We take the sun, wind and water, and turn them into power

Why renewable energy?

Generating solar, wind and hydro power doesn’t release any CO2 (the greenhouse gas that’s primarily to blame for global warming). As long as the sun keeps shining, the wind keeps blowing, and the currents keep flowing, there will always be a source of energy.

What’s the alternative?

The alternative to renewable energy involves getting power from burning dirty fossil fuels, which is how the world has been powered since the days of the Industrial Revolution. Coal and oil aren’t just outdated, they’re fossils in every sense of the word - the ancient remains of plants, algae and animals that were put under immense heat and pressure for millions of years. These fossil fuels hold a huge amount of trapped carbon, which is released into the atmosphere when they’re burned. That increase in CO2 creates a warmer planet, leading to extreme weather events and rising sea levels.

Fuel Octopus National Average
Coal 0% 3.4%
Natural gas 0% 39.3%
Nuclear 0% 13.9%
Renewables 100% 40.8%
Other 0% 2.6%
Total 100% 100%

The carbon footprint for a typical British home using a year's worth of electricity at the national average was 574kg of CO2 per year in 2022 -23.

The same electricity for Octopus Energy customers had a carbon footprint of 0.

A row of trees

That’s like planting 287 trees!

How does the renewable energy supply chain work?

In a nutshell, renewable energy is generated and then added to the national grid, where it is mixed with energy from other sources. Finally, this mix is piped out to houses and businesses all over the UK.

It’s important to remember that when you sign up with a renewable energy supplier, they don’t pump green energy through a separate ‘green grid’ straight to your home. Instead, your money goes towards sending more green energy into grid, ensuring that the UK’s energy mix gets greener overall. By choosing Octopus Energy, you are essentially choosing to invest in renewable generation.

On any Octopus electricity tariff...

For every kWh of electricity we supply, we pump extra investment into renewable generation by buying a portion of our energy directly from UK green generators. This includes getting energy from community generators, and our very own green generation via over 300 renewable sites managed by Octopus Energy Generation (making us Europe’s biggest investor in solar energy)! On top of this, we also invest in green generation by buying energy from the open market alongside green REGO certificates to supply our customers with reliable, consistent energy when the sun isn’t shining and the wind isn’t blowing.

If you’re on our Co-op Community Energy tariff…

100% of the electricity that we supply on your behalf will come from community-based renewable energy projects across the country. We currently source energy from 79 sites like this, entirely owned and run by green-minded UK communities. The profits they make from selling their power to us – to you – goes towards creating more community-based renewable energy projects and other local environmental initiatives.

What kind of green energy are we investing in?

Though the specific amounts do vary, here's a breakdown of the different types of renewable generation we invest in:

A pie chart explaining the renewables we invest in: Solar 21%, Wind 75.3%, Hydro 3.7%.

Going beyond renewable generation

Octopus Energy is leading the industry when it comes to developing ‘smart technology’ to help build a more sustainable way of supplying, generating, using energy. The push-and-pull network of tomorrow will be ‘balanced’, allowing us to make the most of the renewable energy we generate, and helping to provide some much needed flexibility in the energy industry.

If you'd like to find out more about the low-carbon energy solutions we install in home across the UK, like solar panels, battery storage and heat pumps, head to our hub:


Read more about our green works

For a detailed explanation of all things we are doing to drive a green energy revolution, check out this page, which covers all the things that make Octopus Energy so very green.

This blog shows what Octopus Energy Generation have recently been doing to advance renewable generation in the UK.

Find out how Agile Octopus, the world's first time-of-use energy tariff, is helping the UK maximise the potential of clean energy, allowing customers to get renewable energy especially cheap when there's plenty of it on the grid, and it might otherwise go to waste.

And, why not learn how we've paired our Agile tariff with smart tech to allow customers to use up all those clean energy electrons without ever having to think about it.

We're on a mission to bring low-carbon transport to the UK - if you think you could switch to a car that doesn't pollute the earth (or your lungs), it might be time to give our friends at Octopus Electric Vehicles a call.

Find out how we joined forces with veterans at the Green Task Force to plant an incredible 20,000 trees, in support of veteran mental health.

And there's plenty more. Just head to our blog to read about everything from energy crisis information and energy storage to our green partnership with Arsenal FC.

Hey I'm Constantine, welcome to Octopus Energy!