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 Who To Register With? 


Registration for the Balancing Market, Day-Ahead and Intraday Markets, and Capacity Market is centralised and coordinated through the I-SEM Registration Team. Participants in the Day-Ahead and Intraday Markets are also required to register with the European Commodity Clearing. Registrations for the Forwards Market and FTR auctions are managed directly by the respective market operators.


Important! Participants are strongly encouraged to submit their applications as early as possible. In particular, registration for the DAM and IDM involves meeting ECC “Know Your Customer requirements” and contracting a Clearing Member/Settlement Bank which can take a number of months to complete. 

Key Registration Contacts

Key contacts for each market are provided below

Further Information

The I-SEM Registration Team will hold a Q & A session mid - late April to answer any queries you have with regard to the registration forms. If you require immediate clarification, please contact the I-SEM Registration Team.

Email Correspondence:

Phone Correspondence:
If you have any questions on the application process or details please contact:
1800 726772 (ROI) or 0800 0726772 (NI)
+353 (1) 2370584 (International)

SEMO is a joint venture between EirGrid PLC and SONI Limited