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Information from the Intraday Trading

section of the SEMO Website

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TABLE OF CONTENTS

TABLE OF CONTENTS ............................................................................................ 2

1 DOCUMENT CONTROL DETAILS ..................................................................... 3

2 INTRODUCTION ................................................................................................ 3

3 IDT LANDING PAGE .......................................................................................... 4

Intra Day Trading ................................................................................. 4

4 MODIFICATION PROPOSAL ............................................................................. 6

4.1 Phase I: High Level Design ............................................................... 7 4.2 Phase II: Detailed Design............................................................... 10

5 PROJECT IMPLEMENTATION ........................................................................ 13

5.1 Systems Implementation ............................................................... 14 5.2 Participant Training ....................................................................... 15 5.3 Participant Readiness .................................................................... 16 5.4 Market Trial .................................................................................. 17 5.5 Cutover ....................................................................................... 19

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1 Document Control Details

Revision History

Version Date Contributor Summary of Changes / Reason

1.0 11.09.2013 Customer

Service

The Intraday Trading webpages are being removed

from the SEMO website as of September 2013 – this

document is being used to record the content that

was published on these pages.

2 Introduction During the course of the Intraday (IDT) Trading project, information regarding the

modification proposal and project implementation was published on the SEMO website. Content was published on the following webpages:

IDT Landing Page

http://www.sem-o.com/MarketDevelopment/IDT/Pages/Home.aspx

Modification Proposal

http://www.sem-o.com/MarketDevelopment/IDT/Pages/ModificationProposal.aspx

o Phase I: High Level Design

http://www.sem-o.com/MarketDevelopment/IDT/Pages/Intra-DayTradingPhase1.aspx

o Phase II: Detailed Design

http://www.sem-o.com/MarketDevelopment/IDT/Pages/Intra-DayTradingPhase2.aspx

Project Implementation

http://www.sem-o.com/MarketDevelopment/IDT/Pages/ProjectImplementation.aspx

o Systems Implementation

http://www.sem-

o.com/MarketDevelopment/IDT/Pages/Systems%20Implementation.aspx

o Participant Training

http://www.sem-o.com/MarketDevelopment/IDT/Pages/ParticipantTraining.aspx

o Participant Readiness

http://www.sem-o.com/MarketDevelopment/IDT/Pages/Participantreadiness.aspx

o Market Trial

http://www.sem-o.com/MarketDevelopment/IDT/Pages/MarketTrial.aspx

o Cutover

http://www.sem-o.com/MarketDevelopment/IDT/Pages/cutover.aspx

Intraday Trading went live in the Market in July 2012; therefore these dedicated webpages are no longer required on the SEMO website.

These webpages are being removed as of September 2013. The content from these webpages is being recorded in this word document and will be

made available on the SEMO website under General Publications.

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3 IDT Landing Page

Intra Day Trading

EU Regulation – Regulation 714/2009

Regulation 714/2009 of the European Parliament and Council set out the requirement for Member States to be compliant with EU Congestion Management Guidelines for Cross

Border Trade. The regulation set out requirements for SEM to include:

the establishment of mechanisms for Intraday congestion management of Interconnector capacity in order to maximise trade opportunities and cross border

balancing the allocation of available transmission capacity on D-1 and D after the issuing of the

indicated or actual day-ahead production schedules for day D the implementation of firm transmission capacity rights for medium and long-term

allocations subject the use-it-or-lose-it or use-it-or-sell-it principles at the time of

nomination

SEM Regulatory Decision – SEM Committee Decision SEM-10-011

SEM Committee Decision SEM-10-011 SEM Regional Integration set out the project path for achieving the requirements of the Regulation.

