What is a Capacity Market Notice not?
A Capacity Market Notice is not a dispatch signal for Capacity Market participants to take specific action. Where the Capacity Market Notice is triggered by "Margin below threshold set out in Capacity Market Rules" this has been calculated and issued automatically using the latest data available from the industry for four hours ahead of the current time. Such data will be updated by industry participants closer to the relevant time and may result in challenges associated with the system margin improving.
Where the Capacity Market Notice is triggered by either a "Demand Reduction Instruction" or "Low Frequency Disconnection" National Grid ESO systems will communicate a Capacity Market Notice for four hours' time, where one is not already active.
Regardless of the trigger event for the Capacity Market Notice all industry participants are advised to make themselves aware of other operational information available to the industry (such as BM Reports).