IGG Agenda – August 10th 2006 Minutes from last IGG meeting 10.00 – 10.15 Review of Action Items 10.15 – 10.30 CER Update 10.30 – 10.45 CER Update SEM Update Gemserv Update 10.45 – 11.00 Market Operations Update 11.00 – 11.30 Networks AIM Project Update 11.30 – 11.50 Retail Market Design Service Update 11.50 – 12.00 Market Design Update 12.00 – 12.20 Future Release of Market systems Discussion Requests & Market Change Requests TAG Update 12.20 – 12.30 Next release of XML Schema Next Steps 12.30 – 13.40 1

Minutes Minutes from last IGG meeting – June 22nd 2006 2

Action Items Actions Addressed in Advance of Meeting Update on Action Items Actions to be covered during remainder of presentation Actions to be carried forward Other Action Items 3

Actions Addressed in Advance of Meeting Action Item 7 – Provide update on date for data provision MCR 83 refers Interim data issued to all Market Participants Data Extract for DUoS Group 3 & Higher issued on CD 30-05-06 Data Extract for Transmission-Connected sites issued on the 7th July DG*A and DG*B Extract issued on the 4th August Propose to close this Action 4

Update on Action Items Action Item 7 – Review requirement for connection agreement on CoS Action Item 9 – Advise IGG on proposals to resolve sites >= 100 kVA with no Connection Agreement CER Decision on Connection Agreements See MO and MRSO Update later in presentation for deemed letter implementation and interim arrangements DR to be raised in the near future 5

Actions to be carried forward 6

Actions to be carried forward Action Item 3 – Review of objections process Initial figures issued to CER 7

Actions to be carried forward Action Item 12 – CER to provide update to IGG from Pre-payment Working Group It has been proposed to provide update to Supplier Forum 8

Actions to be covered during remainder of presentation Action Item 2 – Document Procedures governing the allocation of MPRNs for TSO Connected Sites DR 0112 NEW MPD 37 Market Process for New Transmission Connected site issued See MD Update later in presentation Feedback Required 9

CER Update 10

Gemserv Update 11

Market Operations Update 12

Agenda ESB Networks Update MRSO Update Retail Market Issues Update 13

John Casey ESB Networks AIM Project Manager SEM Update John Casey ESB Networks AIM Project Manager 14

Retail Electricity Market Issues Update Brona McKnight, ESB Networks 15

Retail Electricity Market Issues Log Log continuing to issue on a weekly basis Summary Statistics (as per last release –09-08-06) Total Number of Issues Logged 130 Total ‘Closed’ 118 Total ‘In Progress’ 10 Total ‘Being Monitored’ 1 Total ‘Logged’ 2 Issues Resulting in DRRs 9 Total Raised Since Last Issue 1 Total Closed Since Last Issue 1 16

Retail Market Design Service Update C. Madden, RMDS 17

Retail Market Design Service Update Liaison with NI Design Authority SIG Meeting 01.08.06 SIG Schedule Release dates Release Plan for 2007 Stakeholder Meetings Meeting held with one Market Participant 2007 Budget in preparation 18

RMDS Website Working with Web Development team to create our own RMDS web-site to store V 5.1 Propose to replace RMIG site with new RMDS Website -Target Date is early September 19

Sample of Home page 20

Discussion Requests and Market Change Requests Market Design Update Future Releases July Release Discussion Requests and Market Change Requests 21

Proposed 2007 Release Strategy 22

Existing Two Schema Strategy 23

Single Schema Strategy 24

How? Phase 1 (March ‘07) Phase 2 (November ‘07) Implement vulnerable customer and registered company number on central market system Phase 2 (November ‘07) Retrofit message changes 25

Impact of New Strategy Mobility impaired omitted until schema Multiple non-life support attributes not possible Use old rejection reasons Addition of attributes to 114, 116, 116R delayed Recommended 26

Pros and Cons Pros Simplifies planning Reduces Impact on Market Enables implementation of main elements of market release. Cons Schema freeze for up to 17 months. Delays some aspects of the vulnerable customers functionality 27

Implementation CER agreement in principle Market agreement? Split MCR078 and DR 103 Prepare release plane Secured 28

July Release – MCR 0075 Schedule for the production of Historical Re-Aggregation issued on 11-07-2006 Assurance Questionnaire issued to participants. Implementation of MCR 0075 Amendment to MM 501S completed on 02-08-06. 29

Discussion Requests & Market Change Request Brona McKnight 30

New Discussion Request -DR 0117 Proposal to add Acceptance / Completion / Cancellation messages to Meter Works Design -Raised by: Retail Market Design Service Proposal to add 3 new Market Messages Field Work Request Acceptance 131A Field Work Completed 131C Field Work Request Cancelled 131X 31

Discussion Requests -DR 0114 MM210 Supplier Provided Reading Request that any valid reads submitted on an M210 Supplier Provided Reading (read reason 95 – not for CoS) are accepted by ESB Networks regardless of whether a complete set of readings for every register is provided or not. 32

Reasoning behind present Business Rule Collection of all reads is best practise On any occasion of access to the site or in the event of customer contact all meters are read as this may be the only opportunity for some time to get readings Breaking this rule and allowing "partial" readings (even by customers) could result in the skewing of future estimates – e.g. in the scenario of applying a customer read to a day register while estimating the night register for the same date. The exception allowed for reads by ESB Networks is for extreme cases only e.g. damaged meter. Partial reads are actioned by ESBN for follow-up to resolve the root cause e.g. replace the meter - itself closed off by a complete set of reads. For these reasons, it is not proposed to widen the scope of incomplete reads and all Suppliers are requested and encouraged to collect a read for all meters on the occasion of contact with the customer. 33

Discussion Requests DR 0112 NEW MPD 37 Market Process for New Transmission Connected site Raised by: Retail Market Design Service NEW PROCESS (NEW MPD 37 Market Process for New Transmission Connected site) REQUIRED TO DOCUMENT THE PROCESS FOR THE NEW CONNECTION OF A QH METER POINT TO THE Eirgrid (TRANSMISSION) SYSTEM. Amended DR issued 20-07-06 Incorrect Title notified Next Steps Issue New Version of DR with correct title Investigate whether a new MPD/Amendment is required for Generators 34

New Discussion Requests DR 0113 SUPPLIER OF LAST RESORT (SOLR) Raised by: ESB Customer Supply CER final direction on the Supplier of Last Resort (CER 06/006) Following Feedback, further Clarification Required from CER 35

Change Requests MCR 0087 Exchanged Meter Ref amendment to provide only for like for like exchanges Next Steps? 36

TAG Update B Mc Knight, RMDS 37

MPCC Upgrades Single Installation CD issued to all Market Participants 27-07-2006 New CD contains all releases of MPCC base lining to version 11.0. 38

Planned outages There will be an outage of the Market Gateway ( Hub) from 08:00 on Sat 19th until 22:00 on Sun 20th August. This outage will facilitate a re-org of the Hub's databases. Messages from/to MRSO will be queued until the task is completed There will be a SAP site switch outage on Sunday 13th August from 08.30 – 13.00 approximately. 39

Next Steps Proposed Diary dates for subsequent meetings September 7th (Special IGG meeting for SEM) September 21st November 2nd December 14th 40

Next Steps Propose to continue with conference call every two weeks – proposed dates August 24th September 14th (September 7th clashes with Special IGG. Proposed slot to take questions on SEM changes.) October 5th Call details will remain the same: Number: 01-6647602 PIN : 77640 Contingency number remains: 01-6647777 PIN: 60236 41

Current Market Changes None SoLR DR113 Mar 06 TBC Priority Vul. Customers DR103 Dec 06 CoLE reads MCR079 Mar. 07 Reg. Co. No. MCR078 July 06 501s MCR075 Dec. 06 NQH to QH MCR071 Sep. 06 QH Eligibility MCR070 42