The SEM Committee in their Decision Letter to the Market Operator and System Operator

decided that the RAs would develop a Trading and Settlement Code Modification to facilitate Intraday Trading for submission to the Trading and Settlement Code Modifications

Committee as soon as possible, by end quarter 1 2010. It was decided that the RAs would also set up a Working Group, reporting to the Modifications Committee, which would consider the proposed Modification and any alternatives to it, having due regard to:

The advantages of aligning Intraday Trading arrangements in the SEM with those on the IFA and BritNed

The desire for Intraday Trading to affect ex post SMP, to maximise the incentives for

participants to submit intraday bids The benefits and drawbacks of multiple gate closures and the key timings and

interactions to consider (e.g. initial operations schedule, wind forecasts etc.) The degree to which the SEM design can accommodate multiple gate closures The compatibility of the Project Co-ordination Group (PCG) target model for

continuous Intraday Trading with the SEM design Interactions with explicit forward capacity auction proposals and market coupling

proposals Interactions with dispatch in general and wind dispatch in particular. The merits of UIOLI as against UIOSI

It was also decided that the RAs would bring a proposed Trading and Settlement Code

Modification, which the Modifications Committee has agreed on, to the SEM Committee no later than the end of September 2010.

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The development of the modification can be found here1. The implementation of the market process and system changes can be found here2.

1 Link no longer active as webpage removed, please see Modification Proposal section of this

document instead. 2 Link no longer active as webpage removed, please see Project Implementation section of this

document instead.

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4 Modification Proposal Modification Proposal Modifications Committee - Mod_18_10 Intra-Day Trading

Current Status: Modification Proposal RA Decision Approved

The FRR (Final Recommendation Report) for Mod_18_10_V2 was issued to the Regulatory Authorities on 30 January 2012. The RA Decision was received on 16 February 2012 advising that Mod_18_10_V2 had been RA Decision approved with an effective date of the

11th Scheduled Release. An RA Decision for Mod_34_11 Transition to SEM Intra-Day Trading was also received on 16 February 2012, advising that the proposal had been RA

Decision approved. The effective date will be one week prior to the 11th Scheduled Release.

Mod_18_10 Intra-Day Trading was presented by the RAs to the Modifications Committee at Meeting 29 on 30 March 2010. The proposal sought to initiate work with industry Participants towards implementing the necessary changes to the Market Rules to facilitate

Intraday Trading in SEM. It is for the Modifications Committee to develop a Modification that it deems best meets the

objectives of: Ensuring that Interconnector Users have access to the maximum available transfer

capacity on SEM Interconnectors across a range of time frames

Facilitating Interconnector Users to respond efficiently to wholesale price differentials between the SEM and its neighbouring market

The project was divided into two phases and progressed through a number of Working Group Meetings with Industry participants. Phase I3 of the project High-Level Design included seven Working Group meetings:

All Options Consideration Candidate Options Development

Final Options Development Approval Process

The High-Level Design was approved by the Modifications Committee at Meeting 32 on 25

November 2010. The SEM Committee subsequently issued a Decision Letter to the Modifications Committee on 04 March 2011 approving:

The implementation of an intraday trading solution for SEM as outlined in the High Level Design

The Central Market System changes which are required for Intraday Trading which

will commence in tandem with Modification Committee discussions on the required drafting changes to the TSC. All changes to the TSC will be subject to a final

Modifications Committee vote and subsequently approved or otherwise by SEMC, as is the normal process

The timeframe for roll out of the intraday solution for SEM being mid 2012

Phase II4 of the project Detailed Design is due for completion in Quarter 4 2011 and is being progressed through four Working Group meetings (WG8-WG11). SEMO is currently

developing the drafting of the Intraday Trading High-Level Design in line with the principles previously established in the Detailed Design. The Detailed Design is covered by three functional group topics:

3 Link no longer active as webpage removed, please see Phase I section of this document instead. 4 Link no longer active as webpage removed, please see Phase II section of this document instead.

