Green gas and electricity supplier.
Rated 4.8 out of 5 on Trustpilot.

Which do you choose: energy that harms the planet or energy that doesn’t? Exactly. 100% of Bulb’s electricity is renewable. And our gas is 100% carbon neutral. Win win.

By going green, the average Bulb member lowers their carbon impact by 3.5 tonnes of CO2 a year. That’s the hard work of around 1,770 trees.

The biggest green supplier

We're proud to be the UK's biggest green supplier. We provide our members with 100% renewable electricity from solar, wind and hydro. Plus, our gas is 100% carbon neutral. 10% is green gas produced from renewable sources like food or farm waste. And we offset the rest of the gas we supply by supporting carbon reduction projects around the world.

Independent generators

We buy our energy from independent renewable generators from across the UK, like Gail and Miles from Old Walls Hydro in Dartmoor. Wherever possible, we have direct relationships with these generators to purchase their electricity. We buy the rest from the wholesale market. We source our energy from solar, wind and hydro. They're a pretty impressive bunch, our generators.

Get to know our generators

Environmentally friendly


Renewable electricity

Trusting your energy supplier

For us, giving great service is first, last and everything. We’re chuffed to be rated 4.8 out of 5 with over 10,000 reviews on Trustpilot.

The UK's fastest growing energy company

Over 20,000 five star reviews

Secure online account

One low tariff for all. Phew

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.

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