Scottish Power Limited is a vertically integrated energy company based in Glasgow, Scotland. It is a subsidiary of Spanish utility firm Iberdrola.
The Office of Gas and Electricity Markets (Ofgem), supporting the Gas and Electricity Markets Authority, is the government regulator for the electricity and downstream natural gas markets in Great Britain. It was formed by the merger of the Office of Electricity Regulation (OFFER) and Office of Gas Supply (Ofgas).
Good Energy Group PLC is a British energy company based in Chippenham, Wiltshire that provides services in the electrification of transport and decentralised renewable energy generation such as domestic solar panels. The company is also an energy retailer, and built a portfolio of wind and solar generation which was sold in 2022. Founded by Juliet Davenport, its CEO is Nigel Pocklington.
The energy policy of the United Kingdom refers to the United Kingdom's efforts towards reducing energy intensity, reducing energy poverty, and maintaining energy supply reliability. The United Kingdom has had success in this, though energy intensity remains high. There is an ambitious goal to reduce carbon dioxide emissions in future years, but it is unclear whether the programmes in place are sufficient to achieve this objective. Regarding energy self-sufficiency, UK policy does not address this issue, other than to concede historic energy security is currently ceasing to exist.
E.ON UK is a British energy company and one of the largest suppliers of energy in the UK, following its acquisition of Npower. It is a subsidiary of E.ON of Germany and one of the Big Six energy suppliers. It was founded in 1989 as Powergen, and was listed on the London Stock Exchange and was once a constituent of the FTSE 100 Index. It has been a subsidiary of E.ON since 1 July 2002.
The availability and uptake of green electricity in the United Kingdom has increased in the 21st century. There are a number of suppliers offering green electricity in the United Kingdom. In theory these types of tariffs help to lower carbon dioxide emissions by increasing consumer demand for green electricity and encouraging more renewable energy plant to be built. Since Ofgem's 2014 regulations there are now set criteria defining what can be classified as a green source product. As well as holding sufficient guarantee of origin certificates to cover the electricity sold to consumers, suppliers are also required to show additionality by contributing to wider environmental and low carbon funds.
A Guarantee of Origin is an energy certificate defined in article 19 of the European Directive 2018/2001/EC. A GO certifies attributes of electricity, gas, heating and cooling, especially coming from renewable sources and provides information to energy customers on the source of their energy. Guarantees of Origin are the only defined instruments evidencing the origin of electricity generated from renewable energy sources.
OVO Energy is a major energy supplier based in Bristol, England.
Shell Energy Retail Limited was a British consumer gas, electricity and broadband provider. Formerly a subsidiary of Shell, the business was acquired by Octopus Energy in December 2023.
EKOenergy is a globally active nonprofit ecolabel for renewable energy. It is owned by the Finnish Association for Nature Conservation and managed in cooperation with other environmental NGOs.
A feed-in tariff (FIT) is paid by energy suppliers in the United Kingdom if a property or organisation generates their own electricity using technology such as solar panels or wind turbines and feeds any surplus back to the grid. The FIT scheme was imposed on suppliers by the UK government, and applied to installations completed between July 2009 and March 2019.
Co-op Energy is a membership-owned British energy supply company based in Warwick that began trading in 2010. It sells renewable electricity and gas to its ethically concerned member owner/customers and is a established large operator, an alternative to the Big Six energy suppliers. Constituting half or more of the Your Co-op Utilities division of its parent society Midcounties Co-operative, Co-op Energy is the only co-operative supplier in the British market, meaning supplied customers can voluntarily acquire an ownership share and thereby receive rights to influence the governance of the business, stand for election and have a say in formulating the products it offers.
The Big Six were the United Kingdom's largest retail suppliers of gas and electricity, who dominated the market following liberalisation in the late 1990s. By 2002, six companies – British Gas, EDF Energy, E.ON, RWE npower, Scottish Power and SSE – had emerged from the 15 former incumbent monopoly suppliers.
Solarplicity Energy Limited was a renewable energy company based in Hertfordshire, England. In August 2019 the company became the 13th energy supplier to collapse since 2018, affecting around 7,500 domestic and 500 business customers.
Spark Energy was an electricity and gas supplier in the United Kingdom, established in 2007 and headquartered in Selkirk, Scottish Borders. Its operating company Spark Energy Supply Ltd entered administration in November 2018, and industry regulator Ofgem appointed OVO Energy to take over Spark Energy's 290,000 customer accounts; OVO continues to run Spark as a separate brand, but is in the process of migrating all its customers to the SSE brand.
Robin Hood Energy was a not-for-profit energy company launched in September 2015 by Nottingham City Council as a competitor to the "big six" energy suppliers in the United Kingdom. The company supplied gas and electricity nationally to homes and businesses until September 2020, when its customer accounts were sold to Centrica, the parent company of British Gas.
Bulb Energy Ltd., trading as Bulb, was an energy supply company in the United Kingdom acquired by Octopus Energy in 2022. Founded in 2013, the company attracted venture capital from DST Global and Magnetar Capital and ran at a financial loss while achieving rapid growth in customers. Bulb claimed to provide electricity and gas from renewable or off-set sources. As of November 2021, it had a share of approximately 5-6% of the UK energy market and was considered the seventh largest in the country.
Octopus Energy Group is a British renewable energy group specialising in sustainable energy. It was founded in 2015 with the backing of British fund management company Octopus Group, a British asset management company. Headquartered in London, the company has operations in the United Kingdom, France, Germany, Italy, Spain, Australia, Japan, New Zealand and the United States. Following the acquisition of Shell Energy on 1 December 2023, Octopus Energy is the UK's second largest domestic energy provider.
A consumer green energy program is a program that enables households to buy energy from renewable sources. By allowing consumers to purchase renewable energy, it simultaneously diverts the utilization of fossil fuels and promotes the use of renewable energy sources such as solar and wind.
Pure Planet was a British energy supply company 24% owned by BP. The company, which was founded in 2015 and based in Bath, England, supplied electricity and gas to domestic customers in the UK. It ceased trading on 13 October 2021 following BP's withdrawal of support. On 17 October, Ofgem appointed Shell Energy as the new supplier of Pure Planet's customers.
