Key facts about Bulb


Bulb's mission is to help its members reduce their bills and their carbon impact.


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.


We're now the UK's fastest growing energy supplier, providing 100% renewable electricity and 10% green gas to more than 1,000,000 members across the UK. Our electricity is sourced from independent, renewable generators from across the UK, including six independent hydroelectric power stations in Wales and Scotland.


We have 270 employees. All based in London. We're a Living Wage Employer and a certified B Corp, which means we adhere to rigorous standards of social and environmental impact. We were named one of the top 25 UK tech startups to work for in 2018.


We are rated 4.8 out of 5 on TrustPilot.

We were runner up to Supplier of the Year in the uSwitch Energy Awards 2018, with a customer satisfaction score of 92%. We won six awards from uSwitch including "Best Value for Money", "Easiest to Switch To" and "Best Account Management". We came 6th out of 31 suppliers in the 2018 Which? satisfaction survey, the biggest public survey of its kind. We scored 4.2 (out of 5) in the most recent customer service rankings from Citizens Advice.


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 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 Labs is our way of learning about new technologies that could help our members reduce their bills and their carbon impact in the future. Our latest experiment is a 3-rate smart tariff, designed to reflect the true cost of energy as it changes through the day. By making the real cost of energy more visible, members who took part in our initial trial were able to understand and better manage their energy usage to reduce their bills.


For every new member who joins we donate £2 to the Edible Playground project, an initiative that was awarded "Best corporate social responsibility project" in the Charity Times Awards 2018.