Single Electricity Market Operator
Headquarters The Oval, 160 Shelbourne Road, Ballsbridge, Dublin 4, Ireland
Location(s): Dublin, Ireland
Date of foundation: 10 June 2004

Director of Market Operations and General Manager:

Rodney Doyle
Traded commodities and traded volumes:  


Current number of employees: n/a
Annual report(s): n/a



The Single Electricity Market (SEM) is the wholesale electricity market operating in Ireland and Northern Ireland. As a gross mandatory pool market operating with dual currencies and in multiple jurisdictions, the SEM represents the first market of its kind in the world.

The SEM provides for a competitive, sustainable and reliable wholesale market in electricity aimed to deliver long-term economic and social benefits that are mutually advantageous to Northern Ireland and Ireland.

In August 2004 a Memorandum Of Understanding (MOU) was signed by the CER and NIAUR. The MOU established a series of principles for the development of a market for Ireland and Northern Ireland. In November 2004 a development framework for the All Island Market for Electricity was agreed upon by the Irish Department of Communications, Marine and Natural Resources (DCMNR), the Northern Ireland Department of Enterprise, Trade and Development (DETI), the CER and NIAUR.

An additional MOU was agreed upon in June 2005 between the respective TSOs. EirGrid and SONI committed to combining their resources to work cooperatively towards the establishment of the SEM and the agreement between EirGrid and SONI to establish the market was formally acknowledged and approved by the Regulatory Authorities in both jurisdictions on the 10th of June 2005.

Member of the Europex General Assembly

Rodney Doyle, Director of Market Operations and General Manager

Europex contact person

Michael Kelly

  • +353 1 2370242


General contact details

  • SEMO – Single Electricity Market Operator

    The Oval

    160 Shelbourne Road, Ballsbridge

    Dublin 4


  • +353 1 237 0468