MARKET SYSTEM RELEASE UPDATE

Modifications Committee Meeting

31 January 2012

• Scope for SEM R1.10.0 was as follows:

• Release was deployed successfully on Friday October 21st, 2011 in conjunction with the deployment of the new Auction Management Platform (AMP).

SEM R1.10.0 – Oct. 2011

Change Request Description

SEM_PC_CR172 MIUN Calculation

• Scope for SEM R1.11.0 was as follows:

• Release was deployed successfully on December 15th, 2011.

• Change Requests were raised during testing with AMP.

• Changes were delivered by MIUN Calculation solution vendor and not CMS vendors (ABB / Navita).

• Changes did not impact on interfaces between the CMS and Participant systems.

SEM R1.11.0 – Dec. 2011

Change Request Description

SEM_PC_CR282 RUN_TYPE on SFTP D+1 MIUN Files

SEM_PC_CR283 Import of IUNs from MI

• Scope for SEM R2.0.0 is as follows:

• SEM_PC_CR284 added to scope on Dec 2nd 2011. Change to the vendor design to ensure alignment of IDT solution with High Level Design Summary agreed at the Modifications Committee.

• SEM_PC_CR287 added to scope on Dec 12th, 2011. Minor change included to align with the T&SC and to ensure Participants could effectively manage Credit Cover under IDT.

SEM R2.0.0 – Intra-Day Trading - Scope

Change Request Mod Ref Description

SEM_PC_CR222 18_10 Intra-Day Trading

SEM_PC_CR244 SO Security (Option 1)

SEM_PC_CR256 43_10 Variable Price Taker Generator Units and Firm Access

SEM_PC_CR284 18_10 Data to be Utilised when MSP Software Cancellation Run occurs

SEM_PC_CR287 Inclusion of Breach Amount in the Credit Risk Report

• Major activities and associated schedule for the project are as follows:

• The project is on schedule across all workstreams.

* subject to successful completion of testing

SEM R2.0.0 – Intra-Day Trading – Project schedule

Activity Schedule Status

Detailed Requirements Dec 1st , 2010 – Apr 30th, 2011 Complete

Vendor Detailed Design May 1st, 2011 – Jul 29th, 2011 Complete

Design Deliverables Issued to Participants (MPUD etc.)

Aug 29th, 2011 Complete

Participant Engagement Plan published Sep 9th 2011 Complete

Participant Systems Design Workshops Sep 28th, Oct 5th 2011 Complete

Vendor Implementation Jun 20th, 2011 – Nov 11th, 2011 Complete

Factory Testing Nov14th, 2011 - Dec 23rd, 2011 Complete

System Integration Testing Jan 3rd, 2012 - Apr 27th, 2012 In Progress

Market Trial Apr 30th, 2012 – Jul 6th, 2012

Deployment Jul 20th, 2012*

• Major activities and associated schedule for the Technical Workstream:

SEM R2.0.0 – Intra-Day Trading – Technical Workstream

Activity Schedule StatusTechnical Infrastructure Design Apr-May 2011 Complete

Hardware Procurement Jun-Jul 2011 Complete

Hardware Installation (EirGrid & SONI) Aug-Sep 2011 Complete

Data Network Commissioning Oct 2011 Complete

Non-Production Test Environments Build Nov 2011- Feb 2012 In-Progress

Data Centre Capacity Uplift (SONI) Feb-Mar 2012 In-Progress

Production Environments Build (Eirgrid & SONI) Jan 2011-Feb 2012 In-Progress

Infrastructure Technical Testing Feb-Mar 2012

High Availability & Disaster Recovery Testing Mar-Apr 2012

Operational Acceptance Testing May-Jun 2012

Go-Live Migration Rehearsals May-Jul 2012

Go-Live Jul 20, 2012

• The Modification Proposals approved for inclusion in scope for SEM R2.1.0 are as follows:

SEM R2.1.0 – Oct. 2012

Mod Ref CR Ref Description

Mod_40_10 SEM_PC_CR254 Differentiation between Dwell Times and Dwell Trigger Points While Ramping Up and Ramping Down

Mod_42_10 SEM_PC_CR255 Changes to the Single Ramp-Up Rate and the Single Ramp-Down Rate calculation.

Mod_01_11 SEM_PC_CR258 UI Payments for Generator Units.

Mod_06_11 SEM_PC_CR259 Increasing maximum daily submission number and automating cancellation of Settlement Reallocation Agreements.

Mod_10_11 SEM_PC_CR274 Interconnector Under Test.

Mod_12_11 SEM_PC_CR275 Interconnector Unit Loss Adjustment when Exporting

Mod_21_11 SEM_PC_CR280 UI Payments for Generator Units Constrained On

SEM R2.1.0 – Oct. 2012

• The release cut-off date for the October 2012 release to the Central Market Systems was Friday, November 18th, 2011.

• Two meetings of the Change Control Forum (CCF) were held to determine the non-T&SC release scope, i.e. Changes routed through the SEM Design Service (SDS).

• A SEM R2.1.0 release scope proposal paper has been issued to the RAs outlining the complete release scope.

• Once approval has been received from the RAs the release scope will be published to the industry.

SEM R2.2.0 – Apr. 2013

• The release cut-off date for the April 2013 release to the Central Market Systems is : Friday, June 22nd, 2012

• All approved Modifications Proposals will be allocated to this release (subject to available capacity).