Where does our electricity come from?

It's really simple. Just 1 source: renewables.

As an independent energy supplier, we don’t generate any power ourselves. All the electricity we supply comes from the energy market, as well as directly from renewable generators across the UK.

All of our renewable electricity is matched by renewable electricity certificates. And in early 2021 we announced two new power purchase agreements. The first is with Orsted, to purchase 100% of the power from Barrow Offshore Wind Farm – and the second is with Eneco, to buy 100% of the power from Crystal Rig Wind Farm in Scotland.

Our electricity sources

100% renewable electricity

As an OVO Energy customer, you’ve received 100% renewable power backed by UK renewable electricity certificates. This means between 1 April 2021 and 31 March 2022, for every unit of electricity your home has taken from the grid, we’ve guaranteed a unit of green power has been added back. 

Here’s where our electricity came from – our ‘fuel mix’ – for the OVO Group between 1 April 2021 and 31 March 2022. This includes Boost and SSE Energy Services, which is why this figure is 29.9% for renewables. As an OVO Energy customer, you have received 100%.

Across the OVO GroupNational Average
Energy Source%%
Coal0.00%3.80%
Natural gas70.10%38.50%
Nuclear0.00%16.10%
Renewables29.90%38.70%
Other fuels0.00%2.90%
CO2 g/kWh261198
Radioactive g/kWh00.0011

Here’s more information about OVO Energy’s electricity sources from 1 April 2021 to 31 March 2022.

OVO EnergyNational Average
Energy Source%%
Coal0.00%3.80%
Natural gas0.00%38.50%
Nuclear0.00%16.10%
Renewables100%38.70%
Other fuels0.00%2.90%
CO2 g/kWh0198
Radioactive g/kWh00.0011

Green power and tree planting

We bring you 100% renewable electricity if you have a smart meter.1 And we plant 1 million trees every year, right here in the UK.2 It’s our Planting Promise.

What if I want to go greener?


Just upgrade to OVO Beyond. The green upgrade that cuts carbon with renewable energy, reduces energy waste and restores nature by planting trees and protecting rainforests. So, on top of 100% renewable electricity as standard, you’ll also get all this green goodness: 

  • 100% carbon-neutral energy to power your home3
  • Tips to cut energy waste and your bills4
  • 5 trees planted for you each year in UK5
  • Protect natural habitats around the world – with our carbon-offsetting projects

Plus, bring nature to city kids by helping them plant 8 Tiny Forests on their doorsteps.

Find out more about OVO Beyond

carbon-neutral energy

What if I want to go greener?


Just upgrade to OVO Beyond. The green upgrade that cuts carbon with renewable energy, reduces energy waste and restores nature by planting trees and protecting rainforests. So, on top of 100% renewable electricity as standard, you’ll also get all this green goodness: 

  • 100% carbon-neutral energy to power your home3
  • Tips to cut energy waste and your bills4
  • 5 trees planted for you each year in UK5
  • Protect natural habitats around the world – with our carbon-offsetting projects

Plus, bring nature to city kids by helping them plant 8 Tiny Forests on their doorsteps.

Find out more about OVO Beyond

carbon-neutral energy
What is carbon offsetting?

What is carbon offsetting?

Carbon offsetting is a clever way to balance out your carbon footprint. Find out more in our guide.

Find out more
Types of renewable energy

Types of renewable energy:

Renewable energy is energy generated from sustainable sources like wind, sun, and water. Read all about them here.

Find out more
Reduce your carbon footprint

How to reduce your carbon footprint

From daily home habits to holidays abroad, discover loads of clever ways to be kinder to the planet.

Find out more

Terms and conditions

1 100% renewable electricity is only available to members who currently have an electricity smart meter or who have a smart meter installed. Book a smart meter installation or find more information. Not all members may be able to have a smart meter installed. Terms and eligibility criteria apply for details. If you are on a fixed contract you will still receive 100% renewable energy until the end of your contract. The renewable electricity we sell is backed by renewable certificates (Renewable Energy Guarantee of Origin certificates, also known as REGOs). Get more details on REGOs and how these work. A proportion of the electricity we sell is also purchased directly from renewable power generators in the UK.

2 OVO Energy plants 1 million trees across the UK each year with its tree planting partners, The Conservation Volunteers and the Woodland Trust. Trees absorb carbon dioxide from the atmosphere, so planting trees helps to slow down climate change.

3 By providing 100% carbon-neutral gas (15% green gas and 85% offset) and offsetting all associated lifecycle carbon emissions involved in the production and consumption of your electricity & gas, OVO Beyond reduces your yearly carbon emissions from the energy used in your home that's supplied by OVO to net zero. The renewable electricity we sell is backed by renewable certificates (Renewable Energy Guarantee of Origin certificates (REGOs)). Details on Renewable Energy Guarantee of Origin certificates and how these work. The green gas we sell is backed via renewable certificates (Renewable Gas Guarantees of Origin (RGGOs)). Details on Renewable Energy Guarantee of Origin certificates and how these work. We offset the remaining emissions by supporting UN REDD+ carbon reduction projects that are certified to the Verified Carbon Standard or the Gold Standard.

4 Bill savings are based on you making changes to your energy habits through your use of OVO Beyond. Actual savings will vary depending on your energy use and the changes you make.

5 OVO plants 5 trees for every OVO Beyond member through our award-winning I Dig Trees programme with The Conservation Volunteers. Trees absorb carbon dioxide from the atmosphere, so tree-planting helps to slow down climate change. Since 2015 we have planted over 1 million trees.