Operations Monthly Report (May 2003) · Calaveras- Skyline/Walzem Rd Calaveras - Ball Park 5 N...
Transcript of Operations Monthly Report (May 2003) · Calaveras- Skyline/Walzem Rd Calaveras - Ball Park 5 N...
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 1 OF 35
OPERATIONS MONTHLY REPORT
September 2004
ERCOT System Operations
Kent Saathoff, Director Joel Mickey, Manager
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 2 OF 35
Table of Contents Grid Operation..................................................................................................................................3
Peak Demand...............................................................................................................................4
OOMC and RMR Activity............................................................................................................6
Transmission Congestion Management .................................................................................7
Local Congestion .......................................................................................................7
CSC Congestion........................................................................................................9
Notable Events ..........................................................................................................................10
Market Operation............................................................................................................................13
Ancillary Services .....................................................................................................................13
Average Hourly Procurement by Ancillary Service.................................................13
Average MCPC by Ancillary Service.......................................................................14
Average Deployment by Ancillary Service..............................................................15
Balancing Energy..................................................................................................................... 16
Average Balancing Energy Deployed............................................................ 16
% of Total ERCOT Energy Requirement....................................................... 19
Average MCPE.............................................................................................. 21
Average Shadow Price................................................................................. 24
Cost Summary................................................................................................................................27
Ancillary Service Capacity Cost .................................................................... 27
Ancillary Service Deployment Cost ............................................................... 27
OOMC Cost................................................................................................... 28
RMR Cost...................................................................................................... 29
Verified Actual RMR Cost.............................................................................. 30
Local Congestion Costs by Area ................................................................... 31
Local Congestion Costs by Instruction Type ................................................ 31
Local Congestion Costs for Energy .............................................................. 32
Cost Summary .............................................................................................. 33
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 3 OF 35
Grid Operation
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004 Daily Peak Demand
September 2004
0
10000
20000
30000
40000
50000
60000
9/1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9
9/10
9/11
9/12
9/13
9/14
9/15
9/16
9/17
9/18
9/19
9/20
9/21
9/22
9/23
9/24
9/25
9/26
9/27
9/28
9/29
9/30
MW
Peak Demand for the Month: 9/17/04 16:00 55176
Monthly Peak DemandSeptember 2003 - September 2004
0
10000
20000
30000
40000
50000
60000
Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
MW
Note: Peak Demand is Peak Interval DemandPAGE 4 OF 35
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 5 OF 35
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
75.0
80.0
85.0
90.09/
1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9
9/10
9/11
9/12
9/13
9/14
9/15
9/16
9/17
9/18
9/19
9/20
9/21
9/22
9/23
9/24
9/25
9/26
9/27
9/28
9/29
9/30
Houston North South West NorthEast
Trend of Temperature in Five Congestion Management Zones
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 6 OF 35
OOMC and RMR Activity Relative Activity Capacity Purchases - OOMC & RMR
September 2004
0 1 0 0 0 0
23
4 2
23
81
73
56
30 30 30
0 0 0
65
0
10
20
30
40
50
60
70
80
90D
FW
Lare
do A
rea
Eas
t Rio
Gra
nde
Wes
t Rio
Gra
nde
San
Ang
elo
Are
a
Cor
pus
Chr
isti
Are
a
Abi
lene
Are
a
Bry
an A
rea
Nor
thea
st
San
Ant
onio
Uni
t-Day
s*
OOMC RMR
Note: 1 Unit-Day = 1 unit procured during any time period within one trade day.
