Under the Uniform Network Code (UNC), Shippers are incentivised to balance their system inputs and outputs and make accurate nominations using the Gemini system.
Financial Energy Balancing charges, invoiced via Xoserve, may be incurred if Shippers are unable to balance their portfolio by the end of the gas day.
The summary document provides an overview of the Energy Balancing Charges: Scheduling and Imbalance Charges
Access the latest operational data including real time flow data.
These notices and warnings, issued by National Grid NTS, provide information regarding risks to the end of day NTS physical system balance.
Operating Margins gas would typically be used to maintain NTS system pressures before other balancing measures become effective, in situations where not meeting safe operating pressure could be a concern. This page provides further information including details of the tender process.
System management actions may be taken at NTS Exit Zone level. Details of Exit Zones and information regarding NTS Constraint Actions including process overviews are available here.
National Grid Gas, in its role as System Operator for the NTS has a role in the identification and management of Unaccounted For Gas. This information is aimed at all those in the gas community with an interest in Unaccounted for Gas (UAG).
Safety Monitors define levels of storage space and deliverability that must be maintained through the Gas winter period. The focus of the Safety Monitors is public safety rather than security of supply. They provide a trigger mechanism for taking direct action to avoid a potential gas supply emergency.
A Network Gas Supply Emergency (NGSE) may be caused by unforeseen circumstances such as pipeline or equipment failure, or where system demand exceeds either total supply or planned system capacity.
Further information regarding NTS Emergency Arrangements and the processes relating to Emergency Curtailment Quantities (ECQ), Storage Curtailment Compensation Arrangements and Post Emergency Claims are accessible via these pages.
Please note these details relate to NTS Network Gas Supply Emergencies only and do not cover local emergencies, which will be managed by the relevant Distribution Network.
Further information and links to the GB REMIT website are available here.