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System Management Principles Statement
� Compliance report
� Summary of balancing actions and breaches
� Performance compared to last year
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2
Summary Report
00Number of Non-Material Breaches
00Number of Material Breaches
Nov-13Oct-13
3637Total
1423Total Number of Sell Actions
2214Total Number of Buy Actions
Nov-13Oct-13
0
0
360
Nov-12
0Number of Non-Material Breaches
(Calendar year to date)
0Number of Material Breaches
(Calendar year to date)
366Number of Balancing Actions
(Calendar year to date)
Nov-13
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Transporter Actions and Neutrality
� Energy Balancing
� Capacity
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4
Transporter Energy Traded on the OCMNovember 2012 to November 2013
-362434052012
-315026672013 [YTD]
Sell [GWh]Buy [GWh]Year
National Grid Monthly Buys and Sells
Nov 2012 to Nov 2013 vs 2011/12
-1,400
-1,200
-1,000
-800
-600
-400
-200
0
200
400
600
Nov-12 Dec-12 Jan-13 Feb-13 Mar-13 Apr-13 May-13 Jun-13 Jul-13 Aug-13 Sep-13 Oct-13 Nov-13
Month
GW
h
-1,400
-1,200
-1,000
-800
-600
-400
-200
0
200
400
600
Buy 2012/13 Buy 2011/12 Sell 2012/13 Sell 2011/12
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5
Days of Default SMP PricesFrom December 2012 to November 2013
63%67%70%Nov 13
BothSMPSSMPBMonth
SMPB Calculation Summary
Dec 2012 to Nov 2013
0
10
20
30
40
50
60
70
80
90
100D
ec-1
2
Jan-1
3
Feb-1
3
Mar-
13
Apr-
13
May-1
3
Jun-1
3
Jul-13
Aug-1
3
Sep-1
3
Oct-
13
Nov-1
3
%ag
e
SMPB [NG Set Price] SMPB [Default Marginal]
SMPS Calculation Summary
Dec 2012 to Nov 2013
0102030405060708090
100
Dec-1
2
Jan-1
3
Feb-1
3
Mar-
13
Apr-
13
May-1
3
Jun-1
3
Jul-13
Aug-1
3
Sep-1
3
Oct-
13
Nov-1
3
%ag
e
SMPS [NG Set Price] SMPS [Default Marginal]
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6
Energy Balancing – Balancing Costs Sept - Oct 2013
£542,789
Payments / Charges / Net Credit / Debit [Imbalance /
Scheduling / OCM] - 1st Sept to 31st Oct 2013
28,415,853
683,325
34,402,119
9,653,051
11,171,107
0
5,000,000
10,000,000
15,000,000
20,000,000
25,000,000
30,000,000
35,000,000
40,000,000
45,000,000
50,000,000
Credits Debits
Imbalance Scheduling OCM
Net Debit £3,784,885
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7
Energy Balancing – Balancing CostsSep - Oct 2013
OCM Payments / Charges Graph
1st Sept 2013 to 31st Oct 2013
-2,000,000
-1,500,000
-1,000,000
-500,000
0
500,000
1,000,000
1,500,000
01/0
9/2
01
3
08/0
9/2
01
3
15/0
9/2
01
3
22/0
9/2
01
3
29/0
9/2
01
3
06/1
0/2
01
3
13/1
0/2
01
3
20/1
0/2
01
3
27/1
0/2
01
3
Day
£
Payment [TTB]
Charge £ [TTS]Imbalance Payments / Charges Graph
1st Sept 2013 to 31st Oct 2013
-2,500,000
-2,000,000
-1,500,000
-1,000,000
-500,000
0
500,000
1,000,000
1,500,000
2,000,000
2,500,000
3,000,000
01
/09/2
013
08
/09/2
013
15
/09/2
013
22
/09/2
013
29
/09/2
013
06
/10/2
013
13
/10/2
013
20
/10/2
013
27
/10/2
013
Day
£
Payment £ [DCS]
Charge £ [DCT]
Scheduling Charges Graph
1st Sept 2013 to 31st Oct 2013
0
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
01/0
9/2
013
08/0
9/2
013
15/0
9/2
013
22/0
9/2
013
29/0
9/2
013
06/1
0/2
013
13/1
0/2
013
20/1
0/2
013
27/1
0/2
013
Day
£
Exit Charge £ [EXS]Entry Charge £ [ESC]Exit Charge £ [DXS]
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8