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Funtional Group 1: Registration and Participant Submissions

Functional Group 2: Other Data Transactions and MSP Software Operation Functional Group 3: Settlement and Credit Risk Management

Modification Proposal Recommended for Approval at Meeting 39

The final Intraday Trading Modification Proposal Mod_18_10_v2 was presented at Modifications Committee Meeting 39 on 06 December 2011. A separate Modification

Proposal Mod_34_11: Transition to SEM Intra-Day Trading detailing the set of transitional arrangements necessary to ensure the smooth transition of the Trading and Settlement

Code in its implementation of the enduring SEM Intraday Trading provisions was also presented at the Meeting. Both Mod_18_10_v2 and Mod_34_11 were Recommended for Approval by the Modifications Committee. The Legal Review Report provided by McCann

Fitzgerald was published in advance of Meeting 39.

4.1 Phase I: High Level Design

Intraday Trading Phase I

Phase I of Intraday Trading saw extensive discussion by industry stakeholders at seven

Modification Working Group meetings, with the original proposal significantly developed via this process. The Intraday Trading High-Level Design Working Assumptions were agreed throughout the various Working Groups.

Overview of Phase I Working Groups:

Working Group 1 was held on 22 April 2010. The key issues discussed were as follows:

Definition of Intraday Trading

Timing and Number of Gate Closures Explicit vs. Implicit Auctions

Price Affecting or Constraints Part or Full Day Auctions

Working Group 2 was held on the 11 May 2010. The key issues discussed were as follows:

Definition of Intraday Trading Questionnaire Result Discussion MO Presentation Discussion

SO Presentation Discussion General Discussion

Working Group 3 was held on the 15 June 2010. The following presentations were given:

RAs-Congestion Management Guidelines Compliance

TSO-AHAG & Congestion Management Update Participants Options TSOs- Min Compliance options & Participant options feedback

SEMO-Options EirGrid- East West Readiness Project Update

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A number of options were presented at the Working Group. The options for Impact

Assessment were grouped into two high level options:

Group options A:

Option 1A-Unused I/C Capacity Reassignment Option 1B-I/C updated bids

Group options B:

Option 2-Split SEM Day

Option SEMO – Split SEM Day for Interconnector Trading. Option TSO1 – Additional Interconnector Trading Opportunities

Option TSO2 – Additional Interconnector Trading Opportunities allowing System Security Actions.

Following Modifications Meeting 29, the RAs published a note on Compliance with the Congestion Management Guidelines and Impact Assessment of Intra-day Options. This

resulted in a discontinuation of assessment of Group Options A. The naming convention of options for impact assessment were changed in advance of Working Group 4 meeting as

follows:

Group B options designated as Option Group 1

Participant Option 3 designated as Option Group 2

Working Group 4 was held on 19 August 2010. The following presentations were given:

EirGrid-Compliance ESBI-Participants Presentation SEMO-High Level Impact Assessment

TSO-High Level Impact Assessment

At the Working Group, it was identified that it would be possible for Option Group 1 to be delivered within the timeframe that was given. It was decided that Option Group 2 be

discarded as it required a fundamental Market change which would not have been deliverable within the given timeframe.

Subsequent to Working Group 4, SEMO circulated a questionnaire to Participants.

Participant responses to the questionnaire were discussed during Conference Call 1 on 03 September. Participant response to Conference Call 1 action items were forwarded subsequently.

Conference Call 2 was held on the 23 September.

Working Group 5 was held on 05 October 2010. The following presentations were given: SEMO-Design:

Option 1: RCUC Gate Closure required in advance of EA2 Gate Window Closure on

TD-1. Option 2: RCUC Gate Closure not required in advance of EA2 Gate Window Closure

on TD-1.

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SSE Renewables & Mutual Energy- Discussion Paper

TSOs-Impact Assessment

The Working Group resulted in agreement to proceed with a working assumption of Option 2 Gate Closures timelines.

Conference Call 3 took place 26 October 2010 to provide Participants an opportunity to

comment on Working Group 6 content.

Working Group 6 was held on 02 November 2010. The following presentations were

given:

SEMO IT-Summary of Systems Impacts SEMO Market Development- Superpositioning vs. Protection

Data Transaction Contingencies MSP Software Run Contingencies Trading Windows & Optimisation Time Horizons

Credit Risk Management (CRM)

There was unanimous agreement that the following options be progressed as assumptions: Superpositioning versus Protection

Option 1 – Superpositioning and Protection

MSP Software Run Contingencies

Option 2B – Cancellation of Runs (WD1 & EA2 before cancellation of EA1

WD1 Trading Window Options

30 hour optimisation period Trading Window begins at 18:00

Credit Cover for Interconnector Units

CRM Hybrid Option 1A for Energy Market exposure (Capacity Market proposals to be

provided at Working Group 7)

Conference Call 4 took place on 12 November 2010 to provide an overview of the draft presentations that would be given at WG7.

Working Group 7 was held on 16 November 2010. The following presentations were given:

Data Contingencies:Active Capacity Holdings Credit Risk Management

TSO Security Issues

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At the Working Group it was decided that SEMO would progress with agreed working

assumption on the treatment of Capacity exposure in the Credit Cover calculations for Interconnector Units.

It was also decided that the TSOs would remove Security Options from Intraday Trading

design and discuss separately with the SEM Committee.

Conference Call 5 was held on 24 November 2010. The purpose of the Conference Call was to enable participants to seek clarification on any issues relating to the Intraday Trading

High-Level Design Document in advance of Modifications Committee Meeting 32.

At Modifications Committee Meeting 32 on 25 November 2010, unanimous support was given to the Intraday Trading High-Level Design. An action was placed on SEMO to proceed

with detailed design based on the High Level Design Summary.

On 02 March 2011, the SEM Committee approval was granted for Mod_18_10 Intraday Trading to be further progressed, with SEMO developing the detailed design.

If you wish to be included in email updates related to Mod_18_10 Intraday Trading you can subscribe using the Alert Me section of the SEMO website5.

4.2 Phase II: Detailed Design

Intra Day Trading Phase II

Phase II of Intraday Trading addresses the detailed design changes developed by SEMO including changes to the MSP software and legal drafting changes to the Trading & Settlement Code and Agreed Procedures. Four Working Group meetings with industry

stakeholder input are expected to deliver a final version of the Modifications Proposal to the Modifications Committee in December 2011. For further detail on the scope of the Phase II Working Groups, please see the Terms of Reference.

Overview of Phase II Working Groups Working Group 8 was held on the 10 May 2011. Functional Group 1 Registration and

Participant Submissions was presented to the Working Group which detailed T&SC changes to:

Interconnector Unit Participation Fees

Interconnector Unit Initial Credit Cover Participant Data Submissions Introduction to Offer Data

Commercial Offer Data

EA1 Gate Window EA2 Gate Window

WD1 Gate Window

Technical Offer Data

5 As IDT went live in July 2012, this Alert Me distribution list is no longer active

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EA1 Gate Window

EA2 Gate Window WD1 Gate Window

Default Data / Starting Gate Window Data

Registration Data Application of the Trading Day Exchange Rate to Offer Data

Working Group 9 took place on 29 June 2011. SEMO presented Functional Group

3 Settlement and Credit Risk Management to the group. A number of TSC and AP changes were presented covering the following:

Prior to Gate Window Closure

Prioritisation of Interconnector Units in Commercial Offer Data

Calculation of Estimated Capacity Price for Interconnectors Calculation of Required Credit Cover Daily Credit Cover Member Private Report

SRA Cancellation Member Private Report

Post Gate Window Closure

Calculation of Offered Credit Exposure Calculation of Available Credit Cover

Available Credit Cover Sufficiency Check Exclusion of PQ Pairs / Calculation of Offered Modified PQ Pairs

Excluded Bids Member Private Report

Post MSP Software Run or Cancellation

Affected Commercial Offer Data Publications Calculation of Traded Credit Exposure

Available Credit Cover Information Provision Effects of MSP Software Run Cancellation Effects of MSP Software Run re-run

Prior to the meeting, SEMO prepared a simple example of the TSC Appendix P drafting,

which formed part of the Functional Group 3 changes. It describes each step of the process for a single Interconnector Unit. Participants were also provided with a comment

spreadsheet to facilitate Participant feedback on the changes proposed. Comments must be submitted within three weeks of the meeting (20 July 2011).

An updated timeline was presented to the Modificaitons Committee at Meeting 37 on 09 August 2011. Following a progress update and discussion on the Intraday Trading

workstream, an action was placed on Participants at the Meeting to provide feedback on the Intraday Trading process.

Extraordinary Conference Call 6: An Extraordinary Conference Call was held on 09 September 2011, in order to allow the

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Modifications Committee to consider using the legal support for Mod_18_10 Intra-Day

Trading, as Modifications Committee approval was necessary for SEMO to instruct McCann FitzGerald to undertake the legal review, and for approval of expenditure in relation to this

work. Conference Call 7:

A conference call to discuss Functional Group 3 feedback was held on 14 September 2011. SEMO issued slides and an example of the Appendix P provisions (10 PQ Pairs) prior to the

call.

Working Group 10 took place on 27 September 2011. SEMO presented the changes associated with FG2 Other Data Transactions & MSP Software, a number of actions were placed on both SEMO and Participants. Topics covered during the meeting include:

EA1, EA2 & WD1 MSP Software Run

EP1 & EP2 MSP Software Runs MSP Software Run Cancellation

Treatment of Energy Limited Units Other Data Transactions

Publications & Reports

Required Credit Cover Query Participants are asked to submit any comments related the FG2, using the comment

spreadsheet, no later than close of business 11 October 2011.

An update reporting the outcomes of WG10 was provided to the Modifications Committee at Meeting 38 on 11 October 2011. SEMO have provided a spreadsheet containing responses

to the Participant comments regarding FG2. Working Group 11 took place on 10 November 2011. SEMO circulated the full drafting

pack on 03 November. At WG 11, SEMO presented slides (which are avaliable in the Working Group Report zip folder above) discussing the following:

Actions from WG10

Commnets on FG2 Drafting Modification Legal Review Transitional Provisions

Conference Call 8 took place on 29 November 2011 from 14:30 -15:30. The call addressed the Participant feedback received regarding the material presented at Working Group 11; specifically comments relating to COD for Interconnector Units in the Ending Overlap

Optimisation Period (EOOP) for WD1. The SEMO slides and the TSO slides to aid the discussion during the conference call were circulated prior to the call. A conference call

note detailing the discussion during the call was circulated for review and published subsequent to the call.

The final Intraday Trading Modification Proposal Mod_18_10_v2 was presented at Modifications Committee Meeting 39 on 06 December 2011 where it was voted on. A

separate Modification Proposal Mod_34_11: Transition to SEM Intra-Day Trading detailing the set of transitional arrangements necessary to ensure the smooth transition of the Trading and Settlement Code in its implementation of the enduring SEM Intraday Trading

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provisions was also presented at the Meeting. Both Mod_18_10_v2 and Mod_34_11 were

Recommended for Approval by the Modifications Committee. The Legal Review Report provided by McCann Fitzgerald was published in advance of Meeting 39.

The FRR (Final Recommendation Report) for Mod_18_10_V2 was issued to the Regulatory

Authorities on 30 January 2012. The RA Decision was received on 16 February 2012 advising that Mod_18_10_V2 had been RA Decision approved with an effective date of the

11th Scheduled Release. An RA Decision for Mod_34_11 Transition to SEM Intra-Day Trading was also received on 16 February 2012, advising that the proposal had been RA Decision approved. The effective date will be one week prior to the 11th Scheduled Release.

If you wish to be included in email updates related to Mod_18_10 Intra-Day Trading you can subscribe using the Alert Me section of the SEMO website6.

5 Project Implementation

6 As IDT went live in July 2012, th Alert Me ‘Mod_18_10 Intra-Day Trading’ distribution list is no

longer active

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5.1 Systems Implementation

Systems Implementation Workshop

A workshop was held on 03 August 2011 to provide Participants with a technical overview of the changes incurred by Intra-Day Trading. This workshop was aimed to give a

high level overview of the impacts on Market Participant systems, in relation to the Intra-Day Trading Project.

