In this letter, we set out our decision to direct National Grid Electricity Transmission (NGET) to amend the Supplemental Balancing Reserve (SBR) Procurement and Operational Methodologies in accordance with Special Licence Condition 4K Part G of the NGET Transmission Licence.
These amendments are to make SBR available from the 31 October 2016 due to an exceptional change in circumstances since the methodologies were approved, one day earlier than the 1 November 2016 specified in the current approved versions. No other aspect of either methodology is to be affected.