Capacity NeutralityNet Cost / Revenue From 1st April 2013 to 31st October 2013
-£510,402Net Revenue
£0Revenue from Locational Sells and PRI Charges
-£28,930Non-Obligated Sales Revenue (Entry only)
-£80,220Entry Capacity Overrun Revenue (As at September 13)
£0Total Entry Constraint Management Operational Costs
-£401,252WDDSEC/DAI Entry Capacity Revenue
Revenue/Costs
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9
Capacity NeutralityRevenues from WDDSEC and DAIFrom 1st April 2013 to 31st October 2013
ST FERGUS -£157,052
TEESSIDE -£10,755
BARROW £0
THEDDLETHORPE -£8,599
EASINGTON -£180,096
BACTON -£44,745
OTHER -£5
Net Revenue -£401,252
Capacity Neutrality
Revenues from WDDSEC and DAI
April 2013 to October 2013
£5,000
£25,000
£45,000
£65,000
£85,000
£105,000
£125,000
£145,000
£165,000
£185,000
St Ferg
usTees
side
Bar
row
Theddleth
orpe
Easin
gton
Bac
ton
Oth
er
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10
Capacity NeutralityRevenues from Entry Cap Overruns and Non-Obligated Sales,and Locational Sells and PRI Charges. Totals From 1st April 2013 to 31st October 2013
£0 (FY13/14)Total
-Mar-14
-Feb-14
-Jan-14
-Dec-13
-Nov-13
£0Oct-13
£0Sep-13
£0Aug-13
£0Jul-13
£0Jun-13
£0May-13
£0Apr-13
Locational Sells and PRI charges revenue
Month
Total
Mar-14
Feb-14
Jan-14
Dec-13
Nov-13
Oct-13
Sep-13
Aug-13
Jul-13
Jun-13
May-13
Apr-13
Month
-£28,930 (FY13-14)-£80,220 (FY13-14)
--
--
--
--
--
-£28,755NOT YET AVAILABLE
--£11,538
--£6,080
--£16,257
--£33,996
--£7,376
-£175-£4,972
Non-obligated sales revenue
(entry)
Entry Cap Overrun Revenue
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Operational Overview
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12
National Composite Weather October to Dec 2013 vs. Historical Range
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13
Mean Composite Weather Variables October & November 2013 vs. Previous Yrs
Mean National Composite Weather for October
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Demands
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15
Gas Demand Breakdown1st June 2013 to 1st Dec 2013 vs. 2012
Gas Demand Breakdown
1st June 2013 to 1st December 2013 vs 2012
0
50
100
150
200
250
300
350
400
01-J
un
-13
08-J
un
-13
15-J
un
-13
22-J
un
-13
29-J
un
-13
06-J
ul-
13
13-J
ul-
13
20-J
ul-
13
27-J
ul-
13
03-A
ug
-13
10-A
ug
-13
17-A
ug
-13
24-A
ug
-13
31-A
ug
-13
07-S
ep
-13
14-S
ep
-13
21-S
ep
-13
28-S
ep
-13
05-O
ct-
13
12-O
ct-
13
19-O
ct-
13
26-O
ct-
13
02-N
ov-1
3
09-N
ov-1
3
16-N
ov-1
3
23-N
ov-1
3
30-N
ov-1
3
mcm
NDM DM (Excl Interconnectors) Total Interconnector Export Storage Injection
SND Cold Demand Warm Demand Previous Years Demand
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16
LD
Z D
em
an
d1st O
ct 2
013 to
3rd
Decem
ber 2
013
Ga
s D
em
an
d B
rea
kd
ow
n [L
DZ
20
13
vs
20
12
] vs
NT
S D
em
an
d / C
WV
's
1s
t Ju
ne
20
13
to 3
rd D
ec
em
be
r 20
13
0
50
100
150
20
0
25
0
30
0
35
0
01-Jun-13
08-Jun-13
15-Jun-13
22-Jun-13
29-Jun-13
06-Jul-13
13-Jul-13
20-Jul-13
27-Jul-13
03-Aug-13
10-Aug-13
17-Aug-13
24-Aug-13
31-Aug-13
07-Sep-13
14-Sep-13
21-Sep-13
28-Sep-13
05-Oct-13
12-Oct-13
19-Oct-13
26-Oct-13
02-Nov-13
09-Nov-13
16-Nov-13
23-Nov-13
30-Nov-13
Ga
s D
ay
mcm
0 2 4 6 8 10
12
14
16
18
LD
Z D
em
and 2
013
LD
Z D
em
and 2
012
NT
S D
em
and 2
013
CW
V 2
013
