The fuel mix for the year 1 April 2017 to 31 March 2018 is shown below.
|Extra Energy||UK average|
|CO2 emissions (g/kWh)||359.0||231.7|
|high-level nuclear waste (g/kWh)||0.00133||0.00140|
This supplier's published fuel mix for 2017-18 is the GB Residual Fuel Mix, which indicates they have purchased all their electricity from the grid.