Shrinkage Forum

The Shrinkage Forum provides an opportunity for the Distribution Network Operators to meet interested parties in order to discuss LDZ shrinkage. This includes dealing with issues described in the UNC. The Joint Office provides administrative support for the Forum. Tim Davis chairs the meetings and Lorna Dupont is the Secretary. Suggested agenda items are always welcome and should be sent to enquiries@gasgovernance.co.uk. Details of Forum meetings are provided here, along with related publications.

Publications

2012-13 Final Proposals

Attachment	Size
28 March 2012 National Grid NTS Forecast Shrinkage Factors	328.68 KB
27 March 2012 Scotia Gas Networks	41.8 KB
29 February 2012 Northern Gas Networks	284.44 KB
28 February 2012 Wales & West Utilities	101.2 KB
27 February 2012 National Grid Distribution	82.67 KB

2012-13 Initial Proposals

Attachment	Size
21 February 2012 Response to the Representation from British Gas (provided by National Grid Distribution)	28.96 KB
02 February 2012 Representation - British Gas	121.92 KB
30 December 2011 Scotia Gas Networks	66.25 KB
28 December 2011 Wales & West Utilities	104.33 KB
22 December 2011 National Grid Distribution	132.02 KB
22 December 2011 Northern Gas Networks	283.87 KB

2011-12 Final Proposals

Attachment	Size
28 February 2011 Scotia Gas Networks	41.8 KB
28 February 2011 Wales & West Utilities	95.02 KB
28 February 2011 National Grid Distribution	81.07 KB
28 February 2011 Northern Gas Networks	195.76 KB

2011-12 Initial Proposals

Attachment	Size
18 February 2011 National Grid NTS	107.43 KB
18 February 2011 Wales & West Utilities Response to Representation received from British Gas	333.8 KB
16 February 2011 Scotia Gas Networks Response to Representation received from British Gas	75.61 KB
14 February 2011 Northern Gas Networks Response to Representation received from British Gas	154.46 KB
14 February 2011 National Grid Distribution Response to Representation received from British Gas	30.08 KB
03 February 2011 Scotia Gas Networks (amended)	73.58 KB
02 February 2011 Representation - British Gas	53.91 KB
30 December 2010 Wales & West Utilities	94.12 KB
30 December 2010 National Grid Distribution	133.48 KB
21 December 2010 Northern Gas Networks	197.52 KB

2010-11 Final Proposals

Attachment	Size
05 March 2010 National Grid NTS	163.01 KB
01 March 2010 Wales & West Utilities	92.06 KB
01 March 2010 National Grid Distribution	82.64 KB
26 February 2010 Scotia Gas Networks	41.8 KB
26 February 2010 Northern Gas Networks	152.6 KB

2010-11 Initial Proposals

Attachment	Size
31 December 2009 Wales & West Utilities	111.57 KB
30 December 2009 Scotia Gas Networks	112.86 KB
24 December 2009 Northern Gas Networks	96.73 KB
23 December 2009 National Grid Distribution	132.93 KB

2009-10 Final Proposals

Attachment	Size
27 August 2009 National Grid NTS Proposed factors and covering letter	134.48 KB
03 March 2009 Wales & West Utilities	94.92 KB
02 March 2009 Scotia Gas Networks	193.44 KB
27 February 2009 National Grid Distribution	87.7 KB
27 February 2009 Northern Gas Networks	102.73 KB

2009-10 Initial Proposals

Attachment	Size
05 February 2009 Response to Representations - Wales & West Utilities	320.59 KB
13 January 2009 Representation - EON UK	40.04 KB
02 January 2009 Wales & West Utilities	94.78 KB
31 December 2008 Scotia Gas Networks	247.89 KB
30 December 2008 National Grid Distribution	136.7 KB
29 December 2008 Northern Gas Networks	105.75 KB

2008-09 Final Proposals

Attachment	Size
01 September 2008 Wales & West Utilities	98.15 KB
01 September 2008 Northern Gas Networks	174.21 KB
31 August 2008 Scotia Gas Networks	77.33 KB
29 August 2008 National Grid Distribution	77.77 KB
21 August 2008 National Grid NTS Proposed factors and covering letter.	223.63 KB

