customer service. They have had success with their assortment of tariff options which focus on variable rate plans that avoid contracts and longtime commitments.

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    • Pure Planet

      Pure Planet is a digital only green energy supplier that provides 100% renewable electricity and carbon off-set gas at competitive prices. Founded in 2017, Pure Planet is a relatively new energy supplier to the UK market,however they have found success marketing themselves as having fair and transparent pricing for energy that won't hurt the environment.

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    • Click Energy

      Click Energy mainly operates in Northern Ireland, where they market themselves as a friendly and transparent electricity that cares about their customers' well-being. Despite being a relatively small energy supplier they are quite green and only offer 100% renewable energy to their customers.

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    • COOP Energy

      COOP Energy is an environmentally conscious energy supplier in the UK that aims to support local, small town initiatives throughout the UK. While COOP Energy customers now have their electricity and gas supplied by Octopus Energy as a result of an agreement, COOP Energy is still responsible for bringing in their own new customers and supporting them.

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    • Boost Energy

      Boost Energy is a subsidiary of OVO Energy, it was first launched in 2017 in order to help fulfill the needs of OVO Energy's diverse customer base. They provide energy exclusively to homes uses Pay As You Go (PAYG) meters and as such only offer prepayment tariffs plans.

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    • Good Energy

      Good Energy is a 20 year veteran energy supplier in the UK that has survived intense competition. They have remained an active supplier through their reasonable tariff prices, renewable energy offers and consistent customer service.

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    • ESB Energy

      ESB, or the Electricity Supply Board, is the state provider of energy in the Republic of Ireland, but has recently began to have an increased presence in the UK energy market. Their goal as a provider is to supply renewable energy to customers at "great value", while doing as much as they can to reduce the impact that energy use has on the environment.

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    • Utility Point

      Utility Point Energy is a relatively new supplier that offers gas and electricity to customers across the UK. Based in Dorset and eager to attract new customers they market themselves as a supplier with low-cost tariffs and a commitment to customer service.

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    • Outfox the Market

      Outfox the Market is a relatively new and small energy supplier that offers very competitive pricing making them one of the cheapest energy suppliers in the UK. They offer green energy to their customers as well as a number of tariff options to give their customers options when choosing their energy plan.

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    • SO Energy

      SO Energy is a London based supplier for gas and electricity that offers a "low price guarantee" to their customers. Their aim as a energy supplier is to be among the cheapest 10% of all energy suppliers in the market and they do so by offerings only one simple and straightforward fixed rate tariff.

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    • AVRO Energy

      AVRO Energy is an energy supplier in the UK that focuses greatly on simplicity. They only offer dual fuel plans to their customers in order to keep energy bills basic and straightforward. They first began in 2012 and have signed managed to gain around 100,000 customers.

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    • Utilita

      Despite not being a member of the UK's "Big 6" energy suppliers, Utilita has built a very positive reputation for themselves among their customers. They are one of the leaders in the industry in terms of cutting-edge technology, such as smart meters, to give customers better control over their energy usage. First founded in 2003, Utilita has managed to gain around 800,000 customers.

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    • OVO Energy

      OVO Energy is among the largest energy suppliers in the UK with over 5 million customers as of 2021. They are very active in the fight against climate change and as a result are responsible for planting over a million trees since they were founded in 2009. They offer a range of tariff choices for their customers to choose from and even provide upgrade options in their tariffs for customers aiming to be even more green.

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    • Shell Energy

      Shell Energy possesses one of the most iconic and recognizable logos on the planet, and aside from being well know they are also a competitive energy supplier in the UK. They currently have around 700,000 customers and offer a wide variety of deals to their customers. These deals include special rewards, renewable energy, and discounts amongst other things.

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    • E.ON

      E.ON is one of the UK's largest energy suppliers and one of the "big 6", with over 3.5 million customers across the UK. They offer 100% renewable energy and 100% carbon offset gas to their customers and do so at competitive prices. Their focus has been on green energy since they were formed in 2000.

