Who are the UK's main energy suppliers?

• Leading Big Six energy supplier in the UK.
• British Gas is owned by parent company Centrica.
• British Gas supply 15 million homes in the UK.

• Largest producer of electricity in the UK.
• EDF Energy is a French state owned company.
• EDF Energy supplied 5.6 million homes in the UK.

• UK market leader is producing combined heat and power.
• E.ON is the world's largest investor owned utility service.
• E.ON serves over 26 million customers.

• Npower is owned by German company RWE.
• Previously npower was known as Innogy.
• Npower supply gas and electricity to 6.5 million customers in the UK.

• Scottish Power is owned by Spanish parent company Iberdrola.
• One of the smaller of the Big Six energy companies.
• Scottish Power serve 5.3 million customers in the UK.

• SSE trade under different names, including SSE, SWALEC and Scottish Hydro depending on the region.
• SSE is the second largest Big Six supplier in the UK.
• SSE supply 9.1 million customers in the UK.

• A team of ex-employees who used to work for one of the Big Six.
• Over 50-years' combined experience in the energy market.
• Affect energy pride themselves on their level of customer service.

• Not-for-profit energy provider owned by Islington Council.
• Offers residents and alternative to the Bix Six energy providers.
• Easy-to-understand terms and pricing - no confusing jargon or complicated tariffs.

• Avro Energy began trading in 2015.
• They look to provide simple and competitively prices energy products.
• Avro Energy is based in Nuneaton, Warwickshire.

• Better Energy began supplying energy to customers in 2011.
• Better Energy currently only offers gas to customers.
• Better Energy's motto is "Same energy, Better price".

• The new name for OVO ‘pay-as-you-go’ energy.
• Aims to improve the prepayment energy market.
• Energy use can be monitored and meters topped up using the Boost app.

• Aims to help people become more energy efficient.
• Offers tips to help people use less energy and save money.
• UK-based customer support team can be contacted by phone or email.

• Brighter World Energy began trading in 2016.
• Every 2,000 customers who switch means they build a sustainable solar powered micro grid in a village in Africa.
• Works in partnership with not-for-profit supplier Robin Hood Energy.

• Bristol Energy committed to local development and reinvestment.
• They pride themselves on a transparent service.
• Bristol Energy supply around 10,000 customers in Britain.

• Bulb specialise in renewable energy products.
• They look to take on the Big Six by empowering their customers.
• Bulb Energy supports independent renewable generators.

• Only UK supplier to be owned by their customers.
• Coop Energy has been operating since 2010.
• Coop Energy boast a fair and transparent service.

• Only offer gas to their customers.
• Helps SMEs with a simplified pricing structure.
• Boast a transparent and trustworthy service.

• EBICo was founded in 2008.
• One of the few suppliers who offer zero standing charge tariffs.
• EBICo also offer competitive pay-as-you-go tariffs.

• Offers a cheaper rate during seven night-time hours.
• Special Economy 7 meters show your day rate and discounted rate.
• See how much you could save by switching to Economy 7.

• Economy Energy fight to keep their customer's bills falling.
• Over 5% of their energy is generated from renewable sources.
• Boast a service that has local communities at its heart.

• Ecotricity are always looking for new ways to invest in green energy sources.
• Ecotricity regularly feature amongst the top of Which's satisfaction survey.
• Ecotiricty is not-for-dividend, which means their customers always come first.

• British-owned energy company based in Birmingham.
• Aim is to keeping costs down so customers pay less.
• Tariffs are simple and straightforward to helps customers choose the best deal.

• Energy SW work alongside OVO to offer improved levels of customer service.
• Offer competitive pricing.
• Offer per-payment meters for landlords to help residents enjoy savings as well.

• ENGIE look to push boundaries in low carbon energy solutions.
• They offer data led energy products to help customers save money.
• Serve more than 14,000 customers in both public and private sectors.

• Entice Energy offers low cost gas to homes all over the UK.
• Their service boasts a state of the art online account service.
• Each customer has access to an account manager.

