Question

To ask the Secretary of State for Energy and Climate Change, what estimate has been made of the number of (a) Fast Reserve, (b) Short Term Operating Reserve and (c) BM Start up Reserve services triggered by National Grid from units in (i) England, (ii) Scotland and (iii) Wales in each month since July 2010.

The Department does not hold this information. It is the responsibility of National Grid as System Operator to procure enough reserve for the system overall, and procure any system services which might be required for real-time balancing of the system. Further details on these services can be found at:

http://www2.nationalgrid.com/uk/services/balancing-services/.