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With more than 50 domestic energy providers in the UK, there are plenty of options to choose from. However, with so many providers, it can also be difficult to decide which is the best one for your home. In this guide, we analyse the different gas and electric suppliers in the UK so that you can make an informed decision about which one to switch to.
According to the latest report from energy regulator Ofgem, there are 55 domestic energy providers in Great Britain as of the third quarter of 2020. These gas and electric suppliers can be broken down into the following categories:
Let’s have a brief look at how these gas and electric suppliers came to be.
The electricity sector was privatised in Great Britain in the early 1990s.The aim was to promote competition among companies and protect consumers’ interests. By 2005, just six electricity providers (known as the Big Six) supplied 99% of households.
This hold of 99% of the electricity market lasted until 2014 when smaller energy companies first started to come to the fore. In the years that followed, these smaller companies have continued to enter the market. One provider, OVO Energy, even acquired one of the original Big Six providers in January 2020.
For the third quarter of 2020, energy regulator Ofgem reported the electricity market shares as follows:
Note that Npower has since been absorbed by the Eon Group. All Npower customers will be transferred to Eon Next (a subsidiary of Eon) over the coming months. This acquisition makes Eon the second-largest electricity supplier in Great Britain, just behind British Gas.
National gas supplier British Gas was created in 1972. It was then privatised in 1986 under Margaret Thatcher. The 'Tell Sid' campaign encouraged individuals to buy shares in the company. With an IPO of 135p per share, British Gas was valued at £9 billion. At the time, this was the highest equity offering ever.
The same Big Six energy companies emerged to dominate the gas market in the UK. As with the electricity market, these gas companies supplied 99% of the gas market share until 2014. As of the third quarter of 2020, there are 53 gas providers in Great Britain. We display their market shares in the chart below.
The term ‘Big Six’ is used to describe Britain’s six largest energy companies. Traditionally, the Big Six energy providers consisted of the following companies:
These Big Six energy providers dominated the energy market until the end of 2019. In 2005, they held a combined market share across both the gas and electricity markets of 100%. In the third quarter of 2019, they had a combined electricity market share of 70% and a combined gas market share of 69% in Great Britain.
At the end of 2019, Npower was acquired by fellow Big Six provider Eon. In January 2020, SSE was acquired by OVO Energy.
There are now seven major players in the GB energy market. These companies all have more than 5% of both the electricity and gas market shares. In descending order, the following energy providers are currently Britain’s largest suppliers.
The Big Six energy providers aren’t known for supplying the best prices. You can often get a better deal with a smaller supplier.
In order to get the best deal, you’ll need to pay for your energy via direct debit. If you pay on receipt of a bill, you won’t need to have a new meter installed. If you need help switching from a prepayment meter, check out our guide on how to switch to a credit meter.
In the following table, we’ve listed the suppliers with the cheapest tariffs. Calculations are based on a medium-sized home in London with average consumption levels, which is 2,900 kWh of electricity and 12,000 kWh of gas. All of these tariffs have a direct debit payment method.
Supplier | Tariff | Monthly Cost | Annual Cost |
---|---|---|---|
Orbit Energy | Spring Vari-Save v2 | £82.04 | £984 |
Shell Energy | Energy May 2022 v3 | £82.08 | £985 |
Eon | Fix Online Exclusive v67 | £82.23 | £987 |
OVO Energy | Better Smart | £82.25 | £987 |
British Gas Evolve | Energy Plus Home Protection v13 | £82.27 | £987 |
Pure Planet | 100% Green 12m Fixed Mar21 v2 | £82.91 | £995 |
Zebra Power | Zebra Fixed Rate April 2022 v1 Paperless | £84.19 | £1,010 |
Bristol Energy | BE Simply Green April22 | £84.18 | £1,010 |
Together Energy | Green Together Fixed April22 | £84.59 | £1,015 |
So Energy | So Cedar Essential - Green | £85.21 | £1,023 |
Last updated: April 2021
While price is often the most important factor people examine when choosing an energy provider, it’s also a good idea to consider the quality of the company’s customer service.
