Security and Quality of Supply Standards

The Security and Quality of Supply Standards set out criteria and the methodology for planning and operating the National Electricity Transmission System (NETS).

ID Name Status Last updated Sort ascending
GRS024 National Grid Legal Separation Changes Current 9 Jul 2018
GSR023 Clarification of the N-1-1 Requirements and minor housekeeping change Current 25 Jun 2018
GSR017 GSR017: Treatment of Switch Faults in Operational Timescales Concluded 31 May 2018
GSR018 GSR018: Treatment of Sub-Synchronous Oscillations SSO in the NETS SQSS Concluded 31 May 2018
GSR019 GSR019: Review of Chapter 7 Double Busbar Requirements Concluded 31 May 2018
GSR020 GSR020: Modification of Clause to Allow Single Transformer Offshore Substations of Capacity Greater Than 90MW Concluded 31 May 2018
GSR021 GSR021: Operational and Planning Criteria for 220kV Transmission Assets Concluded 31 May 2018
GSR022 GSR022: Review of Security and Economy Required Transfer Conditions Current 31 May 2018
GSR008 GSR008: Regional Variations and Wider Issues Concluded 31 May 2018
GSR010 GSR010: Review of Onshore Entry Criteria Concluded 31 May 2018