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 7 OF 35
Local Congestion Management Total Number of Days of Local Congestion Management
22
2019
16
12 1211
10 109
8 87
65 5
4 4 43 3 3 3 3 3
2 2 2 2 2 2 2
0
5
10
15
20
25H
eigh
ts -
PH R
obin
son
TAM
U -
Dan
sby
Ash
erto
n - W
est C
onoc
o
Polk
- H
all A
cres
Aus
trop
Tr
McC
oll R
d - M
cAlle
n2
Hea
rne
- Hea
rne
Cty
Ced
ar H
ill -
Wat
erm
ill
Bria
rcre
st -
Nal
l Lan
e
Ft L
anca
ster
- Ill
inoi
s
Trin
idad
TR
6H
Esko
ta T
r
La P
alm
a - R
io H
ondo
S M
cAlle
n - L
as M
ilpas
Cal
aver
as -
Bal
l Par
k
Hie
delb
erg
- Wes
laco
Jew
et -
Wat
sons
Cha
pel
Segu
in -
Segu
in W
est
Nue
ces
Bay
- H
iway
9
Ode
ssa
- Big
Thr
ee
SMI -
McQ
ueen
ey
Uva
lde
- Asp
halt
Min
es
N S
ange
r - S
prin
g
Ash
erto
n - W
Con
oco
N M
cAlle
n - W
McA
llen2
Rio
Hon
do -
La P
alm
a
Fort
Lan
cast
er -
Illin
ois
4
Rob
erts
on -
Mila
no
Atk
ins
- Bria
rcre
st
Sand
ow T
r.
Alle
n Pl
ano
Alm
a R
d
El D
orad
o - L
ive
Oak
Day
s
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
Heights Sub - Freeway Park Heights - PH Robinson 22 Gibbons Creek - Greens Prairie/East TAMU - Dansby 20
Uvalde - Hamilton Asherton - West Conoco 18 N McAllen - N Edinburg Polk - Hall Acres 16
Austrop - Sandow Austrop Tr 12 N Edinburg - Bates McColl Rd - McAllen 12
Gibbons Creek - Greens Prairie/East Hearne - Hearne City 11 Gibbons Creek - Greens Prairie/East Briarcrest - Nall Lane 10
Big Brown - Richland Chambers Trinidad TR 6H 8 Morgan Creek - Eskota Eskota Tr 8
West Levee - Sergeant Rd Cedar Hill - Watermill 8 West Yates - N McCamey Ft Lancaster - Illinois 8
La Palma - Rio Hondo La Palma - Rio Hondo 7 N Edinburg - Rio Hondo S McAllen - Las Milpas 6
Calaveras- Skyline/Walzem Rd Calaveras - Ball Park 5 N Edinburg - Rio Hondo Hiedelberg - Weslaco 5
Citgo Oak Park - Highway 9 Nueces Bay - Hiway 9 4 Clear Springs - Marion/Zorn Seguin - Seguin West 4
Gibbons Creek - Twin Oaks Switch Jewet - Watsons Chapel 4 Asherton - Eagle Pass Uvalde - Asphalt Mines 3
Clear Springs - Marion/Zorn SMI - McQueeney 3 Frontera - S McAllen N McAllen - W McAllen 3
Morgan Creek - Odessa Odessa - Big Three 3 N Denton - W Denton N Sanger - Spring 3
Allen Renner/Tennyson Allen Plano Alma Rd 2 Asherton - W Conoco 2
Big Lake - N McCamey Fort Lancaster - Illinois 4 2 Gibbons Creek - Greens Prairie/East Atkins - Briarcrest 2
Live Oak - Sonora El Dorado - Live Oak 2 Rio Hondo Tr Rio Hondo - La Palma 2 Sandow Tr. Robertson - Milano 2
Sandow Tr. 2 Sergeant - Watermill Cedar Hill - Watermill 2
Contingency Congestion Element Number of Days
Note: 1 day= units procured during any time period within one trade day. Total numbers of 1 day or less of local congestion management are not shown in the graph. Occurrences of 1 day or less are not listed in table but are totaled in graph. Indicates a Remedial action plan has been developed for the element
PAGE 8 OF 35
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 9 OF 35
CSC Congestion Management
0
5
10
15
20
25
30
35
409/
1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9
9/10
9/11
9/12
9/13
9/14
9/15
9/16
9/17
9/18
9/19
9/20
9/21
9/22
9/23
9/24
9/25
9/26
9/27
9/28
9/29
9/30
EN NH SH SN WN
Num
ber o
f int
erva
ls
Instances of CSC congestion
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 10 OF 35
Notable Events
New Procedures/ Forms/ Operations Bulletins
9/20/2004 Ercot Market Operations Bulletin 19
The relationship between Resource-specific Instructed Deviations and Portfolio Balancing Energy Bids
9/27/2004 Ercot Power Operations Bulletin 110 Phase II Implementation of PRR 425
9/30/2004 Ercot Power Operations Bulletin 111 Temporary Change – Frequency Control Desk CN#158
9/30/2004 Ercot Power Operations Bulletin 112 Temporary Change – Frequency Control Desk CN#159
9/30/2004 Ercot Power Operations Bulletin 113 Temporary Change – Frequency Control Desk CN#160
Security Alert Stage/ Threatcon/ Related issues
Security Threat Alert Yellow (Elevated) maintained through September.
