1

DN Interruption Phase IIDN Interruption Phase II

27 January 201127 January 2011

2

Supply Type InitialisationProposed Solution

Shippers to re-confirm all on demand LDZ interruptible supply points using current processes with an effective date of 01 October 2011 to:

Change the supply type status to firm Set the NDM SOQ or DMSOQ & DMSHQ parameters Correct transportation invoicing Ensure compliance with UNC MOD090

For any sites remaining unconfirmed by a back-stop date, it is proposed that

they will be reconfirmed by the Transporter on the current Registered User’s behalf

3

Benefits

Shippers will nominate the correct Supply Type and receive an appropriate Supply Point Offer for the nominated values.

Shippers will be able to confirm supply points with GNT permitted by code NDM or DM (DMM, DMV or DME)

Updates both Transporter and Shipper systems.

Provides an opportunity to review and set the DM SOQ & DM SHQ: DMSOQ for Interruptible Supply Point will not have increased in line with daily consumption (although BSSOQ will have been reset once per year). Supply Points confirmed as Firm DM will be subject to the LDZ capacity ratchet regime.

4

Supply Type Initialisation Shipper / xoserve indicative milestones

April - xoserve will issue to Shippers interruptible portfolios to current Registered System Users together with Appeals to change the supply type through the usual process

April – May – Shippers to review portfolio and SOQ/SHQ

April ’11 July ‘11

The above dates will be subject to change and are dependent on the commencement of technical evaluation.

May onwards – xoserve issue revised appeals as required

Shippers nominate using appropriate appeal reference

Networks process appeals in the normal way – allow time for referrals

May – Shippers advise of any amendments to Registered System User,

DMSOQ, DMSHQ, GNT Change

5

Restricted transfer dates

Re-confirmation of LDZ Interruptible supply points with requested effective dates between 08/09/11 - 19/10/11 will be rejected

These confirmations would prevent a correct transfer for 1st October

Where a Shipper has a supply contract (incoming Shipper) due to commence between these dates where effective date is other than 01/10/11, incoming Shipper will need to notify xoserve.

Transportation adjustments can be processed for the period where the RSU doesn’t align with the customer contract.

6

Supply Type Initialisation Proposed Solution - Timeline

The above dates will be subject to change and are dependent on the commencement of technical evaluation.

1-Oct-11MOD 90

fully effective

No interruptible sites can transfer

in this period except on Oct 1st 2011

11-Nov-11 All transfers from this date

will be unaffected by constraints

in any way

Any transfer dates in this period can be obtained via confirmation

submitted after Sept 30th 2011

Confirmations for interruptible sites

can be submitted so long as the transfer date

Is before Sept 8th 2011 or on Oct 1st 2011

No restrictions on submission of

confirmations apply

No restrictions on submission of confirmations from Oct 1st 2011 onwards

Transfer dates in this period can only be obtained via

reconfirmation

submitted after

Sept 30th 2011

1-Oct-11Earliest date that a

confirmation can be submittedif site has transferred on 1st Oct

xoserve will submit back-stop

confirmations for any interruptible site where there is no confirmation

for Oct 1st 2011

Shipper can obtain firm offer for interruptible site via appeal

from March 2011From Oct 1st 2011 all offers provided will be firm

18-Aug-11Earliest date (D-30)

a competitive confirmation can be submitted

for transfer on 1st Oct

7-Sep-11Last day (D-17) that a

competitive confirmation can be submitted

for transfer on 1st Oct

16-Sep-11Last day (D-10) a confirmation

for 1st Octcan be objected to

12-Oct-11Earliest

Transfer Date for re-confirmation

if site has transferred on 1st Oct

21-Oct-11Earliest Transfer Date

for competitive confirmation if site

transferred on 1st Oct

20-Sep-11Last day (D-8) a confirmation

for 1st Octcan be submitted

Confirmations submitted by shippers or xoserve at interruptible sites will block last

minute confirmation by other shippers

21-Sep-11D-7 Transfer notifications will include new gas year

firm charges rates

7

Backstop process

Any sites remaining unconfirmed by the ‘back-stop date’ would be re-confirmed by the Transporter on the current Registered System User’s behalf

xoserve will advise the Registered System User of any sites that remain unconfirmed to ‘firm’ by the ‘back-stop date’

xoserve will create .NOM and .CNF files for each Shipper If required, copies of files can be issued to Shippers

File names will be previously unused references SOQ/SHQ values used in that confirmation will be exactly as held in Sites and

Meters at that time, regardless of any appeal raised by Shippers earlier in the year Current Shipper and Supplier and current emergency contacts will also be utilised Files would be processed through UK Link and normal response files generated

Files may be issued to Shippers

TRF files would be issued to Shippers at D-7 Same process would be operated for Unique Sites but carried out off-line