2008-09 Initial Proposals

Attachment	Size
01 July 2008 Scotia Gas Networks	161.7 KB
01 July 2008 Wales & West Utilities	98.27 KB
01 July 2008 Northern Gas Networks	109.71 KB
27 June 2008 National Grid Distribution	149.84 KB

2007-08 Final Proposals

Attachment	Size
31 August 2007 Scotia Gas Networks	43.32 KB
31 August 2007 Wales & West Utilities	91.25 KB
31 August 2007 National Grid Distribution	113.88 KB
30 August 2007 Northern Gas Networks	65.07 KB
17 August 2007 National Grid NTS Proposed factors and covering letter (1 of 2)	18.51 KB
17 August 2007 National Grid NTS Proposed factors and covering letter (2 of 2)	35.46 KB

2007-08 Initial Proposals

Attachment	Size
29 June 2007 Scotia Gas Networks	175.18 KB
29 June 2007 Wales & West Utilities	96.81 KB
28 June 2007 Northern Gas Networks	154.11 KB
19 June 2007 National Grid Distribution	116.02 KB

2006-07 Final Proposals

Attachment	Size
31 August 2006 Scotia Gas Networks	189.01 KB
31 August 2006 Wales & West Utilities	90.46 KB

2006-07 Initial Proposals

Attachment	Size
30 June 2006 Wales & West Utilities	89.04 KB
30 June 2006 Scotia Gas Networks	347.74 KB
30 June 2006 Northern Gas Networks	383.57 KB
30 June 2006 National Grid Distribution	184.85 KB

2005-06 Final Proposals

Attachment	Size
26 June 2006 National Grid Distribution	288.33 KB
26 June 2006 Northern Gas Networks	184.83 KB
26 June 2006 Scotia Gas Networks	199.71 KB
26 June 2006 Wales & West Utilities	346.3 KB

Assessment and Adjustment 2010-11

Attachment	Size
11 October 2011 Scotia Gas Networks	66 KB
05 August 2011 Northern Gas Networks	129.35 KB
29 July 2011 National Grid Distribution	83.96 KB
22 July 2011 Wales & West Utilities	56.6 KB
22 July 2011 Wales & West Utilities - Letter	322.25 KB

Assessment and Adjustment 2009-10

Attachment	Size
10 December 2010 Revised Shrinkage Assessment & Covering Letter (provided by Northern Gas Networks)	234.19 KB
13 October 2010 Shrinkage Assessment and Adjustment (provided by Scotia Gas Networks)	65.7 KB
30 July 2010 Shrinkage Assessment and Adjustment (provided by National Grid Distribution)	83.65 KB
30 July 2010 LDZ Shrinkage and Associated Commodity Charge Adjustment (provided by Wales & West Utilities)	55.79 KB
28 July 2010 Shrinkage Assessment and Adjustment Letter (provided by Wales & West Utilities)	322.42 KB

Assessment and Adjustment 2008-09

Attachment	Size
21 January 2010 Wales & West Utilities	59.67 KB
21 January 2010 Wales & West Utilities - Letter	324.47 KB
05 August 2009 Northern Gas Networks	65.24 KB
03 August 2009 Scotia Gas Networks	131.87 KB
31 July 2009 National Grid Distribution	76.33 KB

Assessment and Adjustment 2007-08

29 December 2008

Assessment and Adjustment Details
These documents present an assessment of LDZ Shrinkage for the Gas Year 2007-08, in accordance with Uniform Network Code Section N 3.3.3, together with the consequent adjustments.