• Extra Energy is the sister company of German company extraenergie.
• Considered a main challenger to the Big Six.
• Aim to offer low prices with excellent service standards.

• Provides competitive energy prices to residents of Cheshire East.
• Run by Cheshire East Council, who have partnered with OVO.
• Payments will be collected by OVO on behalf of Fairerpower.

• First:utility is the fastest growing energy supplier in the UK.
• They are committed to helping reduce energy bills by offering cheaper tariffs.
• As a supplier they campaign for positive changes, including faster switching.

• Fischer puts customers first to value fairness, honesty and loyalty.
• Offers just one tariff, its ‘One Fair Tariff’ do deliver one competitive price to all.
• Family-run company that delivers for customers and not shareholders.

• Flow Energy employ market leaders to deliver the best prices for customers.
• Their UK-based customer service team can offer support every step of the way.
• Pioneers of the electricity-generating Flow boiler.

• Future Energy can boast low prices as well as transparent billing.
• Based in Newcastle and prodominently supplies the North East of England.
• Offer both gas and electricity products as part of their service.

• Part of Co-operative Energy from 2016.
• Provides gas and electricity to over 140,000 homes across the UK.
• Ambition is to offer fair, competitive, no gimmicks prices to all customers.

• GnERGY is a new breed of community suppliers.
• They aim to offer gas and electricity in an open and honest way.
• They boast a multi lingual UK-based call center.

• Go Effortless Energy is built from the ground-up using customer perspective.
• They offer one honest simple and fair tariff to all their customers.
• They steer clear of misleading lyalty bonuses and cash-back schemes.

• Good Energy offers renewable energy products.
• Founded in 1999, they were the first supplier to have a 100% renewable energy fuel mix.
• Good Energy has an expanding community of generators across the UK.

• Not-for-profit energy provider owned by Doncaster Council, in partnership with Robin Hood Energy.
• Provides low cost, fair and transparent pricing and choice along with quality customer service.
• A real alternative to expensive tariffs, especially prepayment customers.

• Green Energy can supply domestic and business customers.
• They buy energy from anyone generating their own surplus electricity.
• They also offer lower cost products by harnessing the power of water, wind and sun.

• An Italian energy company founded in 2003, it supplies energy to Italy and the UK.
• Aims to challenge the Big Six by operating with passion and innovation.
• Offers customers more choice when it comes to managing energy needs.

• Offer gas and electricity to customers across the UK.
• Part of the larger American group Just Energy.
• They state their aim as a company looking to develop cost effective energy solutions for their customers.

• iSupply is based in Bournemouth and launched in 2012.
• Their mission is to provide low pricing and easy access to an online management account.
• iSupply prioritise price and service for their customers.

• Liverpool-based offering low-cost energy to the city and surrounding areas.
• No shareholder or director bonuses means all profits go into keeping prices low for customers.
• Works to support prepayment customers and help them move onto the best and cheapest alternatives and put them in control of their energy bills.

• Work in partnership with SSE.
• M&S Energy prides itself in offering straightforward energy options to customers.
• Unavailable in the Channel Islands, Isle of Man, Ireland and Northern Ireland.

• Aims to offer honest, simple and cheaper pricing to its customers.
• Focus on technology to put itself at the forefront of both prepay and direct debit markets.
• Aims to save customers money by offering an alternative to the Big Six.

• Octopus is the largest investor in solar farms.
• Octopus offers a better experience for customers through transparency, honesty and simplicity.
• Puts the planet first with long term investment in low CO2 alternatives.

• Shows customers how and when they use energy, to keep them in control.
• Simple and transparent pricing so customers know exactly what they’re paying for.
• Offers one simple, 12-month, fixed-rate tariff, with no exit fees.

• Energy supplier established by Scottish social housing providers.
• Aims to reduce heat and fuel costs by passing benefits from the energy sector to residents and communities.
• Generates its own power and reinvests profits to help benefit customers.

• Outfox the Market offers a customer-led energy alternative.
• Energy is bought at wholesale from 100% renewable sources.
• Gas and electricity is available with no contract tie-ins.

