Cheapest electricity supplier in 2021

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When it comes to selecting an electricity supplier, affordability will probably be right at the top of your wish list. For most households, electricity is a major monthly expense, so anything you can do to minimise this outgoing will make a difference to your finances
Here, we take a closer look at the UK’s cheapest energy suppliers, the cost of electricity and how you can find the best deal for your household.
Last updated: May 2021

As electricity bills are made up of a lot of different elements, and prices vary across the country, there’s no one supplier offering the lowest electricity prices around. However, there are a number of energy companies that work hard to ensure their tariffs are as affordable as possible. Choosing one of these cheap electricity suppliers could help you cut the cost of your energy bill.

Who is the UK’s cheapest electricity supplier?

While there’s not one energy company that’s cheaper than the rest, there is a group of suppliers that is always among the most affordable. These are:

  • Avro Energy
  • Outfox the Market
  • Simplicity Energy
  • Green
  • Utility Point

Cheapest electricity supplier 2021
The cheapest tariffs available from these suppliers are:

Company Tariff Average annual cost Type of tariff Savings compared with price cap
Simplicity Energy 2020 Cabbage – paperless £823 Fixed £219
Utility Point Just Join Up 12M Fixed Wk46 – paperless £832 Fixed £210
Green Aspen – paperless £851 Variable £191
Avro Energy Simple and SuperPrime – paperless £855 Fixed £187
Outfox the Market Fix’d 20 17.0 – paperless £857 Fixed £185

Interestingly, none of the ‘big six’ energy providers is among the cheapest in the country. This means that, if you want an affordable tariff, it’s well worth looking at the newer, smaller suppliers popping up throughout the UK.

As the cost of a unit of electricity can vary significantly by region, you may be able to find a cheaper energy supplier in your area. Always use an impartial price comparison service before switching to ensure you get the most for your money.

Which energy supplier has the cheapest standing charge?

The daily standing charge is the amount an electricity provider charges its customers to connect them to the grid. In most cases, customers are asked to pay the standing charge every single day of their contract, whether they use any electricity or not.

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With the average daily standing charge in the UK now around 24.5p per day, or £90 per year, the fee can add up fast. Finding a supplier with a low standard charge can help you to save a considerable amount on your annual energy bill.

At the moment, there’s just one UK energy supplier that doesn’t have a standing charge. Utilita asks customers to pay extra for the first one or two kWh of electricity they use every day. This effectively acts as a standing charge. However, customers won’t pay anything at all on the days when they don’t use any electricity. This can make Utilita a great option for properties, like holiday homes, that are regularly left empty a few days a week.

Other energy companies periodically offer tariffs without standing charges. Keeping your eyes peeled for these energy deals could help you save on your energy bills.
Cheapest electricity supplier

What country has the cheapest electricity?

The cost of electricity varies throughout the world. Often, countries with the easiest access to fossil fuels, like those in the Middle East, enjoy the cheapest electricity prices.

According to Statista, the country with the cheapest electricity in 2020 was Qatar. Its citizens paid an average of just $0.03 per kWh of energy they consumed. That’s compared to an average of $0.26 in the UK and $0.38 in Germany.

  • Germany – $0.38
  • Japan – $0.29
  • UK – $0.26
  • New Zealand – $0.23
  • US – $0.15
  • China – $0.08
  • Russia – $0.06
  • Saudi Arabia – $0.05
  • Qatar – $0.03

Wholesale electricity market price vs retail price

Energy companies buy their electricity wholesale. This means that they buy large amounts of energy from electricity generators before selling it on to the end consumer.

While wholesale prices are generally a lot lower than retail prices, the two are closely related. When wholesale prices go up, retail prices follow and when wholesale prices go down, end users pay less for their energy.

The table below shows how wholesale and retail prices have fluctuated over the past few years:

Jan 2016 £36.95 127.90 £590.15
Apr 2016 £34.37 127.70 £589.23
Jul 2016 £38.40 127.70 £589.23
Oct 2016 £56.03 127.70 £589.23
Jan 2017 £53.37 127.70 £589.23
Apr 2017 £42.10 132.10 £609.53
Jul 2017 £43.05 139.20 £642.29
Oct 2017 £46.68 142.30 £656.59
Jan 2018 £56.18 142.30 £656.59
Apr 2018 £50.74 143.50 £662.14
Jul 2018 £57.61 149.40 £689.36
Oct 2018 £64.76 155.20 £716.12
Jan 2019 £62.55 147.60 £681.05
Apr 2019 £35.50 163.80 £755.80
Jul 2019 £41.86 163.80 £679.00
Oct 2019 £37.74 161.70 £679.00
Jan 2020 £33.93 161.70 £679.00

Wholesale price evolution and reasons

The cost of wholesale electricity is heavily influenced by the cost of natural gas. This is because natural gas is still used to generate around 40% of the UK’s electricity.

Natural gas prices can alter depending on a range of political and economic factors. For a long time, the UK extracted almost all of its natural gas from domestic reserves in the North Sea. These reserves have been slowly dwindling, forcing the UK to import more and more of its natural gas from abroad.

The cost of electricity generated from renewable sources can also vary according to availability. For example, in very sunny weather, solar farms might produce an excess of energy while in darker, winter months, their generation capacity will drop significantly. Electricity generated from nuclear power plants is less prone to price variations as these generators can continue to work in all weathers and don’t rely on fossil fuels for their power.

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Updated on 23 Jul, 2021

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