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There are dozens of energy suppliers in the UK with companies entering and leaving the market. Some of the main suppliers are:
British Gas remains the largest energy provider in the UK, although it has been losing customers over recent years. It used to be sole energy provider for the UK, until it was privatised in 1986.
The majority of online reviews and studies state that the range and price of tariffs, and the level of customer service, is mediocre at best.
Still, if you’re a traditionalist who doesn’t like to try out new companies, British Gas is the energy supplier for you.
Indeed, statistics suggest that a fair percentage of its customers have stayed loyal for an incredibly long time.
Eon is one of the largest energy providers operating in the UK, and forms part of its so-called “big six” energy companies. The German company serves over five million British households.
In recent years, it has made big moves to become a greener supplier. In 2018, it acquired renewable energy company Innogy. In 2019, it became the first “big six” company to switch customers onto 100% renewable energy.
It is rarely ranked among the best companies for price or customer service, but if you’re after a large energy provider which focuses on renewable energy, Eon could be for you.
EDF is one of the ‘big six’ energy companies, and is currently the UK’s largest producer of low-carbon energy.
It took control of the UK’s nuclear generator in 2009, and its energy mix mostly consists of nuclear energy.
As is typically the case with ‘big six’ energy providers, it’s rarely listed among the best-value tariffs, nor praised for having the best customer service.
EDF prides itself in offering lengthy fixed-rate tariffs – some as long as two years – so it might be the provider for you if you’re worried about mid-contract price rises.
Another ‘big six’ company, Npower has been serving British households energy since 2000. It currently has over two million customers.
Npower had gained a reputation for poor customer service in the past, but recent reviews suggest it has made significant improvements.
It has been taking steps to improve its online account management and to make the switching process simpler for new customers. All of its tariffs now serve 100% renewable energy.
Npower is now majority-owned by Eon, although they remain separate companies for now.
Scottish Power is based in Glasgow, but serves energy to customers all over the UK. It was founded in 1990 and has grown to become a ‘Big Six’ provider.
It is the largest supplier of renewable energy generated by wind in the UK. In fact, its green energy tariffs are generated 100% from its UK wind farms.
Scottish Power isn’t well-known for fantastic prices or mind-blowing customer service, but it does offer fixed-rate contracts up to two years long.
Ovo Energy had already established a reputation for the UK’s best green energy provider in its early years on the market.
It was the first supplier to remove coal and nuclear from its energy mix, and has received plenty of plaudits for its ‘Plan Zero’ initiative to create a zero-carbon future.
In 2020, it bought out SSE to become the UK’s second-largest energy provider, yet still retains the same commitment to green and high level of customer service that initially made it successful.
If you want to do your bit for the environment while still paying a competitive rate for your energy, check Ovo’s tariffs.
Founded in 1998, SSE had been one of the UK’s largest energy supplier for decades. It was bought out by Ovo Energy in 2020.
Ovo has bought out the SSE brand, so their energy supplier will be switched within the next few months, even if the branding on their bills remains the same.
Since launching in 2016, Octopus Energy has raised the bar for customer service in the energy sector. It offers 100% renewable energy, yet still manages to offer competitive prices among its various energy tariffs.
If you’re comfortable having your energy provided by a company that’s not yet established as a household brand name, check out this one.
Engie is a French-based company, which also focuses on providing green energy. When it entered the UK energy market in 2017, it was the largest company to do so in 15 years. It has since been bought out by Octopus Energy, so its customers will be switched within the next few months.
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