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    • Markets

      An overview of how the SEMOpx electricity markets operate and the timelines they work on.

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    • Market Data

      View the full range of static and dynamic reports available to download.

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      See dynamic report tables and graphs for latest auctions, which can be viewed online or downloaded.

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      Market related documentation and Trading & Technical documentation.

  • Rules & Monitoring
    • Rules & Monitoring

      SEMOpx is governed by a set of rules and operating procedures that set out the obligations on Exchange Members and process for trading on the exchange.

    • Market Rules

      Latest approved SEMOpx Rules, Procedures and any approved Modifications.

    • Modifications

      Modifications to the SEMOpx Rules.

      • Exchange Committee
      • Submit a Modification Proposal
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    • Join the Market

      Find registration information for a company to participate in the Day-Ahead and Intraday Market.

    • How to Join

      To trade on SEMOpx Day-Ahead and Intraday Markets you need to complete the application process

    • SEMOpx Fees

      Competitive, simple fee structure to participate and trade on the exchange.

    • Training

      Information on all aspects of Single Electricity Market.

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News

    • 4 March 2025

    Monthly Market Report November 2024

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    • 4 March 2025

    Monthly Market Report October 2024

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    • 3 October 2024

    Monthly Market Report September 2024

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    • 4 September 2024

    Monthly Market Report August 2024

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    • 6 August 2024

    Monthly Market Report July 2024

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    • 2 July 2024

    Monthly Market Report June 2024

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    • 6 June 2024

    Monthly Market Report May 2024

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    • 8 May 2024

    Monthly Market Report April 2024

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SEMOpx Power Exchange 2025

Republic of Ireland

The Oval, 160 Shelbourne Road, Ballsbridge, Dublin 4, D04 FW28.

Northern Ireland

Castlereagh House, 12 Manse Road, Belfast, BT6 9RT.
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Republic of Ireland

The Oval, 160 Shelbourne Road, Ballsbridge, Dublin 4, D04 FW28.

Northern Ireland

Castlereagh House, 12 Manse Road, Belfast, BT6 9RT.
  • Subscribe
  • Market Messages
  • Events
  • News
  • Glossary
  • About SEMOpx
  • Privacy Statement
  • Cookies
  • Disclaimer
  • Web Accessibility
  • Site Map