dn interruption reform gas customer forum

DN Interruption Reform

Gas Customer Forum

Mark Freeman

10 March 2008

DN Interruption ReformNational Grid Shipper/Consumer Seminars

December 2007 RoadshowsLancaster Dec 4th

Doncaster Dec 5th

Leicester Dec 7th

Liverpool Dec 10th

Manchester Dec 11th

February 2008 seminarsNottingham Feb 19th

Manchester Feb 21st

Interruption Requirements LocationalEast Anglia

LDZ Interruption Zone

Postcodes Interruptible Allowance

(days)

Interruptible Capacity Estimate

(GWh)Min Max

EA Stowmarket IP6, IP8, IP14, IP30 5 45 0.69

NG Interruption Zones &Interruption Requirements 2011/12 - East Anglia (indicative)

Interruption Requirements

Interruption Zone

No. of Days

Peak Day GWh/Day

EA A 45 0.69

Total 0.69GWh/Day

Present interruption 24 GWh/day

Peak Day Total Network Demand 412GWh/Day

Peterborough

Norwich

Chelmsford

Ipswich

Cambridge

Luton

A

Interruption Requirements LocationalEast Midlands

LDZ Interruption Zone

Postcodes Interruptible Allowance

(days)

Interruptible Capacity Estimate

(GWh)Min Max

EM Digby LN4 5 20 0.11EM Burton DE12, DE13, DE14, DE65 5 40 0.33EM Coalville LE67 5 20 0.18EM Clay Cross S45, DE55 5 20 0.20EM Worksop S80, S81 5 20 0.53EM Doncaster DN4, DN5 5 45 0.28EM Barnby Dunn DN1-3, DN7, DN8 5 45 1.13EM Barnsley S70-S75 5 45 1.84EM Scunthorpe DN15-19 5 45 1.51

NG Interruption Zones &Interruption Requirements 2011/12 - East Midlands (indicative)

Northampton

Leicester

Nottingham

Rotherham

Lincoln

Boston

Skegness

A

B

C

D

E

F

G

H

I

Interruption Requirements

Interruption Zone

No. of Days

Peak Day GWh/Day

EM A 20 0.11

EM B 40 0.33

EM C 20 0.18

EM D 20 0.2

EM E 20 0.53

EM F 45 0.28

EM G 45 1.13

EM H 45 1.84

EM I 45 1.51

Total 6.11GWh/Day

Present interruption 48 GWh/day

Peak Day Total Network Demand 543 GWh/Day

Interruption Requirements LocationalNorth West

LDZ Interruption Zone

Postcodes Interruptible Allowance

(days)

Interruptible Capacity Est.

(GWh)

Min Max

NW Earby BB18, BB9, BB8, BD23 5 25 0.14

NW Accrington BB5 5 45 0.17NW North lakes LA8-9, LA21-23 5 45 0.83NW Stalybridge OL6 5 20 0.13NW Appleby Bridge WN6 5 45 0.12NW Knutsford WA16 5 45 0.24NW Hall Green SK9, SK10 5 45 1.25NW Ramsbottom BL0, BL8, BL9 5 45 0.65NW Winsford CW7, CW9, CW10 5 20 0.45NW Bramhall SK7 5 45 0.14

NG Interruption Zones &Interruption Requirements 2011/12 - North West (indicative)

Barrow in Furness

Blackpool

LiverpoolManchester

Crewe

Bolton

Lancaster

A

B

C

DE

F

G

H

I

J

Max. Interruption Requirements

Interruption Zone

No. of Days

Peak Day GWh/Day

NW A 25 0.14

NW B 45 0.17

NW C 45 0.83

NW D 20 0.13

NW E 45 0.12

NW F 45 0.24

NW G 45 1.25

NW H 45 0.65

NW I 20 0.45

NW J 45 0.14

Total 4.12 GWh/Day

Present interruption 44 GWh/day

Peak Day Total Network Demand 597 GWh/Day

Interruption Requirements (LTS) - Indicative

LDZ Interruption Zone

Postcodes Interruptible Allowance

(days)

Interruptible Capacity

Est. (GWh/d)Min Max

EA Fakenham NR21, NR22 5 20 0.4EM Hooton Roberts DN4, DN12, S63, S64 5 10 0.14EM Grantham NG31 5 10 0.75EM Sherington MK16, NN1, NN4, NN5, NN6,

NN7, LE175 10 1.7

EM Thrapston NN3, NN5, NN6, NN8, NN9, NN14, NN29

5 10 1.0

NW Barrow LA12, LA14, LA18 5 10 4.0NW Barrowford BB1-3, BB5-12, BB18 5 10 0.47NW Winsford CW7-10, M5, M14, M19, M22-

24, M31, M34, M41, M905 20 2.5

NW New Mills SK1, SK4-8, SK12-14, SK16, SK22

5 10 0.3

EANG LTS Interruption Zones &Interruption Requirements 2011/12 – East Anglia (indicative)

Interruption Requirements

Interruption Zone

No. of Days

Peak Day GWh/Day

EA 20 0.4

Total 0.4 GWh/Day

Chelmsford

Luton

Cambridge

Peterborough

Ipswich

Norwich

EM

A

B

C

Interruption Requirements

Interruption Zone

No. of Days

Peak Day GWh/Day

EM A 10 0.14

EM B 10 0.75

EM C 10 1.0

EM D 10 1.7

Total 3.59 GWh/Day D

NG LTS Interruption Zones &Interruption Requirements 2011/12 – East Midlands (indicative)

Northampton

Leicester

Nottingham

Boston

Lincoln

SkegnessRotherham

A

B

C D

Barrow in Furness

Blackpool

Liverpool

Manchester

Crewe

Lancaster

BoltonInterruption Requirements

Interruption Zone

No. of Days

Peak Day GWh/Day

NW A 10 4.0

NW B 10 0.47

NW C 10 0.3

NW D 20 2.5

Total 7.27 GWh/Day

NG LTS Interruption Zones &Interruption Requirements 2011/12 - North West (indicative)

East Anglia Actual Interruption - Dayslocational by postcode

InterruptionLDZ Zone Postcodes 2001/02 2002/03 2003/04 2004/05 2005/06 2006/07 2007/08

EA Stowmarket IP6, IP8, IP14, IP30 2 10 0 0 0 0 0

East Midlands Actual Interruption - Dayslocational by postcode

InterruptionLDZ Zone Postcodes 2001/02 2002/03 2003/04 2004/05 2005/06 2006/07 2007/08

EM Digby LN4 0 4 2 0 0 0 0EM Burton DE12, DE13, DE14, DE65 1 4 0 0 0 0 0EM Coalville LE67 3 4 2 0 0 0 0EM Clay Cross S45, DE55 0 0 0 0 0 0 0EM Worksop S80, S81 0 4 2 0 0 0 0EM Doncaster DN4, DN5 0 0 0 0 0 0 0EM Barnby Dunn DN1-3 DN7, DN8 0 0 2 0 0 0 0EM Barnsley S70-S75 2 0 1 0 0 0 0EM Scunthorpe DN15-19 2 4 2 0 0 0 0

North West Actual Interruption - Days locational by postcode

InterruptionLDZ Zone Postcodes 2001/02 2002/03 2003/04 2004/05 2005/06 2006/07 2007/08

NW Earby BB18, BB9, BB8, BD23 4 13 3 2 0 0 0NW Accrington BB5 2 0 0 0 0 0 0NW North Lakes LA8-9, LA21-23 4 15 5 0 5 3 0NW Stalybridge OL6 2 4 2 0 0 0 0NW Appleby Bridge WN6 0 0 0 0 0 0 0NW Knutsford WA16 0 0 0 0 0 0 0NW Hall Green SK9, SK10 0 0 0 0 0 0 0NW Ramsbottom BL0, BL8, BL9 0 0 0 0 0 0 0NW Winsford CW7, CW9, CW10 0 0 0 0 0 0 0NW Bramhall SK7 0 0 0 0 0 0 0

Actual Interruption days by LDZVolume by postcode

InterruptionLDZ Zone Postcodes 2001/02 2002/03 2003/04 2004/05 2005/06 2006/07 2007/08

EA Fakenham NR21, NR22 0 0 0 0 0 0 0EM Hooton Roberts DN4, DN12, S63, S64 0 0 0 0 0 0 0EM Grantham NG31 0 0 0 0 0 0 0EM Sherington MK16, NN1, NN4, NN5 0 0 0 0

NN7EM Thrapston NN3, NN5, NN6, NN8, NN9, 0 0 2 0 0 0 0

NN1, NN14, NN29NW Barrow LA12, LA14, LA18, 0 0 0 0 0 0 0NW Barrowford BB1-3, BB5-12, BB18 2 13 3 2 0 0 0NW Winsford CW7-10, M5, M14, M19, M22-24 0 0 0 0 0 0 0

M31, M34, M41, M90NW New Mills SK1, SK4-8, SK12-14 4 15 3 2 5 3 0

SK16, SK22

Actual Interruption days by LDZ

LDZ 2001/02 2002/03 2003/04 2004/5 2005/06 2006/07 2007/08

EA 2 10 0 0 0 0 0EM 9 4 2 0 0 0 0NW 7 17 5 3 5 3 0NT 0 8 1 0 0 0 0WM 0 0 0 0 0 0 0