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Key facts about Bulb


Bulb's mission is to help people lower their bills and reduce carbon emissions.


Bulb was founded in 2015 by Hayden Wood and Amit Gudka because they were fed up with the way the energy industry treats its customers and with how much businesses were charging for renewable energy.


Bulb is the UK's fastest growing energy supplier, providing 100% renewable electricity and 100% carbon neutral gas to more than 1.6 million members across the UK. Our electricity is sourced from renewable generators from across the UK, including wind, solar and hydro sites.


Over 550 people work at Bulb and the team are based in London. We're a Living Wage Employer and a certified B Corp, working to demonstrate how business can be a force for good. We were named one of the top 25 UK tech startups to work for in 2018.


Bulb is rated 4.6/5 on Trustpilot.

In the uSwitch Energy Awards 2019 Bulb topped the satisfaction polls in three categories: 'Easiest to Switch to', ‘Best Deal for You' and ‘Best Green Services'.


Our advanced, scalable and proprietary technology enables Bulb to operate significantly more efficiently than in the typical utility model. We've automated a significant proportion of back-office activities, allowing our Energy Specialists to focus on member-facing tasks. We use technology to help our members serve themselves and each other and to seek out new members. Together, our growing team of in-house designers, researchers and technologists work to create the best possible customer experience, which contributes directly to our Trustpilot score.


Bulb has been named the fastest growing private company in 2018 and 2019 by online investment platform Syndicate Room.

Bulb was part of the 2017 cohort of Tech Nation Upscale, a programme powering some of the fastest growing UK tech companies on their scaling journey. named us 2017 Start-Up of the Year and put us Number One in the 2018 startups 100 list.

Bulb uses technology to find new ways to help people lower their bills and cut carbon emissions. In 2019 Bulb developed asmart tariff, launched a product for solar exporters and built a tool to help you calculate and offset your personal carbon emissions.


For every new member who joins Bulb we raise £2 for Bulb Foundation. The Foundation uses that money to make grants to charities and social enterprises tackling the climate crisis head on.

Bulb and long-standing charity partner Trees for Cities won “Best corporate social responsibility project” in the Charity Times Awards 2018 for their work to create Edible Playgrounds in schools across the country.