Bulb Energy Ltd., trading as Bulb, is an energy supply company in the United Kingdom which was acquired by
Octopus Energy in 2022. Founded in 2013, the company attracted
venture capital
Venture capital (often abbreviated as VC) is a form of private equity financing that is provided by venture capital firms or funds to start-up company, startups, early-stage, and emerging companies that have been deemed to have high growth poten ...
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.
In September 2021, the company sought a bailout due to financial problems caused by
increasing natural gas prices. It was placed into Energy Supply Company Administration (a special
administration
Administration may refer to:
Management of organizations
* Management, the act of directing people towards accomplishing a goal
** Administrative Assistant, traditionally known as a Secretary, or also known as an administrative officer, administ ...
regime) by industry regulator
Ofgem
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on 24 November 2021 following a refusal by investors to provide further funding. While customers of other failed suppliers have been transferred by Ofgem to new suppliers, the regulator decided Bulb was too large and so it became the first energy company in the UK to enter special administration.
In October 2022, Octopus Energy announced that they planned to acquire Bulb's 1.5 million customers and 650 staff. The acquisition was completed on 21 December 2022.
History

Bulb Energy Ltd. was incorporated in April 2013 under the name Regent Power Ltd., and was known as Hanbury Energy Ltd. between June and October 2015.
Its
parent company
A holding company is a company whose primary business is holding a controlling interest in the securities of other companies. A holding company usually does not produce goods or services itself. Its purpose is to own shares of other companies ...
is Simple Energy.
From the start of trading, the directors were Amit Gudka, a former energy market trader for
Barclays
Barclays () is a British multinational universal bank, headquartered in London, England. Barclays operates as two divisions, Barclays UK and Barclays International, supported by a service company, Barclays Execution Services.
Barclays traces ...
, and Hayden Wood, a former management consultant.
Gudka stepped down from day to day activities at Bulb in February 2021 to focus on his new
battery storage startup.
Initial funding came from the founders' savings and from their personal contacts. Backing was then obtained from JamJar Investments.
In August 2018 a further £60 million funding was secured from two backers:
DST Global (owned by Russian billionaire
Yuri Milner
Yuri Borisovich (Bentsionovich) Milner (russian: Юрий Борисович (Бенционович) Мильнер; born 11 November 1961) is a Soviet-born Israeli entrepreneur, venture capitalist and physicist. He is a cofounder and former c ...
), and US hedge fund
Magnetar Capital.
By 2018, the company was worth between £400M and £500M.
Growth was rapid from the start of 2017, and by early March 2019 the company had over 1 million customers and was employing over 550 staff.
Its headquarters moved in February 2019 from offices at Hanbury Street,
Shoreditch
Shoreditch is a district in the East End of London in England, and forms the southern part of the London Borough of Hackney. Neighbouring parts of Tower Hamlets are also perceived as part of the area.
In the 16th century, Shoreditch was an impor ...
to
Bishopsgate
Bishopsgate was one of the eastern gates in London's former defensive wall. The gate gave its name to the Bishopsgate Ward of the City of London. The ward is traditionally divided into ''Bishopsgate Within'', inside the line wall, and ''Bisho ...
in the
City of London
The City of London is a city, ceremonial county and local government district that contains the historic centre and constitutes, alongside Canary Wharf, the primary central business district (CBD) of London. It constituted most of London f ...
.
In 2018, Bulb was the UK's largest
renewable energy supplier, and the UK's seventh-largest energy supplier, smaller only than the "
Big Six".
It was the only company to achieve this growth without taking over other companies, as rival companies had done.
SyndicateRoom identified Bulb as the UK's fastest-growing private company of 2018.
Special administration and acquisition
In September 2021, Bulb sought a bailout due to financial problems caused by
sharply increasing natural gas prices. In November 2021, Bulb became the first energy company to go into Special Administration, under which it will be run by the government through the regulator Ofgem.
This process will allow the government the option to make grants and loans to the business, while the administrators work to transfer customers and sell the business in parts or in full.
The government set aside £1.7 billion to cover the company's trading costs and the cost of the administration. According to the ''
Financial Times
The ''Financial Times'' (''FT'') is a British daily newspaper printed in broadsheet and published digitally that focuses on business and economic current affairs. Based in London, England, the paper is owned by a Japanese holding company, Nikke ...
'', at least two energy suppliers offered solutions that would have allowed Bulb customers to be switched to alternative providers at a reduced cost to consumers and taxpayers.
The company's subsidiaries in France, Spain and Texas were unaffected by its entry into administration.
Teneo were appointed administrators of Bulb in the UK on 24 November,
and Interpath were appointed for Bulb's parent Simple Energy.
In October 2022, Octopus Energy reached an agreement to acquire Bulb's 1.5 million customers. The acquisition was completed on 21 December 2022.
Operations
In the year 2018–2019, Bulb's renewable electricity was generated as follows: 73% from
wind power
Wind power or wind energy is mostly the use of wind turbines to generate electricity. Wind power is a popular, sustainable, renewable energy source that has a much smaller impact on the environment than burning fossil fuels. Historicall ...
, 24% from
solar power
Solar power is the conversion of energy from sunlight into electricity, either directly using photovoltaics (PV) or indirectly using concentrated solar power. Photovoltaic cells convert light into an electric current using the photovoltaic ef ...
and 3% from
hydroelectricity
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined a ...
. Bulb's carbon-neutral gas was composed of 10%
biogas
Biogas is a mixture of gases, primarily consisting of methane, carbon dioxide and hydrogen sulphide, produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste and food waste. I ...
and 90%
carbon offset
A carbon offset is a reduction or removal of emissions of carbon dioxide or other greenhouse gases made in order to compensate for emissions made elsewhere. Offsets are measured in tonnes of carbon dioxide-equivalent (CO2e). One ton of carbon ...
.
Bulb announced in June 2019 that they were expanding to France, Spain and Texas.
In August 2020, Bulb agreed to pay £1.76 million in redress, refunds and goodwill payments after industry regulator
Ofgem
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, logo = Ofgem logo.svg
, logo_width = 124px
, logo_caption =
, seal =
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found 11,400 customers had been overcharged, together with other mistakes (some self-reported by Bulb).
References
{{Energy in the United Kingdom, companies
2022 mergers and acquisitions
Electric power companies of the United Kingdom
Utilities of the United Kingdom
Companies based in London
British companies established in 2015
Companies that have entered administration in the United Kingdom