The information below constitutes the "fuel mix data disclosure data table", as defined in the Electricity (Fuel Mix Disclosure) Regulations 2005. The data are for the disclosure period 1 April 2010 to 31 March 2011.
You can read more about fuel mix in the Ofgem: Fuel Mix Disclosure by suppliers in Great Britain – guidelines. (*)
1. Transmission and distribution loss factor (not to be applied to embedded generation)
1.09
2. Residual fuel mix (see Paragraph 10 of the regulations)
|
Energy Source
|
%
|
|
Coal
|
35.7
|
|
Natural gas
|
48.9
|
|
Nuclear
|
5.2
|
|
Renewables
|
6.5
|
|
Other fuels
|
3.7
|
3. Environmental impact (see paragraph 11 of the regulations)
Carbon dioxide emissions
|
Energy source
|
g/kWh
|
|
Coal
|
910
|
|
Natural Gas
|
400
|
|
Nuclear
|
0
|
|
Renewables
|
0
|
|
Other
|
620
|
|
Overall average
|
450
|
High-level radioactive waste
0.010 g/kWh
4. UK fuel mix (for comparison)
|
Energy source
|
%
|
|
Coal
|
28.9
|
|
Natural Gas
|
44.2
|
|
Nuclear
|
17.3
|
|
Renewables
|
7.9
|
|
Other
|
1.7
|
Related documents
* Note that under the new licences introduced on 1 August 2007, fuel mix disclosure is supply licence condition 21 in place of licence condition 30A quoted in the guidelines.
The methodology for the UK fuel mix are outlined in the document below: