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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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      Market related documentation and Trading & Technical documentation.

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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.

    • Modifications

      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

    • 14 January 2026

    SEMOpx - Quarterly EU Energy Market Trends - Q4 2025

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    • 8 January 2026

    Monthly Market Report December 2025

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    • 5 December 2025

    Monthly Market Report November 2025

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    • 4 December 2025

    SEMOpx - EU Energy Market Trends - November 2025

    Read more
    • 27 November 2025

    SEMOpx - EU Energy Market Trends - October 2025

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    • 10 November 2025

    Monthly Market Report October 2025

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    • 8 October 2025

    Monthly Market Report September 2025

    Read more
    • 8 October 2025

    SEMOpx - Quarterly EU Energy Market Trends - Q3 2025

    Read more

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SEMOpx Power Exchange 2026

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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