Citizens Advice compares UK energy providers in terms of customer service on a quarterly basis. The organisation rates suppliers across the following categories:
You can find the best-rated energy companies for the first quarter of 2021 in the following table.
Rank | Energy Supplier | Rating |
---|---|---|
1 | Igloo Energy | 4.4 |
2 | M&S Energy | 4.4 |
3 | Outfox the Market | 4.25 |
4 | Co-Operative Energy | 4.15 |
5 | Octopus Energy | 4.15 |
6 | GoTo Energy | 4.06 |
7 | Co-Operative Energy | 4.05 |
8 | EDF Energy | 4 |
9 | Affect | 3.85 |
10 | Zebra Power | 3.75 |
Last update: April 2021
Each year, all energy companies are required to disclose the different fuels from which they source electricity.
Being with a renewable energy supplier does not mean that the actual electricity you consume is 100% renewable. All of the electricity that is generated is put into the same grid before being distributed to individual homes.
According to Ofgems latest fuel mix report (which covers April 2019 through March 2020), the suppliers listed in the following table provide 100% renewable electricity.
Bristol Energy | Good Energy | London Energy |
Bulb | Goto Energy | Octopus Energy |
Co-operative Energy | Green | Outfox the Market |
Economy 7 Energy | Green Energy UK | Pure Planet |
Ecotricity | M&S Energy | Shell Energy |
Foxglove Energy | Hub Energy | So Energy |
Note that Eon (which has acquired Npower) and OVO Energy (which supplies SSE) claim they now provide 100% renewable electricity. The fuel mix information for this most recent period (1 April 2020 to 31 March 2021) must be disclosed by 1 October.
There are just over four million households with prepayment meters in Great Britain. This represents about 15% of all households.
When choosing an energy provider, prepayment customers don’t have as many options as customers with credit meters. This is because even though all gas and electric suppliers must provide pay-as-you-go (PAYG) tariffs to current customers with financial difficulties, only providers with more than 50,000 customers are required to offer prepayment plans to new customers.
The following electricity and gas companies offer PAYG tariffs for new customers:
Only two energy providers provide prepayment tariffs with a fixed rate: EDF Energy and British Gas. If you’re not on a fixed-rate tariff, you risk the cost of your energy increasing with the wholesale market.
Some energy providers claim that prepayment energy plans are a great way to manage how much you spend. However, these tariffs tend to be much more expensive than the offers for customers that pay either via direct debit or by bill.
Gas and electric suppliers charge more for prepayment tariffs because they require more effort to manage than just simply taking automatic payments each month. For this reason, many small gas and electric suppliers have opted against providing prepayment tariffs at all.
From the following table, you can see that the cheapest PAYG tariff is more than £100 more expensive than the cheapest direct debit tariff per year. Both of the tariffs are provided by Orbit Energy.
Cheapest direct debit tariff | £984 per year |
Cheapest prepayment tariff | £1,093 per year |
In addition to domestic energy, there are also several providers that supply business energy. Unlike domestic providers, business energy providers don’t always publish their rates online. You will often need to contact the supplier to get a personalised business quote.
To find the right plan for your business, you can also give us a call here at Selectra on 020 3936 0059 to get a personalised comparison. By doing so, you can make just one phone call instead of having to contact multiple gas and electric suppliers to compare prices.
For more information on the most popular business energy providers, head to their relative guide:
Your energy supplier is the company you pay either your power or gas bill to. You can find out who your energy provider is in the following ways:
If you’re still having troubling, head to our dedicated guide on finding your energy supplier.
When choosing an energy provider for your home, there are a few different factors we recommend you consider. While some of these factors may seem obvious, others (that are just as important) can easily be overlooked.
Before starting to compare plans, we recommend you establish your priorities so that you can find the best energy provider to suit your needs.
Here at Selectra, our trained advisors can help you choose the right energy supplier for you and your home. Call 020 3936 0059 now or request a free callback now.
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