National Grid Distribution

Attachment	Size
30 December 2008 LDZ Shrinkage Assessment	49.28 KB
30 December 2008 LDZ Shrinkage Adjustment	41.2 KB
30 December 2008 Associated Commodity Charge for the LDZ Shrinkage Adjustment	48.3 KB

Northern Gas Networks

Attachment	Size
29 December 2008 LDZ Shrinkage Assessment, Adjustment and Associated Commodity Charge Adustment	94.27 KB

Scotia Gas Networks

Attachment	Size
31 December 2008 LDZ Shrinkage Assessment	63.67 KB
31 December 2008 LDZ Shrinkage Adjustment	35.26 KB
31 December 2008 Associated Commodity Charge for the LDZ Shrinkage Adjustment	39.23 KB

Wales and West Utilities

Attachment	Size
02 January 2009 LDZ Shrinkage and Associated Commodity Charge Adjustment	57.76 KB
02 January 2009 LDZ Shrinkage Assessment	65.43 KB

Assessment and Adjustment 2006-07

28 March 2008

Assessment and Adjustment Details
These documents present an assessment of LDZ Shrinkage for the Gas Year 2006-07, in accordance with Uniform Network Code Section N 3.3.3, together with the consequent adjustments.

National Grid Distribution

Attachment	Size
28 March 2008 LDZ Shrinkage Assessment	49.55 KB
28 March 2008 LDZ Shrinkage Adjustment	41.17 KB
28 March 2008 Associated Commodity Charge for the LDZ Shrinkage Adjustment	52.77 KB

Northern Gas Networks

Attachment	Size
03 April 2008 LDZ Shrinkage Assessment	93.97 KB

Scotia Gas Networks

Attachment	Size
15 July 2008 Associated Commodity Charge for the LDZ Shrinkage Adjustment	36.59 KB
31 March 2008 LDZ Shrinkage Adjustment	39.46 KB
31 March 2008 LDZ Shrinkage Assessment	71.93 KB

Wales and West Utilities

Attachment	Size
31 March 2008 LDZ Shrinkage Assessment	58.83 KB
31 March 2008 LDZ Shrinkage and Associated Commodity Charge Adjustment	55.56 KB

Assessment and Adjustment 2005-06

30 March 2007

Assessment and Adjustment Details
These documents present an assessment of LDZ Shrinkage for the Gas Year 2005-06, in accordance with Uniform Network Code Section N 3.3.3, together with the consequent adjustments.

National Grid Distribution

Attachment	Size
29 March 2007 LDZ Shrinkage Assessment	50.87 KB
29 March 2007 LDZ Shrinkage Adjustment	36.77 KB
29 March 2007 Associated Commodity Charge for the LDZ Shrinkage Adjustment	48.34 KB

Northern Gas Networks

Attachment	Size
30 March 2007 LDZ Shrinkage Adjustments	318.86 KB

Scotia Gas Networks

Attachment	Size
30 March 2007 LDZ Shrinkage Assessment	223.07 KB
30 March 2007 LDZ Shrinkage Adjustment	146.92 KB
30 March 2007 Associated Commodity Charge for the LDZ Shrinkage Adjustment	158.18 KB

Wales and West Utilities

Attachment	Size
29 March 2007 LDZ Shrinkage and Associated Commodity Charge Adjustment	56.29 KB
29 March 2007 LDZ Shrinkage Assessment	59.11 KB
29 March 2007 LDZ Shrinkage Adjustment	50.62 KB
29 March 2007 Associated Commodity Charge for the LDZ Shrinkage Adjustment	40.96 KB

Leakage Model Modification Consultations

On 23/11/09, Ofgem published Leakage Model Approval letters covering each of the Distribution Networks. These can be found at:

www.ofgem.gov.uk/Networks/GasDistr/GDPCR7-13/Pages/GDPCR7-13.aspx

Attachment	Size
27 April 2012 Leakage Model Modification Consultation No. 3 Representation - British Gas	123.47 KB
26 April 2012 Leakage Model Modification Consultation No. 3 Representation - National Grid Distribution	19.81 KB
23 April 2012 Review of Leakage Model Consultation No 2. Final Version (provided by National Grid Distribution)	541 KB
23 April 2012 Leakage Model Modification Consultation No 2. Report (provided by National Grid Distribution)	124.82 KB
28 March 2012 Leakage Model Modification Consultation No. 3 (Scotia Gas Networks)	196.65 KB
27 March 2012 Leakage Model Modification Consultation No. 2 Representation - Scotia Gas Networks	99.34 KB
23 March 2012 Leakage Model Modification Consultation No. 2 Representation - British Gas	161.24 KB
23 February 2012 Leakage Model Modification Consultation No. 2 (National Grid Distribution)	104.62 KB
03 July 2009 Independent Expert report on the DN Leakage Model consultation	204.44 KB
31 March 2009 Consultation Paper No. 1	75.97 KB

2012 Meetings

06 January 2012

Notified Attendees

Bob Fletcher (Chair)
Lorna Dupont (Secretary)
Brian Durber (E.ON)
David Simpson (Scotia Gas Networks)*
John Morrison (Northern Gas Networks)
Rawinder Basra (Scotia Gas Networks)
Rochelle Hudson (British Gas)
Roddy Moody (Scotia Gas Networks)*
Roy Malin (National Grid Distribution)
Steve Armstrong (National Grid Distribution)
Steven Edwards (Wales & West Utilities)

*via teleconference

Attachment	Size
13 January 2012 Minutes	108.96 KB
05 January 2012 NGGD Initial Shrinkage Proposal Proposals presentation (provided by National Grid)	50.24 KB
28 December 2011 Leakage Model Modification Draft Consultation	274.3 KB
12 December 2011 Agenda	45.96 KB
06 December 2011 Leakage Model Development Proposals (provided by National Grid Distribution)	914 KB

2011 Meetings

14 December 2011 - CANCELLED

Please note this meeting has been cancelled. The next meeting is scheduled for 06 January 2012.

Notified Attendees:

Bob Fletcher - Chair
Helen Cuin - Secretary
John Morrison - Northern Gas Networks
Rochelle Hudson - British Gas
Roy Malin - National Grid Distribution

Attachment	Size
06 December 2011 Leakage Model Development Proposals (provided by National Grid Distribution)	914 KB
30 November 2011 Agenda	45.95 KB

28 September 2011

Notified Attendees:
Brian Durber (EON UK)
Derek Wilkinson (WWU)
Haren Thillainathan (NGN)
Helen Cuin (Secretary)
John Morrison (NGN)
Rawinder Basra (Scotia Ga Networks)
Robert Cameron-Higgs (WWU)
Rochelle Hudson (British Gas)
Roy Malin (National Grid Distribution)
Stuart Forrest (Scotia Gas Networks) - via teleconference
Tim Davis (Chair)

Attachment	Size
29 September 2011 Minutes	76.64 KB
26 September 2011 Action Updates (provided by Northern Gas Networks)	90.71 KB
16 September 2011 LDZ Leakage Model - with dummy data (provided by National Grid)	3.29 MB
13 September 2011 Action SF0601 update (provided by Scotia Gas Networks)	175.03 KB
24 August 2011 Agenda	47.7 KB

10 August 2011

Notified attendees:

Alec Breen - Northern Gas Networks
Bob Fletcher - Chair
Brian Durber - E.ON UK
Jonathan Wisdom - RWE npower
Haren Thillainathan - Northern Gas Networks
Helen Cuin - Secretary
Rawinder Basra - Scotia Gas Networks
Rochelle Hudson - British Gas
Roy Malin - National Grid Distribution
Stefan Leedham - EDF Energy
Stuart Forrest - Scotia Gas Networks

Attachment	Size
16 August 2011 Minutes	84.44 KB
16 August 2011 NLRMM Uncertainty (provided by National Grid Distribution)	176 KB
05 August 2011 Action SF0601 Response (provided by Northern Gas Networks)	67.25 KB
27 July 2011 Action SF0601 update (provided by National Grid Distribution)	59.92 KB
26 July 2011 Agenda	46.07 KB

27 June 2011

Notified Attendees:

Alec Breen - Northern Gas Networks
Bob Fletcher - Chair
Brian Durber - E.ON UK
David Watson - Centrica
Haren Thillainathan - Northern Gas Networks
Helen Cuin - Secretary
Jonathan Wisdom - RWE npower
Rawinder Basra - Scotia Gas Networks
Rochelle Hudson - British Gas
Roy Malin - National Grid Distribution
Stefan Leedham - EDF Energy
Stuart Forrest - Scotia Gas Networks

and
Derek Wilkinson - Wales & West Utilities

Attachment	Size
29 June 2011 Minutes	77.17 KB
17 June 2011 Leakage Model (provided by National Grid)	204.15 KB
26 May 2011 Agenda	45.82 KB