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17
NDM Historic Demand and 2013/14 Forecast
0
50
100
150
200
250
300
350
10/11 11/12 12/13 13/14 Forecast
mc
m/d
Upper/Lower Percentile Range Average
217mcm
61mcm
135mcm
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18
Power GenerationOctober 2013 to November 2013
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19
Historic Power Gen Demand & 2013/14 Forecast
0
10
20
30
40
50
60
70
80
90
100
10/11 11/12 12/13 13/14 Forecast
mc
m/d
Upper/Lower Percentile Range Average
60mcm
18mcm
38mcm
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20
LDZ Power
Station IUK Moffat Storage Industrial
2012/2013 163.5 38.9 0.8 16.5 9.4 11.7
2013/2014 140.3 36.2 4.1 15.8 14.0 8.6
0.0
20.0
40.0
60.0
80.0
100.0
120.0
140.0
160.0
180.0
mcm
/d
13/14
Average Daily Demand by TypeOctober/November – 2012/13 vs. 2013/14
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Supplies
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22
Gas Supply Breakdown 1st Oct 2013 to 3rd December 2013
Gas Supply Breakdown
1st October 2013 to 3rd December 2013 vs 2012
0
50
100
150
200
250
300
350
400
01-J
un
-13
08-J
un
-13
15-J
un
-13
22-J
un
-13
29-J
un
-13
06-J
ul-
13
13-J
ul-
13
20-J
ul-
13
27-J
ul-
13
03-A
ug
-13
10-A
ug
-13
17-A
ug
-13
24-A
ug
-13
31-A
ug
-13
07
-Sep
-13
14
-Sep
-13
21
-Sep
-13
28
-Sep
-13
05-O
ct-
13
12-O
ct-
13
19-O
ct-
13
26-O
ct-
13
02-N
ov
-13
09-N
ov
-13
16-N
ov
-13
23-N
ov
-13
30-N
ov
-13
Gas Day
mc
m/d
UKCS Norway (est) LNG Imports
BBL I(UK) LRS Supplies
MRS Supplies SRS Supplies Previous Year Actual Supply
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23
Average Daily Supply by TypeOctober/November – 2012/13 vs. 2013/14
UKCS Norway LNGStorage
WithdrawalBBL IUK
2012/2013 90.0 91.0 18.2 9.1 20.7 14.0
2013/2014 86.5 81.5 24.8 8.6 21.6 4.4
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
av
era
ge
mcm
/d
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24
Winter 2012/13 Summer
Isle Of GrainMilford Haven
St. Fergus
Teesside
Theddlethorpe
Easington
(inc. Rough )
Bacton
Burton Point
Barrow
Average Supplies by LocationOctober/November 2013
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25
UKCS Historic Flows and 2013/14 Forecast
0
50
100
150
200
250
10/11 11/12 12/13 13/14 Forecast
mcm
/d
Max Winter Range Winter average Average UKCS on days above 400 Cold Day
110mcm
72mcm
88mcm
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26
Gas Supply Breakdown – IUK1st October 2013 to 2nd December 2013
IUK Export / Import volumes Oct - Dec 2013 vs Previous Year / SAP
-70
-50
-30
-10
10
30
50
01
-Oct
03
-Oct
05
-Oct
07
-Oct
09
-Oct
11
-Oct
13
-Oct
15
-Oct
17
-Oct
19
-Oct
21
-Oct
23
-Oct
25
-Oct
27
-Oct
29
-Oct
31
-Oct
02-N
ov
04-N
ov
06-N
ov
08-N
ov
10-N
ov
12-N
ov
14-N
ov
16-N
ov
18-N
ov
20-N
ov
22-N
ov
24-N
ov
26-N
ov
28-N
ov
30-N
ov
02-D
ec
Vo
lum
es
(m
cm
)
0
10
20
30
40
50
60
70
80
pri
ce
(p
/tm
)
IUK Export IUK Import IUK Import [Previous Year] IUK Export [Previous Year] SAP SAP [Previous Year]
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27
IUK Historic Flows & 2013/14 Forecast
-60
-40
-20
0
20
40
60
80
10/11 11/12 12/13 13/14 Forecast
mcm
/d
Capacity Winter Range Winter average Average IUK on days above 400 Cold Day
27mcm
-20mcm
1mcm
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28
