COR3187 JO July v 1.0 A 7 July 2014

Changes to Gemini in 2015 In January Xoserve initiated a major project, EU Code Change, in conjunction with the EU implementation programme to deliver the necessary changes to the Gemini and Gemini Exit systems. The design stage has now commenced, system build will begin in August and there will be an extensive testing programme, including more than three months of UAT, next year.

The external facing changes that Users will see have been identified from the detailed analysis and are listed in the following tables.

Gemini

Name Number Impact

Changed Screens 6

Nominations 1 Updating Nominations for Interconnection Points not allowed in these screens

Update Nominations 1

Renominations 1

Update Renominations 1

Bulk Upload Nominations 1

Verify Nominations Upload 1

New Screens 8

Interruptible Capacity Release 1 New screen for displaying Interruptible Capacity to be released

IP Trade Details 1 New screens for EU processes at Interconnection Points

LTUIOLI Offer Details 1

Surrender Request Details 1

EU Nominations 1

EU Nominations Update 1

EU Nominations Bulk Upload 1

Verify EU Nomination Upload 1

Changed File Formats 1

NTS Entry Capacity Invoice (NTE) 1 New charges for EU Entry Capacity processes

COR3187 JO July v 1.0 A 7 July 2014

New File Formats 2

IP Nomination Bulk Upload CSV File 1 New files for EU processes at Interconnection Points

IP Nomination Bulk Upload XML File 1

Changed APIs 0 New APIs 3

IP Entry Entitlements 1 New API for EU processes at Interconnection Points

IP Update Nominations 1

IP Query Nominations 1

Changed Reports 13

Bid Information Report 1 Reports updated for EU Entry Capacity processes

Bids/Shippers Report 1

Capacity and Price Information Report 1

Capacity and Revenue by Quantity Holder Report 1

Entitlements - Net Report 1

Max / Min Price Info Report 1

Sold/Unsold Report 1

System Balance 1 Reports updated for Gas Day Change

Business Associate Balance 1

Business Associate Balance (By Hour) 1

Renominations By Meter 1

BA Total Energy Forecast 1 Additional demand run at D-1 11:00

WCF / SF 1

New Reports 4

CMP Reallocation Report 1 New reports for EU processes at Interconnection Points

EU Nominations Vs Capacity Report 1

Clearing Price Vs Reserve Price Report 1

EU Nomination Vs Capacity Breakdown Report 1

COR3187 JO July v 1.0 A 7 July 2014

Gemini Exit

Name Number Impact

Changed Screens 4

View Location 1 Location EIC info added

Off-peak Capacity Release 1 Firm Sold out flag added

Assignment Registration 2 Updated for post CAM capacity assignments

New Screens 3

IP Transfer Details 1 New screens for EU processes at Interconnection Points

Surrender Request Details 1

LTUIOLI Offer Details 1

Changed File Formats 1

NTS Exit Capacity Invoice (NXC) 1 New charges for EU Exit Capacity processes

New File Formats 0 Changed APIs 0 New APIs 1

IP Exit Entitlements 1 New API for EU processes at Interconnection Points

Changed Reports 8

Capacity by Quantity Holder Report 1 Reports updated for EU Exit Capacity processes

Request Information Report 1

Requests/Users Report 1

Max / Min Price Info Report 1

Capacity and Price Information Report 1

Entitlement - Net Report 2

Sold / Unsold Report 1

New Reports 3

CMP Reallocation Report 1 New reports for EU processes at Interconnection Points

LTUIOLI Reallocation Report 1

Clearing Price Vs Reserve Price Report 1

COR3187 JO July v 1.0 A 7 July 2014

Xoserve will keep the industry up to date on progress throughout the project but if you have any questions, please e-mail the project team at Box.Xoserve.GeminiChange@xoserve.com or contact Jessica Harris, the Project Manager, on 0121 623 2632.