03 May 2011

Notified Attendees:

Bob Fletcher (Chair)
David Watson (British Gas)
Helen Cuin (Secretary)
Rawinder Basra (Scotia Gas Networks)
Rob Cameron-Higgs (Wales & West Utilities)
Rochelle Hudson (British Gas)
Rocio Vaya Duarte (Iberdrola)
Roy Malin (National Grid Distribution)
Stefan Leedham (EDF Energy)

Jonathan Wisdom (RWE npower)
Alex Ross (Northern Gas Networks)
Stuart Forrest (Scotia Gas Networks)

Attachment	Size
05 May 2011 Minutes	86.2 KB
28 April 2011 NGN Outstanding Actions Update	90.98 KB
09 March 2011 Agenda	38.2 KB

08 March 2011

Attachment	Size
10 March 2011 Minutes	117.68 KB
07 March 2011 Presentation (provided by National Grid Distribution)	916.5 KB
14 February 2011 Agenda	48.27 KB

2008 Meetings

11 July 2008

07 July 2008

Cancellation Notice
This meeting has been cancelled.

Attachment	Size
21 July 2008 Scotia Gas Networks LDZ Shrinkage Initial Proposals Presentation	71.6 KB
14 July 2008 National Grid LDZ Shrinkage Initial Proposals Presentation	635.84 KB
30 June 2008 Agenda	11.26 KB

2007 Meetings

09 August 2007

31 July 2007

Notice of cancellation
Please note that the meeting planned for 9 August 2007 has been cancelled.

14 June 2007

11 June 2007

Notice of cancellation
Please note that the meeting planned for 14 June 2007 has been cancelled.

Attachment	Size
23 May 2007 Agenda	79.6 KB

08 March 2007

Attachment	Size
28 March 2007 Action SF013 Ofgem response	75.59 KB
12 March 2007 Minutes	160.17 KB
08 March 2007 Assessment and Adjustment 2005/06 - Northern Gas Networks	307.5 KB
08 March 2007 Assessment and Adjustment 2005/06 - Scotia Gas Networks	103.5 KB
08 March 2007 Assessment and Adjustment 2005/06 - National Grid Distribution	57.5 KB
08 March 2007 Assessment and Adjustment 2005/06 - Wales & West Utilities	475 KB
26 February 2007 Agenda	81.87 KB

2006 Meetings

14 December 2006

22 November 2006

Notice of cancellation
Please note that the meeting planned for 14 December 2006 has been cancelled.

10 August 2006

30 June 2006

Notice of cancellation
Please note that the meeting planned for 10 August 2006 has been cancelled.

22 June 2006

Attachment	Size
11 July 2006 Action SF013 Ofgem response	75.59 KB
29 June 2006 Minutes	200.63 KB
22 June 2006 Own Use Gas Advantica presentation - Review of Pre-heater Reports & Sensitivity Analysis	130.5 KB
22 June 2006 Wales & West Utilities Shrinkage Factors, Initial Proposals for 2006/07	273.21 KB
22 June 2006 Northern Gas Networks Shrinkage Factors, Initial Proposals for 2006/07	144.84 KB
22 June 2006 Actions from Previous Meeting	93.94 KB
22 June 2006 National Grid Shrinkage Factors, Initial Proposals for 2006/07	425.5 KB
22 June 2006 National Grid Gas Heating Systems	777.79 KB
ShrinkageForumAgenda22June06.pdf	85.68 KB

23 March 2006

Attachment	Size
29 March 2006 Minutes	178.25 KB
23 March 2006 Own Use Gas - Review of 2000 Model	260 KB
23 March 2006 Assessment and Adjustment	749.74 KB
23 March 2006 Gas Safety Regulations	539.28 KB
15 March 2006 Agenda	73.12 KB

2005 Meetings

14 December 2005

Attachment	Size
20 December 2005 Minutes	167.81 KB
20 December 2005 Action Log	81.71 KB
15 December 2005 Own Use Gas	1.18 MB
02 December 2005 Agenda	107.44 KB