Who are the Big Six energy suppliers?

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    Guide Author

    James Longley

    Managing Director

    min read

    The ‘Big Six’ is a collective term used to describe the six biggest energy companies in the UK. Since the privatisation of the energy sector during the 1980s and 90s, these six industry giants – British Gas, EDF Energy, E.ON UK, npower, Scottish Power and SSE – have dominated both the domestic and commercial energy markets in the UK.

    Over recent years, the industry has become increasingly competitive and consumer-driven. We are now seeing wholesale gas prices rising by 250% since January, impacting many countries. As a result of this global energy crisis, smaller suppliers are going bust and are being bought out by big energy companies. This change has seen consumers being encouraged to shop around more regularly, leading to a drop in customer loyalty and much higher switching rates. Despite this, the Big Six energy suppliers’ market share, when combined, remains around 70% in both the gas and electricity markets.

    As consumers have looked to take advantage of cheaper energy deals with smaller providers in recent years, it’s safe to say that the top six energy suppliers have adapted accordingly, become far more competitive and continue to dominate the UK’s energy market. Today, some of the best business energy tariffs on the market – both in terms of value and additional service extras – are provided by the Big Six energy suppliers. So, who are the Big Six energy suppliers and what do they have to offer?

    Who are the Big Six energy companies?

    British Gas

    As the UK’s biggest energy provider, serving around 12 million homes and 350,000 businesses, British Gas is a subsidiary of the UK-based Centrica PLC, which also owns Scottish Gas. As one of the biggest energy companies in the UK, British Gas provides a wide range of energy tariffs to meet the needs of homeowners and businesses alike.

    Thanks to its size, the company is able to offer a full range of commercial services for your business, ranging from basic fixed price gas and electricity tariffs, and flexible 30-day rolling energy plans, to full boiler services and renewable energy solutions. Additionally, British Gas offers a Carbon Trust-certified, 100% renewable electricity plan for businesses that are keen to take advantage of greener energy solutions.

    EDF Energy

    EDF Energy – a subsidiary of the French government-owned Électricité de France – comprises former UK energy suppliers Seeboard, London Energy and SWEB Energy, and is currently the largest supplier of low carbon electricity out of the six big energy companies. Supplying gas and electricity to almost six million customers across the UK, the company offers both fixed and flexible tariffs for businesses.

    Naturally, as one of the Big Six energy suppliers, EDF provides its business customers with an array of services on top of its regular business energy plans. These services include access to its online management systems, 24/7 access to live customer service chat and free dedicated UK business advisers who can make sure you are getting the most from your energy plan. Additionally, EDF provides extra help for new start-up businesses, as well assisting those keen to adopt more sustainable energy solutions.

    E.ON

    E.ON is one of the biggest investor-owned energy companies in the world, and serves over four million gas and electricity customers across the UK alone. The German-based supplier specialises in personalised domestic and commercial plans that take advantage of both smart and sustainable energy solutions to fulfil consumer needs. Whether it’s a family home or a business of any size, E.ON will have a tailored plan for you.

    E.ON understands that a one-size-fits-all approach to business energy tariffs simply does not provide either the service or the value your business needs and expects. With this in mind, the energy giant offers solutions by specific industry, rather than just size or location. This includes bespoke plans for businesses in retail, hospitality and leisure, commercial real estate, education, manufacturing, healthcare and many more.

    npower

    Supplying energy to around 6.5 million residential and business customers across the UK, npower is the country’s third largest supplier of energy. Although initially founded as National Power in 1990, npower is now owned by the German-based RWE Group – one of Europe’s leading gas and electricity providers.

    When it comes to supplying energy to businesses, npower offers both fixed price and variable energy plans, and is completely committed to a blanket smart meter installation programme for all of its business customers. This devotion to smart technology allows the company to make it as easy as possible for you as a business to monitor and alter your energy consumption. Additionally, npower also operates a ‘Business Rewards’ scheme, which allows you and your staff to take advantage of a range of special offers and discounts on a wide selection of food, drink and entertainment activities.

    ScottishPower

    ScottishPower supplies gas and electricity to over five million customers in the UK and is a specialist in SME energy plans. The company is now part of the Spanish Iberdrola Group, a leading corporation in the green energy industry and one of the largest suppliers of electricity in the world.

    Thanks to its commitment to providing commercial energy choices that are clear and simple, ScottishPower is popular among SMEs and start-up businesses. Aside from being dedicated to becoming the UK’s first integrated energy supplier to generate 100% green electricity through wind energy and smart grids, ScottishPower is also partnered with the Carbon Trust and is expert in providing its customers with free energy saving advice.

    SSE

    Alongside its regional brands (SSE Scottish Hydro, SSE SWALEC, SSE Southern Electric and SSE Atlantic), SSE is owned by British company OVO energy. As the UK’s second largest energy supplier, the company prides itself on its ability to facilitate an array of additional services to complement its selection of competitive business energy plans.

    SSE believes that every business is unique and requires an energy plan that properly meets its specific needs. Therefore – from SMEs and sole traders to larger businesses and multinational corporations – SSE consult specialist business energy advisers to help create a bespoke energy service that is tailored to your business’ essential requirements.

    Are you looking for a bespoke energy tariff that helps you cut costs on your utility bills? Contact our expert utility brokers to see how we can help. We’ve worked with thousands of businesses to reduce their outgoings.

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    How much do you spend & how often?

    An estimate is fine if you don't have a bill to hand

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    Let’s save time, can we automatically gather meter information?

    ? What does this mean?
    To get your quotes at lightening speed we need several key pieces of information which can all be found on your electricity bill. But by simply ticking this box, we can search ‘industry held data’ to get your meter number, electricity consumption and current energy supplier. This means that we can get you quick quotes without asking you to dig out all of your paperwork. This is personal data therefore we need you to allow us to access this information.
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    Do you know your electric meter number?

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    An estimate is fine if you don't have a bill to hand

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