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

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        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.

      • Market Rules

        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.

      • 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.

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        Information on all aspects of Single Electricity Market.

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  1. Modification Proposal Form

    24/04/2023

    Portable Document Format (PDF) pdf 270.3 kB

     Download
  2. Monthly Market Report March 2023

    05/04/2023

    File /documents/general-publications/monthly market report march 2023 157.0 kB

     Download
  3. NEMO Designation Order for EirGrid plc

    31/03/2023

    Portable Document Format (PDF) pdf 423.9 kB

     Download
  4. ETS Client 3.6.8.1028.exe.zip

    27/03/2023

    XML Document zip 15.6 MB

     Download
  5. ETS Client 3.6.8

    21/03/2023

    XML Document zip 15.9 MB

     Download
  6. SEMOpx Client Installation (3.6.8)

    06/03/2023

    Portable Document Format (PDF) pdf 4.4 MB

     Download
  7. ETS Trader Client Guide for SEMOpx (3.6.8)

    06/03/2023

    Portable Document Format (PDF) pdf 6.3 MB

     Download
  8. SEMOpx ETS 3.6.7 API-Package v1.00

    06/03/2023

    XML Document zip 3.9 MB

     Download
  9. RELEASE NOTE_ETS 3.6.8 Go-Live Date and Details

    06/03/2023

    Portable Document Format (PDF) pdf 149.0 kB

     Download
  10. SEMOpx-Auction-Timings-and-Market-Messages-v5.0.pdf

    02/03/2023

    Portable Document Format (PDF) pdf 480.5 kB

     Download
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Semo Logo

SEMOpx Power Exchange 2023

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