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Contact Us 

The SEMO Helpdesk provides an information service for all interested parties.

SEMO Helpdesk availability:  Mon-Fri from 9:00am - 5.00pm.

Email

Phone

The SEMO Helpdesk is available Mon-Fri from 9.00am until 5.00pm. We operate a voicemail service if we are unavailable.

ROI: 1800 726 772

NI: 0800 072 6772

International: +353 1 237 0584


 

Fax

If you are required to fax information to us, our fax numbers are:

  • ROI: +353 1 526 6416

Post

If you are required to post information to us please use the relevant address below:

  • SEMO Customer Service                   
  • 160 Shelbourne Road                        
  • Ballsbridge
  • Dublin 4
  • D04 FW28
  • Republic of Ireland
or
  • SEMO Customer Service
  • Castlereagh House
  • 12 Manse Road
  • Belfast BT6 9RT
  • Northern Ireland

If you are visiting us please see below links to a interactive Google maps displaying both our locations:

Castlereagh House, Belfast Interactive Map

The Oval, Dublin 4 Interactive Map

Complaints Procedure

If you are unhappy with the quality of service you have received, you have the right to complain. Please direct these complaints to info@sem-o.com and your complaint will be addressed.

As per the Trading & Settlement Code participants may raise a dispute in respect of a Data or Settlement query. For further information please see
http://www.sem-o.com/MarketRules/ and review Agreed Procedure 14 – Disputes.

Please view SEMO's full Customer Charter here.

 





SEMO is a joint venture between EirGrid PLC and SONI Limited