EECP Occurrence None
Major Weather Related Power System Problems None
Major system Voltage problems
None Significant Communication Problems
9/10/2004 10:30-11:30 Portal Down
9/14/2004 Held 10:45 interval
9/14/2004 Held 14:00 interval
9/23/2004 5:45-6:20 Portal Down
9/25/2004 13:00-14:30 A/S Market Extended Major Computer System Problems/Fixes
None
Load Shed incidences
9/1/2004 17:00-19:00 75MW Laar interrupted for transmission security.
9/3/2004 4:30-6:30 Multiple 138 kV lines tripped in Galveston County and approximately 24 MW load was lost. Static line failure was the reported cause.
New SPS & RAP’s
Generation dispatch at STP to protect STP-WA Parrish upon the loss of the double STP-DOW lines.
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 11 OF 35
OCN, Advisory, Alert, Emergency Notice and Major Disturbances Tr
ansm
issi
on A
lert
s (C
ontin
genc
y lo
ads
Elem
ent)
Rob
erts
on -
Mila
no
San
dow
Tr
Dill
ey -
San
Mig
uel l
oads
Der
by -
Pea
rsal
l
Rio
Hon
do -
La P
alm
a lo
ads
Rio
Hon
do
- La
Pal
ma
Uva
lde
- Ham
ilton
load
s A
sher
ton
- W
est C
onoc
o
Uva
lde
- Asp
halt
Min
es
Mid
land
E -
Ode
ssa
load
s O
dess
a -
Ode
ssa
Nor
th
Live
Oak
- S
onor
a lo
ads
El D
orad
o -
Live
Oak
Gib
bons
Cre
ek -
Bry
an E
ast/G
reen
s P
rairi
e lo
ads
Dan
sby
- TA
M
Gib
bons
Cre
ek -
Bry
an E
ast/G
reen
s P
rairi
e lo
ads
Bria
rCre
st -
Nal
l Lan
e
N E
dinb
urg
- Bat
es lo
ads
N M
cAlle
n -
McC
oll R
d
N D
ento
n - W
est D
ento
n lo
ads
N
San
ger -
Spr
ing
Ara
nsas
Pas
s - I
ngle
side
load
s R
inco
n - R
ockp
ort
9/1 * 9/2 * * 9/3 * * 9/4 9/5 * * 9/6 * * * * * * 9/7 9/8 9/9 *
9/10 * 9/11 * * 9/12 * * * 9/13 * * * * 9/14 * * * * 9/15 * * * 9/16 * * 9/17 * * * 9/18 * * * * 9/19 * * 9/20 9/21 * * 9/22 9/23 9/24 9/25 9/26 * 9/27 * 9/28 * 9/29 * 9/30
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 12 OF 35
9/9 13:40-18:00 OCN issued. Load forecast exceeded projected capacity
9/10 08:00 -21:00 OCN issued. Load forecast exceeded projected capacity
9/10 10:30 -11:30 Alert issued. Load forecast exceeded projected capacity
9/15 15:00 – 18:15 Alert issued. Insufficient Up Balancing in North, South, and Houston Zones.
9/16 14:00 – 24:00 Alert issued. Insufficient Up Balancing in North, Northeast, and West Zones.
9/17 15:00 – 18:00 OCN issued. Insufficient Up Balancing projected.