• An environmentally-conscious energy supplier aiming to make renewable energy available to all.
• Offers a 100% renewable tariff for those who want to do more for the environment.
• Boost publishes an annual environmental impact report and is working to achieve the Carbon Trust Standard.

• Offers local residents to Peterborough fair and competitive prices.
• In partnership with OVO.
• OVO will collect payments on Peterborough Energy's behalf.

• PFP Energy offers simple tariffs and bills, so you know exactly what you're getting.
• Offer discounts for online accounts and direct debits.
• Owned by the PFP Group, PFP Energy launched in 2015.

• Offers an innovative and unique way to buy and sell-back energy.
• Transparent pricing to keep customers in control.
• A really different alternative with customer satisfaction ratings of 90%.

• A not-for-profit supplier, owned by Derby City Council to supply the people of Derby and the midlands.
• No shareholder or director bonuses means all profits go into keeping prices low for customers.
• Aim to provide energy at the lowest price possible.

• Robin Hood Energy is a not-for-profit supplier.
• Boast a UK-based call centre.
• Look to provide energy at the lowest price possible.

• Sainsbury's Energy works in association with British Gas.
• The look to provide customer service and energy expertise.
• Offer gas, electricity and boiler services.

• So Energy was set up to restore customer trust in suppliers.
• Committed to delivering low prices for their customers.
• A simplistic approach and the latest technology gives So Energy a competitive edge.

• An independent, British energy supplier set up in 2009 to offer a green energy alternative.
• Originally a solar energy provider, its now evolved to offer more alternatives.
• 100% renewable, ethical and affordable energy for all.

• Southend Energy works in partnership with OVO.
• Dedicated to bringing competitive energy prices to Southend-On-Sea Borough Council.
• Focus not just on low prices, but also sustainable prices.

• The only suppliers built around the UK lettings industry.
• Offer tenants a tailored service and better value than the Big Six alternatives.
• Utilise customer feedback to constantly improve their service.

• Part of the SSE group, a member of the Big Six.
• Offers gas and electricity to prepayment and credit customers.
• Customer-focussed with UK-based call centres.

• Part of the SSE group, a member of the Big Six.
• Offers gas and electricity to prepayment and credit customers.
• Customer-focussed with UK-based call centres.

• Part of the SSE group, a member of the Big Six.
• Offers gas and electricity to prepayment and credit customers.
• Customer-focussed with UK-based call centres.

• Part of the SSE group, a member of the Big Six.
• Supplies Energy to Wales and the south west.
• Customer-focussed with UK-based call centres.

• Providing customers with low energy prices and great customer service.
• Can contact by phone, email or on social media.
• Aims to save 100,000 customers £20m over the next three years.

• Tonik Energy is looking to halve customer bills by 2020.
• They offer fari prices through smart technology and transparent pricing.
• Tonik Energy is based in Birmingham.

• TOTO Energy offers customers low prices by purchasing energy at wholesale.
• They offer a variety of payment methods to suit all customer's needs.
• Look to provide offerings cheaper than the Big Six.

Usio Energy entered the market in 2017. They are a small gas and electricity supplier based in London.

• Utilita is the leading provider of pre-payment meters in the UK.
• Utilita puts per payment customers first to offer them a better deal.
• Payments can be sent to a meter remotely, allowing customers more freedom.

Utility Point entered the energy market in 2017. They are a small gas and electricity supplier based in Dorset.

• At least 0.5% cheaper than the Big Six.
• Utility Warehouse will always put you on their cheapest tariff.
• Supplies more than 500,000 domestic and commercial customers.

• White Rose Energy was launched in 2016.
• A not-for-profit supplier.
• Serves customers in Yorkshire.

• Not-for-profit energy company supplying West Sussex, East Sussex and the surrounding areas.
• Operated by a partnership of local councils who want people in Sussex to pay less for their energy.
• Works in conjunction with Robin Hood Energy to supply low-cost gas and electricity.

• Zog Energy uses cloud computing to provide unrivalled customer service.
• It's aim is to provide the best possible value energy to its customers.
• They look to keep their own overheads down and pass savings on to customers.