Question to the Department for Business, Energy and Industrial Strategy:
To ask the Secretary of State for Business, Energy and Industrial Strategy, what proportion of generating units that have signed capacity agreements list their primary fuel type as diesel.
Since the most recent Capacity Auctions (Winter 2016/17), Capacity Market Units have been required to specify their primary fuel type.
In both Winter 2016/17 auctions (the four-year-ahead (T-4) Auction and the Early Auction), Capacity Market Units identifying as ‘diesel’ accounted for just over 1% of the total capacity secured, but only a tiny fraction (55MW, 0.05%) were new projects.
A further breakdown of this figure is outlined as such (all figures in this table have been rounded up or down to the nearest whole number):
| 2016/17 T-4 Auction | 2016/17 Early Auction |
Total capacity of generating units listed as diesel | 702 MW | 724 MW |
Capacity of new build diesel units | 20 MW | 35 MW |
Capacity of Open Cycle Gas Turbine units listed as diesel | 605 MW | 566 MW |
Capacity of Reciprocating engines listed as diesel | 89 MW | 78 MW |
Capacity of Demand Side Response listed as diesel | 8 MW | 23 MW |
Some Capacity Market Units specify their primary fuel type as ‘gas or diesel’ – these are not included in the above figures.