It's important to know exactly how your electricity is generated so you can confidently report your carbon emissions and share your sustainability achievements. As well as the basic fuel mix we're required to report, we publish a detailed fuel mix for each product so you know the breakdown of your supply.
Every megawatt hour we supply to customers on our renewable products is from renewable generation and backed with an origin certificate. The fuel mix for these products from April 2019 to March 2020 is shown below, as well as our residual conventional mix and total overall fuel mix.
We've also included definitions of the renewable generation technologies in our supply so you can understand where your electricity comes from. To find out more about some of the independent generators we purchase power from, visit our case studies section here.
Natural Renewable fuel mix
Our Natural Renewable product is for businesses that want to embrace the forces of nature - the sun, wind and water - for their power. The fuel mix for Natural Renewable for 2019/20 was:
(Hydro - 40.0%, Solar PV - 36.3%, Wind - 23.8%)
Scope 2 emissions: 0 gCO2/kWh
Total radioactive waste: 0 g/kWh
Renewable Standard fuel mix
Our Renewable Standard supply product provides electricity from a blend of renewable sources and, like all our renewable electricity, is backed by origin certificates. The fuel mix for Renewable Standard for 2019/20 was:
(Wind - 41.0%, Solar PV - 21.5%, Hydro - 21.0%, Thermal - 16.5%)
Scope 2 emissions: 0 gCO2/kWh
Total radioactive waste: 0 g/kWh
Conventional fuel mix
Once we have allocated all our renewable supply across the products above, what remains is the residual fuel mix for our Conventional customers, which is predominantly from grid sources. Our Conventional fuel mix for 2019/20 was:
(Wind - 27.2%, Solar PV - 23.9%, Thermal - 28.9%, Hydro - 10.7%, Natural gas - 6.7%, Nuclear - 0.8%, Grid average renewables - 0.8%, Coal - 0.6%, Other non-renewable - 0.5%)
Scope 2 emissions: 27.1 gCO2/kWh
Total radioactive waste: <0.000 g/kWh
SmartestEnergy fuel mix
The total fuel mix for our overall supply across all products for 2019/20 was:
(Wind - 31.4%, Solar PV - 26.1%, Hydro - 21.5%, Thermal - 17.3%, Natural gas - 2.6%, Nuclear - 0.3%, Grid average renewables - 0.3%, Coal - 0.2%, Other non-renewables - 0.2%)
Scope 2 emissions: 12.4 gCO2/kWh
Total radioactive waste: <0.000 g/kWh
If you have any questions about our fuel mix or would like to find out more about our renewable products, please get in touch here.
Our generation sources
See below for definitions of the renewable generation technologies included in our supply. Where renewable electricity has been provided, it additionally meets the criteria of Renewable Source Electricity as per the Finance Act 2000.