Summary of Reporting Changes At the workshop, Participants requested that in advance of the publication of the Market

Participant Update Document (MPUD), SEMO produce a summary of reporting changes relating to the IDT implementation. Participants should be mindful that this publication is purely for information purposes only. It should not be considered a detailed specification

for systems development and will not be maintained going forward. It has been produced to enable Participants to consider the scope of the IDT reporting changes and prepare their

own development plans with these changes in mind. Participant Engagement Plan SEMO is mindful that clear and effective communication is a key factor to the successful

implementation of Intra-Day Trading arrangements in the SEM. Consequently, SEMO is implementing a comprehensive Participant Engagement Plan.

SEMO is responsible for the maintenance and management of the Participant Engagement Plan and welcomes feedback and suggestions in relation to this document at any time. Any correspondence relating to the Participant Engagement Plan should be submitted to the

SEMO Market Helpdesk (Markethelpdesk@sem-o.com), title prefixed with "PEP".

Project Management Forum (PMF) As part of the Participant Engagement Plan, SEMO will host monthly Project Management Forum (PMF) conference calls. Please visit the SEMO calendar for details of the next PMF

conference call. The conference call facilities are as follows: Conference Call Number:

353 1 664 7777 Participant PIN: 79592

Sample Files Participants had requested sample output files from factory testing to assist in validating

their system changes. These are now available here. These files generated by a factory test on a limited data set should be used for illustrative purposes only. The MPUD remains

the definitive document for details on building systems to interface with the CMS. Please click here for access to the zip folder containing the following documents:

Sample Settlement files provided by the vendor and,

An updated version of the Reporting Spreadsheet (issued previously mid August). This spreadsheet contains an additional worksheet detailing interconnector variables

that will be updated as part of IDT. These variable updates will be reflected in the next revision of the MPUD Volume 2 Reporting.

Design Q&A During the previous communications on the Intra-Day Trading (IDT) design, SEMO

committed to publishing queries submitted to SEMO in relation to the design

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documentation (MPUD etc) along with our associated responses. Please click here for the

latest list of design queries and associated responses as at February 29th, 2012. Please note that this documentation should be used only as an aid to the understanding of

the changes and the types of queries being raised – the MPUD will continue to provide the necessary detail to guide Participants in building their interfaces to the Central Market Systems.

Market Participant Update Document (MPUD)

Please click here for the revised MPUD published on February 24th, 2012.

MP Webservices Client Toolkit Version 3.0.0 of the MP Webservices Client toolkit for the Intraday Trading Release is now available here. Please note, Version 3.0.0 of the toolkit will not function with the

current Central Market Systems and will only function following the Intraday Trading Release.

Communication If you wish to be included in email updates related to Systems Implementation please

subscribe to our "Systems & Interfaces" distribution list using the Alert Me section of the SEMO website7.

5.2 Participant Training Participant Training SEMO hosted training for Participants on the changes in SEM market processes as a result

of the introducton of Intraday Trading (IDT).

The target audience of this training was Participant personnel who are involved in the operation of the market processes day to day. The training focused on the changes in the SEM market processes as a result of IDT. As a result, there was a pre-requisite that IDT

training attendees had completed a 'Welcome to the Market Session' training session in advance or had been involved in the current market for some time.

The training was run over a one and a half day course with the following agenda: Day 1

Why Intra-Day Trading? Trading and Settlement Code Changes

Registration Changes Market Processes - Part 1 - A Day in the Life of Pricing Market Processes - Part 2 - Pricing Exception Handling

Day 2 Credit Cover Calculation and Excluded Bids

Worked Examples A & B (Appendix P Provisions) Required Credit Cover Query

To cater for the number of attendees SEMO held three courses of the same training, two in Dublin and one in Belfast.

7 The Systems & Interfaces distribution list is still active and used to communicate current Central

Market Systems information to Participants.

