A Bulb energy specialist turns, smiling to the camera, in our naturally lit and bustling office.

The most trusted energy supplier

For us, giving great service is first, last and everything. We're chuffed to be the UK's #1 rated energy supplier on Trustpilot.

Making energy better

Bulb was founded by Amit and Hayden, two friends from the traditional energy industry. They saw how inefficient, confusing and unfair things were for customers. Not to mention the environmental damage. They thought energy could be simpler, cheaper and greener. So they started Bulb.

Learn more about Bulb
A photo of our founders Hayden and Amit smiling for the camera

One low tariff for all. Phew

Too many energy companies confuse customers with lots of complicated tariffs. We like to keep things simple.

With Bulb's single tariff, you know you're getting the best possible price for your energy. In fact, we're one of the cheapest suppliers on the market, renewable or not.

Source: Data provided by Energy Helpline, an independent energy switching site
Based on typical annual consumption of 3,100 kwh electricity and 12,000 kwh gas in the Eastern region

Only 2 minutes to switch and we'll take care of the rest

Keep on top of your energy

Understanding your energy usage helps you to lower your bills, so we make it easy for you.

Keep on top of your energy with your Bulb Account. Sign in online, or download the app. You can track your usage, submit meter readings and check your balance.

And as part of our Community you can chat with other members and share ideas about Bulb. Including how we can improve - we know we're not perfect.

  • Download on the App Store (opens new window)
  • Get it on Google Play (opens new window)

The best kind of energy

Which do you choose: energy that harms the planet or energy that doesn't? Exactly. 100% of Bulb's electricity is renewable, and 10% of our gas is too.

Every year, the average Bulb member saves 1.3 tonnes of CO2 from entering the atmosphere. That's the same as planting 655 trees.

Read more about our energy

Source: Data provided by Electricity Info, an independent energy information site

Doing the right thing

As a certified B-Corp, we meet the highest social and environmental standards. For every new member that switches to Bulb, we donate £2 towards Edible Playgrounds by Trees for Cities, a charity building vibrant, outdoor spaces in inner-city schools.

Photo shows children playing in the edible playgrounds that are made possible by Bulb's donations to Trees for Cities.

Only 2 minutes to switch and we'll take care of the rest

As featured in

The Times

"Bulb bucked the trend"


"Challenger green energy firm"


"The bright startup that's shaking up the market"

The Guardian

"One tariff that's fair for all"