Gas Supply Breakdown – LNG1st October 2013 to 2nd December 2013
LNG terminal flows Oct - Dec 2013 vs Previous Year / SAP
0
5
10
15
20
25
30
35
40
45
01
-Oct
03
-Oct
05
-Oct
07
-Oct
09
-Oct
11
-Oct
13
-Oct
15
-Oct
17
-Oct
19
-Oct
21
-Oct
23
-Oct
25
-Oct
27
-Oct
29
-Oct
31
-Oct
02
-No
v
04
-No
v
06
-No
v
08
-No
v
10
-No
v
12
-No
v
14
-No
v
16
-No
v
18
-No
v
20
-No
v
22
-No
v
24
-No
v
26
-No
v
28
-No
v
30
-No
v
02
-De
c
Volu
me
s (
mcm
)
0
10
20
30
40
50
60
70
80
Pri
ce
(p
/th
)
SouthHookTer DragonTer Isle of grain
DragonTer [Previous Year] Isle of grain [Previous Year] SouthHookTer [Previous Year]
SAP SAP [Previous Year]
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29
LNG Historic Flows and 2013/14 Forecast
0
20
40
60
80
100
120
140
160
10/11 11/12 12/13 13/14 Forecast
mcm
/d
Capacity Winter Range Winter average Average LNG on days above 400 Cold Day
41mcm
8mcm
23mcm
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30
Gas S
up
ply
Bre
akd
ow
n –
LN
GD
eliv
erie
s
0 5
10
15
20
25
30
Oct-10
Nov-10
Dec-10
Jan-11
Feb-11
Mar-11
Apr-11
May-11
Jun-11
Jul-11
Aug-11
Sep-11
Oct-11
Nov-11
Dec-11
Jan-12
Feb-12
Mar-12
Apr-12
May-12
Jun-12
Jul-12
Aug-12
Sep-12
Oct-12
Nov-12
Dec-12
Jan-13
Feb-13
Mar-13
Apr-13
May-13
Jun-13
Jul-13
Aug-13
Sep-13
Oct-13
Nov-13
20
10
/11
20
11
/12
20
12
/13
20
13
/14
Boat Deliveries
LNG
De
live
ries
Qa
tar
Alg
eria
Eg
yp
tM
.EN
ige
riaN
orw
ay
Trinid
ad
UA
EU
nk
no
wn
US
AYe
me
n
20
11
Jap
an
Tsu
na
mi
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31
Gas Supply Breakdown – Norway1st October 2013 to 2nd December 2013
Norwegian* supply volumes Oct - Dec 2013 vs Previous Year / SAP
0
20
40
60
80
100
120
140
01-O
ct
04-O
ct
07-O
ct
10-O
ct
13-O
ct
16-O
ct
19-O
ct
22-O
ct
25-O
ct
28-O
ct
31-O
ct
03-N
ov
06-N
ov
09-N
ov
12-N
ov
15-N
ov
18-N
ov
21-N
ov
24-N
ov
27-N
ov
30-N
ov
Vo
lum
es (
mcm
)
0
10
20
30
40
50
60
70
80
Pri
ce
(p
/th
)
Norway* Norway* [Previous Year] SAP SAP [Previous Year]
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32
Norwegian Pipeline System
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33
Production Flows
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34
Norwegian Historic Flows and 2012/13 Forecast
0
20
40
60
80
100
120
140
10/11 11/12 12/13 13/14 Forecast
mcm
/d
Capacity Winter Range Winter average Average for days above 400 Cold Day
121mcm
47mcm
84mcm
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35
Gas Supply Breakdown – Storage1st October 2013 to 2nd December 2013
Storage flows Oct - Dec 2013 vs Previous Year / SAP
0
10
20
30
40
50
60
01
-Oct
04
-Oct
07
-Oct
10
-Oct
13
-Oct
16
-Oct
19
-Oct
22
-Oct
25
-Oct
28
-Oct
31
-Oct
03
-No
v
06
-No
v
09
-No
v
12
-No
v
15
-No
v
18
-No
v
21
-No
v
24
-No
v
27
-No
v
30
-No
v
Vo
lum
es (
mcm
)
0
10
20
30
40
50
60
70
80
Price
(p
/tm
)
Storage Storage [Previous Year] SAP SAP [Previous Year]
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36
Storage Historic Flows and 2013/14 Forecast
0
20
40
60
80
100
120
140
160
10/11 11/12 12/13 13/14 Forecast
mcm
/d
Capacity Winter Range Winter average Average Storage on days above 400
48mcm
0mcm
10mcm
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37
Storage Stocks - UK1st Oct 2013 to 4th December 2013 Vs Previous Years
SRS Stocks
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Se
p
TW
h
