Constraint Management Intertrip Service Information (CMIS)

This dataset gives information on the arming and disarming of units contracted under CMIS (previously known as Constraint Management Pathfinder). The information is provided for each instance of arming. Time values are all given in local time in GB.

NOTE: Update 13th May 2024: For the below units in East Anglia, the arming fee is on a £/MWh basis which is used to calculate the ‘Cost for this utilisation’ column in the Data Files. For all other units contracted under CMIS - which are in Scotland, they are currently paid on a £/Settlement Period basis. Both sets of units will be shown in the same Data Files.

From October 2024, all CMIS contracts will be priced on a £/MWh basis and the column headings will be updated.

Contracted CMIS units in East Anglia: DDGNO-1, DDGNO-2, DDGNO-3, DDGNO-4, GAOFO-1, GAOFO-2, GAOFO-3, GAOFO-4, GNFSW-1, GNFSW-2.