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    • Utility Warehouse

      As one of the most established energy suppliers in the UK today, Utility Warehouse has around 650,000 customers that they provide energy to. They offer a wide range of services beyond energy such internet, landlines, and mobile phone services that they factor into their bundled offers. In that sense Utility Warehouse acts as a one-stop-shop for many customers.

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    • Octopus

      Octopus Energy, one of the newest members of the UK's "Big 6" energy suppliers currently provides power to roughly 2.5 million customers. Founded in 2015, Octopus Energy has had tremendous success by providing what many say to be great customer service and fairly prices tariffs. They are also among one of the greenest energy suppliers in the UK, using 100% green electricity and offsetting as much gas as possible from their customers' usage.

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    • British Gas

      British Gas is one of the largest energy suppliers in the UK. As one of the big 6 suppliers, they provide energy to millions of homes throughout the UK. They offer a wide range of tariffs to cover the needs of their customers.

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Energy suppliers: how many are there, and who’s the best?

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The UK energy market is complicated. If it wasn’t, we would be out of business. So, between the dozens of energy suppliers in the UK market, you probably ask yourself: Which supplier is the right one for me? As there are many fish in the sea, it is possible that there will be many that are suitable to your needs; and at Switch Plan we aim to narrow that decision down for you. So, in this article, we will explain what to look out for, who the UK energy suppliers are, and how you can make the best informed decision when switching energy suppliers.
Last update: September 2021

As you may have heard on the news, the UK energy market is currently under an immense amount of stress as a result of a global gas shortage driving up costs and putting several energy suppliers out of business. To learn more about this and stay updated on a daily basis you can read our page on the UK energy crisis.

According to the energy watchdog Ofgem there are a whopping 57 active energy suppliers across the UK.

How many UK energy suppliers are there?

Some of these, however, are subsidiaries of larger companies and groups. OVO Energy, most notably, owns a number of energy suppliers in the UK including Spark Energy, Boost and (its biggest and most recent acquisition) SSE. It is important to thoroughly compare energy suppliers.
UK energy suppliers

What’s the difference between energy suppliers in the UK?

In terms of the energy they provide, absolutely nothing. All the UK’s suppliers distribute the same gas and electricity through the same networks of wires and pipes. But that doesn’t mean that all suppliers in the UK are the same. The difference lies in a number of factors. Of course, pricing plays a vital part in setting one apart from the other. But there are also other considerations like customer service, and how well they respond to a crisis or loss of supply.

The “Big 6”: Who are the Top 6 energy suppliers?

While there are 60 active suppliers in the UK, the lion’s share of the energy market is provided by the “Big 6” energy suppliers. Between them, these 6 companies supply 70% of the electricity supply and 69% of the gas supply in Great Britain.

The “Big 6” energy suppliers are (in no particular order):

But, as any savvy consumer will tell you, bigger doesn’t necessarily mean better.

It’s understandable that some might consider one of the “Big 6” a safe bet. After all, with millions of customers and enormous revenues they’re certainly well placed to provide outstanding service and good rates.

But really…

Who are the best energy suppliers in the UK?

One good thing about the vast number of energy suppliers in the UK today is that the increased competition can prove beneficial to consumers. There is a long list of energy suppliers in the UK. As suppliers scramble to engage new customers, they’re all trying to out-perform one another by presenting attractive new tariffs for consumers.

This means that savvy customers can use comparison services (like us) to trawl through dozens of tariffs to help you find the best one for your needs. But while the right tariff is important, it’s also important to choose the right supplier.

Who are the best energy suppliers in the UK? It really depends on your personal priority and what you value most in a supplier. Here, we’ll look at which suppliers meet the most common criteria for a good supplier…

Who has the best customer service?

Good prices aren’t the only thing we value in a supplier. We also want to know that they look after their customers, and that they can be relied on when you need them most.