MRS 2010/2011 SRS 2011/2012 SRS 2012/2013 SRS 2013/2014
MRS Stocks
0.00
2.00
4.00
6.00
8.00
10.00
12.00
14.00
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
TW
h
MRS 2010/2011 MRS 2011/2012 MRS 2012/2013 MRS 2013/2014
LRS Stocks
0.00
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
45.00
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
TW
h
LRS 2010/2011 LRS 2011/2012 LRS 2012/2013 LRS 2013/2014
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38
201
2/1
3 R
efle
ctio
nS
tora
ge S
tocks
0
10
20
30
40
50
60
70
80
90
10
0
01-Apr05-Apr09-Apr13-Apr17-Apr21-Apr25-Apr29-Apr
03-May07-May11-May15-May19-May23-May27-May31-May04-Jun08-Jun12-Jun16-Jun20-Jun24-Jun28-Jun02-Jul06-Jul10-Jul14-Jul18-Jul22-Jul26-Jul30-Jul
03-Aug07-Aug11-Aug15-Aug19-Aug23-Aug27-Aug31-Aug04-Sep08-Sep12-Sep16-Sep20-Sep24-Sep28-Sep02-Oct06-Oct10-Oct14-Oct18-Oct22-Oct26-Oct30-Oct03-Nov07-Nov11-Nov15-Nov19-Nov23-Nov27-Nov01-Dec05-Dec09-Dec13-Dec17-Dec21-Dec25-Dec29-Dec
Net Storage Injection (mcm)
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Storage Stock Percentage Full
Ro
ug
hH
um
ble
y G
rove
Hatfie
ld M
oo
rH
orn
se
aH
olfo
rdH
ole
ho
us
e F
arm
Ald
bro
ug
hA
vo
nm
ou
thL
RS
% F
ull 2
012
MR
S %
Fu
ll 2012
SR
S %
Fu
ll 2012
LR
S a
t Max In
j
MR
S @
Max In
jS
RS
@ M
ax In
jL
RS
% F
ull 2
013
MR
S %
Fu
ll 2013
SR
S %
Fu
ll 2013
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39
Storage Stocks - EUFrom 1st Oct 2013 to 30th November 2013 vs. Previous Years
Total EU Weekly Storage Levels
0
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
Oct
No
v
De
c
Ja
n
Fe
b
Ma
r
Ap
r
Ma
y
Ju
n
Ju
l
Au
g
Se
p
Date
mc
m
2010/2011 2011/2012 2012/2013 2013/2014
Hub Area Stock Level (mcm) % Full
Baumgarten 11268 66%
Germany 17605 83%
Iberian 2190 76%
NBP 4460 94%
France 8329 67%
PSV 13619 82%
SOUTH-EAST 392 71%
TTF (Eurohub) 1691 82%
ZEE 525 74%
Total Hubs 60080 77%
Stocklevel Status at 06:00CET on
Wed 04/12/2013
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40
Supply Ranges
0
20
40
60
80
100
120
140
UKCS Norway BBL IUK LNG Imports
mcm
/d
Range Cold Day
110mcm
72mcm
88mcm
121mcm
47mcm
84mcm
27mcm
1mcm
41mcm
8mcm
23mcm
38mcm
2mcm
22mcm
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41
UK
Gas P
rices
Sy
stem
Price
s
1st Ja
n 2
01
3 to
4th
De
cem
be
r 20
13
Vs P
rev
iou
s Ye
ars S
AP
30
40
50
60
70
80
90
10
0
11
0
12
0
13
0
01-Jan-13
15-Jan-13
29-Jan-13
12-Feb-13
26-Feb-13
12-Mar-13
26-Mar-13
09-Apr-13
23-Apr-13
07-May-13
21-May-13
04-Jun-13
18-Jun-13
02-Jul-13
16-Jul-13
30-Jul-13
13-Aug-13
27-Aug-13
10-Sep-13
24-Sep-13
08-Oct-13
22-Oct-13
05-Nov-13
19-Nov-13
03-Dec-13
p/therm
SA
PS
MP
Bu
yS
MP
Se
llS
AP
Pre
vio
us
Ye
ar
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42
Actual Linepack
0
5
10
15
20
25
30
35
0
5
10
15
20
25
30
35
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
Wit
hin
Day R
an
ge o
f L
inep
ack (
mcm
)
Comparison of Within Day Max-Min Range of NTS Linepack (mcm)
Range of Linepack 2002/03 Rolling 30 Day Average Range 2002/03
Range of Linepack 2007/08 Rolling 30 Day Average Range 2007/08
Range of Linepack 2012/13 Rolling 30 Day Average Range 2012/13
Range of Linepack 2013/14 Rolling 30 Day Average Range 2013/14
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43
43
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
00:00
01:00
02:00
03:00
04:00
05:00
Oct 2
013 A
v.
