User guide to Secondary Trading via the Capacity Market Platform (CMP)
Affected Period
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Closed
Category
Capacity
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Dear Capacity Market Participant,
The System Operators have published a user guide to Secondary Trading via the Capacity Market Platform (CMP).
This user guide will bring CMP users through the new Secondary Trading module that is expected to be released into the CMP later this month. This guide includes a step-by-step process of how to submit Secondary Trades via this module, as demonstrated in the training sessions held on 2nd April and 14th April.
The System Operators would like to thank Participants for their engagement on the new Secondary Trading module as part of these training sessions. As a result of limited further questions being submitted, the Secondary Trading feedback session, scheduled for tomorrow, 21st April 2026, at 10:00, will not proceed.
The System Operators welcome any further questions that Participants may have in advance of the release of the Secondary Trading module, which is expected to be live from the 30th April 2026. A market message will issue in advance of this confirming the go-live date.
Up until the release of the Secondary Trading module, Participants can continue to use the current process for Secondary Trades, including for periods that occur after the proposed release date.
Following the release of the Secondary Trading module, all users with existing trading rights (CMPT users) will be able to submit Secondary Trades directly through CMP. The System Operators recommend that all Participants carry out a review of all CMP user rights on a regular basis to ensure that all user accounts are up-to-date.
If you have any questions on the Secondary Trading module that are not addressed in the user guide, please let us know by contacting us at capacitymarket@sem-o.com.
Kind regards,
Capacity Market Team