Smaller energy companies often burst onto the market with offers and tariffs that are too good to miss. The trouble is that sometimes they go bust very quickly. Others do very well for a short time then disappear almost overnight. As such, many people gravitate towards the “Big 6” because they are perceived as more reliable. They may get bought out or subsumed by another supplier or group… but you don’t have to worry about them going bust overnight.

However, according to consumer ratings in 2020, the “Big 6” providers were among the lowest rated for customer service. The highest rated were as follows:

  • Octopus Energy
  • Bulb
  • Ecotricity
  • Good Energy
  • OVO Energy

Supplier Logo
Octopus Energy Octopus Energy Logo
Bulb Energy Bulb Logo
Ecotricity Ecotricity Logo
Good Energy
OVO Energy OVO Energy Logo

The UK's renewable energy mix

Who are the cheapest energy suppliers in the UK?

One supplier’s energy is completely indistinguishable from other’s. So, why pay more for it? When choosing an Energy Supplier, it’s likely that low prices and great value for money are high priorities for you.

So, let’s find out who the cheapest Energy Suppliers in the UK really are.

While costs may vary depending on your usage and the region where you live, these are the 5 providers with the cheapest tariffs on the market today:

  • Green Energy
  • Outfox The Market
  • So Energy
  • Octopus Energy
  • Robin Hood Energy

All of the above offer tariffs at costs significantly below the energy price cap of £1,126 per annum with savings of around £200-£300 pounds.

Who is the greenest supplier?

Consumers are growing increasingly conscious of the ecological impact of their choices on the planet we all share. As such, when choosing a supplier, they want to ensure that their energy mix is as renewable as possible. Fortunately, this is something that energy suppliers are growing increasingly conscious of, with many generating their own energy as well as supplying it. Scottish Power and SSE are two good examples of this, generating significant energy from their on and offshore wind farming infrastructures.

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However, you may be surprised that even the efforts of the “Big 6” pale in comparison to these smaller companies that have a strong focus on renewable energy. All of the following offer 100% renewable electricity as well as carbon neutral or renewable gas:

  • Bulb
  • Green Energy
  • Ecotricity
  • Good Energy
  • Tonik Energy

Business energy: who is the best business electricity supplier?

Most energy suppliers offer not only domestic tariffs but special commercial tariffs for businesses. While the “Big 6” tend to dominate in the world of commercial electricity, there are still a number of smaller energy suppliers in the UK with commercial electricity tariffs.

Bulb, Corona Energy, Robin Hood Energy, So Energy and Ecotricity all have competitively priced tariffs targeted at business users. On balance, Bulb is probably the best business electricity supplier with a good combination of affordability, renewability and customer service.

Thinking of switching to a Energy Suppliers in the UK? We’re here to help!

Are you thinking your Energy Supplier in the UK could be working harder for you? Let us help you with every aspect of your switch. Not only can we help you to find a new supplier and a new tariff, we manage every stage of your move end-to-end so that you can relax and focus on your great savings!

Call us today on 0330 054 0017. We’re available from 8.30 am – 5.30 pm.

To read more on this topic, check out these guides:

To see more energy suppliers, check out our list below:

Call us to switch your energy supplier for free!

0330 054 0017

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FAQ

Who are the best Energy Suppliers in the UK?

It really depends what you’re looking for in a supplier. After looking at wide range of suppliers for all shapes and sizes we recommend:

  1. Outfox The Market for affordability
  2. Octopus for customer service
  3. Bulb for Green Energy

Who decides what Energy Suppliers in the UK can charge?

Like most private enterprises, Energy Suppliers have a regulatory body. Ofgem ensures that energy companies act ethically and charge reasonably. They place a cap on how much energy companies can charge per year. This is currently set at £1,127 for both fuels. 

How many UK Energy Suppliers are there?

There are currently 35 active Energy Suppliers across the UK. If you thought that the “Big 6” were your only option, you may well find a better deal among the many smaller providers out there.

Is it easy to change Energy Suppliers?

Absolutely! Especially since we can manage every aspect of your switch from end-to-end, as well as helping you find the perfect supplier for your needs. 

Updated on 24 Sep, 2021

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