Authority determination to adjust Black Start Costs incurred in 2017/18

This letter sets out the Authority’s decision to direct an adjustment of £0 to the term BSTAt of National Grid Electricity Transmission plc’s licence for relevant year 2017/18 in accordance with Special Condition 4G.21. This decision means that the Electricity System Operator can recover £57,743,277.99 of costs incurred to procure black start services in 2017/18.