Product update

We’re building a carbon calculator: help test it

We’re building a new tool where you can calculate your carbon emissions, understand how to reduce them, and offset what you can’t. Find out what it is and how you can get involved.

Bulb is on a mission to help people lower their energy bills and cut carbon emissions. We achieve this by supplying 100% carbon neutral energy to all our members as standard. This means there are no carbon emissions from the energy our members use at home. But home energy use only accounts for around 25% of the average person’s emissions in the UK.  We all cause carbon emissions that are much harder to avoid. The greenest unit of energy is the one you don't use. So we’re building a tool to help people understand their carbon footprint, learn how they can reduce it, and offset the emissions they can’t. We’re calling it the Carbon Calculator.

We’d love your feedback

We think the Carbon Calculator will be useful – but to be sure, we need your help. If you sign up for early access we’ll share the latest project news, and you’ll get a chance to test an early version as soon as it’s ready. It’ll be a bit rough around the edges, but with your feedback we’ll build something simple and useful, which should help people to make impactful changes.

You don’t have to be a Bulb member to sign up to test the Calculator, so pass it on to friends you think will be interested.

Reduce first, offset second

It can be difficult to understand the impact each of us has on the planet. We hope this tool will make this clearer, as well as helping us take responsibility for the parts of our lives that are harder to change. 

Our approach to building the carbon calculator is similar to how we buy green gas at Bulb. We reduce emissions by supplying as much gas from renewable sources as we can – we bought 40% of the green gas available in the UK last year. For now, this is 10% of the gas we supply. So we take responsibility for the emissions we can’t avoid in supplying non-green gas by carbon offsetting.

It’s important to reduce emissions as much as you can first because carbon offsetting alone isn’t enough to solve climate change. But carbon offsetting is the best solution we currently have to take responsibility for emissions you cannot avoid. And we agree with the UN that it’s one of the things we can do to keep global temperature rise below 1.5°C, which we need to do to avoid the most catastrophic impacts of the climate crisis.

We're excited to help our members, and others, learn more about their carbon impact, and for the change we believe we can create in doing that.


You can read more about carbon offsets in our Help Centre.

What would you like to see in Bulb’s Carbon Calculator? What are the most effective ways you've found to reduce your carbon footprint? Join the discussion in the Bulb Community.