Oct 2
012 A
v.
No
v 2
013 A
v.
No
v 2
012 A
v.
Su
pp
ly P
rofilin
g
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4444
-100%
-80%
-60%
-40%
-20%
0%
20%
40%
60%
80%
100%
01
Oc
t
04
Oc
t
07
Oc
t
10
Oc
t
13
Oc
t
16
Oc
t
19
Oc
t
22
Oc
t
25
Oc
t
28
Oc
t
31
Oc
t
03
No
v
06
No
v
09
No
v
12
No
v
15
No
v
18
No
v
21
No
v
24
No
v
27
No
v
30
No
v
% C
ha
ng
e f
rom
1/2
4 r
ate
Langeled Flow variation (Oct13-Nov13)6 Hourly Average
06:00 - 12:00 12:00 - 18:00 18:00 - 00:00 00:00 - 06:00
Supply Profiling
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45
Interesting Week…WC. 11th November 2013
300
305
310
315
320
325
330
335
340
345
350
355
360
365
370
375
380
11/11/2013 12/11/2013 13/11/2013 14/11/2013 15/11/2013 16/11/2013 17/11/2013
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
06
:00
12
:00
18
:00
00
:00
06
:00
12
:00
18
:00
00
:00
06
:00
12
:00
18
:00
00
:00
06
:00
12
:00
18
:00
00
:00
06
:00
12
:00
18
:00
00
:00
06
:00
12
:00
18
:00
00
:00
06
:00
12
:00
18
:00
00
:00
Lin
ep
ac
k (m
cm
)Tra
de
s (m
cm
)
Sells Buys Actual National Linepack Opening LinePack PCLP
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46
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NTS Constraint Management Actions
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48
Constraint Management Actions
48
To support industry preparations for the winter period National Grid NTS hosted a web based live meeting aimed at
providing NTS users with a refresh of the constraint management tools available to National Grid NTS.
The presentation and supporting audio file can be found here.
http://www2.nationalgrid.com/uk/industry-information/gas-transmission-system-operations/capacity/constraint-management/
A number of the constraint tools coved in the presentation above are reliant on user actions and or a response,
these are;
1.
Locational Energy Actions
At the request of NG NTS OCM subscribers can trade gas (buy or sell) with NG NTS
2.
Entry or Exit Capacity Surrender
At the request of NG NTS users with Firm Capacity entitlements, at the notified locations, can offer capacity surrenders via the Gemini application
3.
Capacity Scalebacks
NG NTS may at time Scaleback Interruptible Entry or Off-peak Exit
capacity at either D-1 or D
User participation & response required User response required if appropriate
ANS will be used to communicate the requirements for the three processes above.
ANS publications will also be displayed on Prevailing view
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49
Constraint Management Actions (cont)
In addition to the Live meeting slides additional supporting information can also be
viewed via the link below. The information displayed also offers a document download
option. Each download provides an overview of the process steps to follow should you
wish to respond to a NG NTS constraint action
http://www2.nationalgrid.com/uk/industry-information/gas-transmission-system-
operations/capacity/constraint-management/
Other useful information can be viewed here;
System Management Principles Statement
http://www2.nationalgrid.com/UK/Industry-information/Business-
compliance/Procurement-and-System-Management-Documents/
Exit Capacity Release Methodology Statement
http://www2.nationalgrid.com/UK/Industry-information/Gas-capacity-
methodologies/Exit-Capacity-Release-Methodology-Statement/
For more information or if you have any questions please contact
[email protected] or 01926 654058.