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The final presentation pack includes the following and is now available here: Final Presentation & Appendices

Glossary Appendix P Worked Examples (Appendix P Provisions)

SEMO would like to thank those of you who took the time to complete the course evaluation form, your feedback is an integral part of the evaluation process, and will enable

us to improve future training sessions. If you haven't had the opportunity to complete this form but would like to do so, please click here, and return your completed form to the

Market Helpdesk. SEMO noted all questions asked by Participants during this training. Answers to these questions are detailed in an FAQ document available here.

5.3 Participant Readiness Participant Readiness As outlined in the Participant Engagement Plan (PEP) published by SEMO on September

9th, 2011 there are certain key points in the IDT project schedule at which Participants are to be invited to indicate their state of readiness in the context of the overall programme.

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These indicators are to enable SEMO to effectively manage any potential risk to the overall

programme and put in place: any necessary measures to mitigate any associated risk and/or appropriate contingency measures if required.

Participant Readiness will be requested at the following points throughout the project:

November 2011

End of February 2012 (Two months prior to Market Trial) Mid April 2012 (Two weeks prior to the beginning of Market Trial)

Beginning of June 2012 (mid-way through Market Trial) Beginning of July (towards the end of Market

Trial)

At each of these points, SEMO Helpdesk will contact Participants asking them to coordinate

a single response from within their organisation to give an indication of their readiness in the context of the overall programme. The main aim of readiness checks is to get visibility

of any issues that Participants are encountering with which SEMO may be able to assist to mitigate risk to the overall programme. Responses will be treated in confidence and SEMO will follow-up on Participant responses if

required.

Participants are asked to respond direclty to the markethelpdesk@sem-o.com, subject prefixed with 'IDT Participant Readiness'

5.4 Market Trial Market Trial The Intraday Trading (IDT) Market Trial is an industry wide test phase managed and

coordinated by SEMO.

Market Trial will have a dedicated test team and involve full simulation of Market Operations. There will be two distinct types of testing performed during Market Trial:

Scripted (i.e. against agreed requirements and design); and

Unscripted (i.e. ad-hoc) The objectives of Market Trial are as follows:

test the inter-operability of participant systems and processes with the CMS; test compliance of the participant business systems and processes with their

obligations as defined in the T≻ and

test all market procedures and the ability of Market Participants and SEMO (in its role as Market Operator) to follow these procedures

From a Participant perspective Market Trial may be broken down to two separate activities: Preparation (January 27th to April 27th 2012) Execution (April 30th to July 6th 2012)

Document Pack SEMO published a document pack on February 24th, 2012 to support the initiation of the

Market Trial phase of the SEM R2.0.0 IDT release. Please click here to view this.

This pack includes: Market Trial approach document Market Trial slide pack

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Market Trial Detailed Workplan

The SEM R2.0.0 (IDT) release will have significant impact on Participants and all Participants are urged to familiarise themselves with this documentation pack and take part

in Market Trial. As Market Trial approaches SEMO will issue further relevant documentation (technical details, test scripts etc.) as per the schedule outlined in the documentation pack.

Workshop SEMO hosted a dedicated Market Trial workshop on March 13th, 2012 to give Participants

the opportunity to raise any queries or comments in relation to this documentation pack or the Market Trial phase in general.

Scenario Control Sheet As per the Project Plan set out for the Market Trial phase of the Intra-Day Trading project, SEMO have created a Scenario Control Sheet that will form the basis of the Logical Test

Scripts used during the execution of Market Trial. Please click here to view this. This is a first draft version and we would request any feedback or comments on this document to be

submitted through the Market Helpdesk. Please prefix the email subject with, 'IDT Market Trial Control Sheet'

Market Trial Participation The Market Trial phase for the Intra-Day Trading project is due to commence on April 23rd,

2012. Although Participants are not obliged to take part in Market Trial, SEMO strongly advise that all Participants that make use of the Central Market Systems partake in this Test

Phase. Market Trial will follow exact, or as close to, production timelines.

