1. SEMOpx Contact Details Cutover Weekend
Available Saturday and Sunday from 09:00 to 17:00 for all general queries and non-urgent operational issues, and 24 hours a day for emergency operational issues relating to the Day Ahead and Intraday Market.
Query Type*
Available
Phone* (applicable for all options)
Urgent Day Ahead & Intraday Auction Trading (1)
24 hr
Republic of Ireland:
Northern Ireland:
International:
Urgent Day Ahead & Intraday Continuous Trading (2)
General SEMOpx Enquiries (3)
9-5
*You will be prompted to select the relevant query type option 1-3 from the menu

2. Front Office Contact Details Cutover Weekend
Available Saturday and Sunday from 09:00 to 17:00 for all general queries and non-urgent operational issues. *LCF Hotline/ avail 24/7
Query Type*
Available
Phone* (applicable for all options)
General Balancing Market Enquiries
9-5
Republic of Ireland:
Northern Ireland:
International:
General Capacity Market Enquiries
Formal Queries
Market Operations Hotline (SEMO LCF Issues only)
24/7

3. Participant Calls – Saturday & Sunday
Time
Details
Morning Participant
09:30
Conference Dial-in (ROI):  +353 (0)
Conference Dial-in (NI):  +44 (0)
Participant Passcode: 
International Dial-in Numbers: Link Here.
Lunch Participant
12:30
Evening Participant
16:30