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      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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    • 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.

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      Latest approved SEMOpx Rules, Procedures and any approved Modifications.

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      Modifications to the SEMOpx Rules.

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    • Join the Market

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

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

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      Information on all aspects of Single Electricity Market.

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News

    • 8 August 2025

    Monthly Market Report July 2025

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    • 10 July 2025

    Monthly Market Report June 2025

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    • 13 June 2025

    Monthly Market Report May 2025

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    • 9 May 2025

    Monthly Market Report April 2025

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    • 8 April 2025

    Monthly Market Report March 2025

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    • 10 March 2025

    Monthly Market Report February 2025

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    • 4 March 2025

    Monthly Market Report January 2025

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    • 4 March 2025

    Monthly Market Report December 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