In preparation for Market Trial, we requested the any Participants that wish to partake in this test phase please notify the Market Helpdesk prior to April 13th, 2012. For Participants who already have a 'pilot certificate' that hasn't expired, it can be used for

Market Trial, but please notify the Market Helpdesk that this is the case. Participants that need new 'pilot certificate(s)' are asked to advise the Market Helpdesk, and to include the

following details for each 'pilot certificate' required; PT_nnnnnn (account ID), contact name, email address and user type. EWIC Participation

During the Intraday Trading Market Trial test phase there will be an opportunity for PT's to trade on the EWIC Interconnector.

In order for us to set this up in our test database we would request that each Participant would notify the Market Helpdesk if they would like to be set up for this in the Central Market Systems.

If you are not an existing PT in the ROI Jurisdiction, then please fill out your required details in the spreadsheet located here and send this back to the Market Helpdesk.

Please note, this process is with regards to Market Trial test phase only and any similar updates required in production (Pre or Post Intraday Trading) should go through the normal business process.

IDT CMS Software Install Guide

SEMO published IDT Type 2 Client Software Install Guide. The set up descibed in this document will be required for participation in Intra-Day Trdaing (IDT) Market Trial and post

IDT release (SEM R2.0.0). Please note, your current IT set up will be required up until the IDT release. Details of the current set up can be found here.

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Logical Test Scripts

For the Market Trial phase of the Intra-Day Trading project, SEMO previously published a Scenario Control Sheet that contained details of the Logical Test Scripts that are to be used

during the execution of Market Trial. Cycle's 1 to 4 of these Logical Test Scripts are now available here. We would request any feedback or comments on this documentation to be submitted through the Market Helpdesk, subject prefixed with 'IDT MT Test Scripts'.

IDT Market Test Environment URL's

SEMO published the IDT Market Test Environment URL's document on April 13th, 2012. Plase note that these URLs will not be availble until the commencement of Market Trial on

April 23rd, 2012. The week of April 23rd is specifically for technical testing which includes Participant connectivity testing.

Conference calls

The IDT Market Trial Conference Call - Technical Workstream Kick-Off was held on Monday April 23rd, 2012 at 10:00. The IDT Market Trial Conference Call - Functional Workstream Kick-Off was held on Monday

April 30th, 2012 at 10:00. From Tuesday April 24th to the end of Market Trial SEMO will host Daily Market Trial

Conference Calls 15:00. Conference call details for all Market Trial calls are as follows:LoCall: 0818 301 111 or Local Access: (01) 664 8888, Customer Pin: 481953.

Updates following these calls will be posted as New Items (click here) on the SEMO website and email alerts sent to Participants that have signed up to Systems &

Interfaces distribution list. Issues Log The Market Trial Issues Log will be published by close of business on a Wednesday and

Friday throughout Market Trial. Click here to view the most up to date version. Communication

In the interim, any comments or queries may be submitted to the Market Helpdesk - please prefix the subject of all email correspondence in relation to Market Trial in general with "IDT Market Trial" – this will ensure the query will be routed quickly to the appropriate

team. If you would like to receive updates regarding IDT Market Trial please sign up to the 'Systems & Interfaces' distribution list via the Alert Me section of the SEMO website8.

5.5 Cutover Cutover Intraday Trading will introduce significant changes to the central market systems (CMS),

from both a technical and functional perspective.

Please click here to view the presentation from the Cutover workshops that were held at the end of June 2012. As requested by Participants during the recent IDT Cutover Workshops, SEMO will host

post IDT Go Live follow up conference calls at 3pm daily from Monday 23rd July to Friday 3rd August inclusive.

8 The Systems & Interfaces distribution list is still active and used to communicate current Central

Market Systems information to Participants.

SEMO Website Intraday Trading Information

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The Conference Call details will be as follows:

LoCall: 0818 301 111 or Phone Number: +353 1 664 8888

Pin: 481953 If you would like to receive updates regarding IDT Cutover please sign up to the 'Intra-Day

Trading - Business Readiness' distribution list via the Alert Me section of the SEMO website9.

9 As IDT went live in July 2012, the Alert Me ‘Intra-Day Trading – Business Readiness’ distribution

list is no longer active