The fuel mix for the year 1 April 2016 to 31 March 2017 is shown below.
|Extra Energy||UK average|
|CO2 emissions (g/kWh)||298.0||254.0|
|high-level nuclear waste (g/kWh)||0.00079||0.00147|
The fuel mix values are the same as GB Residual Fuel Mix, which likely means the supplier does not have any generator declarations for the sources of the electricity they are supplying.