If any of the generators in a zone are curtailed the ANM operation column in the table above will go amber for that zone. If any of the generators in a zone are stopped the ANM operation column in the table will go red for that zone. If the SHEPD control room has turned off all or part of the system it will show ‘ANM off’ or ‘Zone off’. If there are any Scottish Hydro Electric Power Distribution (SHEPD) equipment failures the zone will go red in the SHEPD equipment column. If there are any potential issues with the communications to one or more generator sites then the Generator Site Issues column will go red.