9/17 16:00 – 18:00 OCN issued. Insufficient capacity projected. Update on New Generation
None
Max / Min Temperature Max: 101˚F FW Min: 48.8˚F W
Other None
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 13 OF 35
Market Operation
Ancillary Services
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
Average Hourly Procurement by Ancillary ServiceSeptember 2004
0
200
400
600
800
1000
12009/
1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9
9/10
9/11
9/12
9/13
9/14
9/15
9/16
9/17
9/18
9/19
9/20
9/21
9/22
9/23
9/24
9/25
9/26
9/27
9/28
9/29
9/30
URS DRS RRS NSRS
MW
Average Hourly Procurement by Ancillary ServiceSeptember 2003 - September 2004
0
100
200
300
400
500
600
700
800
900
1000
Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
URS DRS RRS NSRS
M W
PAGE 14 OF 35
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004 Average MCPC by Ancillary Service
September 2004
$0
$5
$10
$15
$20
$25
$30
$35
9/1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
9/ 9/ 9/ 9/ 9/ 9/ 9/ 9/ 9/ 9/ 9/ 9/ 9/ 9/ 9/ 9/ 9/ 9/ 9/ 9/ 9/
URS DRS RRS NSRS
$/M
W
≈399.98
Average MCPC by Ancillary ServiceSeptember 2003 - September 2004
$0
$2
$4
$6
$8
$10
$12
$14
$16
$18
$20
Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
URS DRS RRS NSRS
$/M
W
≈62.28
PAGE 15 OF 35 Note: MCPC of each service is averaged over intervals which have a procurement (>0MW) of that service.
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004 Average Deployment by Ancillary Service
September 2004
0
40
80
120
160
200
240
2809/
1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9
9/10
9/11
9/12
9/13
9/14
9/15
9/16
9/17
9/18
9/19
9/20
9/21
9/22
9/23
9/24
9/25
9/26
9/27
9/28
9/29
9/30
URS DRS RRS NSRS
M W
Average Deployment by Ancillary ServiceSeptember 2003 - September 2004
0
20
40
60
80
100
120
140
160
180
200
Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
URS DRS RRS NSRS
M W
PAGE 16 OF 35
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 17 OF 35
Balancing Energy
Average Balancing Energy Deployed
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
0
200
400
600
800
1000
1200
9/1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9
9/10
9/11
9/12
9/13
9/14
9/15
9/16
9/17
9/18
9/19
9/20
9/21
9/22
9/23
9/24
9/25
9/26
9/27
9/28
9/29
9/30
UBES_H UBES_N UBES_SUBES_W UBES_NE
M W
Average UBES Deployment in Five ZonesSeptember 2004
0
100
200
300
400
500
600
700
9/1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9
9/10
9/11
9/12
9/13
9/14
9/15
9/16
9/17
9/18
9/19
9/20
9/21
9/22
9/23
9/24
9/25
9/26
9/27
9/28
9/29
9/30
DBES_H DBES_N DBES_SDBES_W DBES_NE
Average DBES Deployment in Five ZonesSeptember 2004
MW
PAGE 18 OF 35
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
0
100
200
300
400
500
600
700
800
Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
UBES_H UBES_N UBES_SUBES_W UBES_NE
UBES Deployment: Rolling 12 Month RecordsSeptember 2003 - September 2004
MW
0
100
200
300
400
500
600
Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
DBES_H DBES_N DBES_SDBES_W DBES_NE
DBES Deployment: Rolling 12 Month RecordsSeptermber 2003 -Septermber 2004
MW
PAGE 19 OF 35
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 20 OF 35
Balancing Energy
% of Total ERCOT Energy Requirement
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 21 OF 35
0%
1%
2%
3%
4%
5%
6%
7%9/
1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9
9/10
9/11
9/12
9/13
9/14
9/15
9/16
9/17
9/18
9/19
9/20
9/21
9/22
9/23
9/24
9/25
9/26
9/27
9/28
9/29
9/30
UBES % DBES %
Average BES Deployed: as A Percentage of Total Energy RequirementSeptember 2004
0%
1%
2%
3%
4%
5%
Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
UBES DBES
Average BES Deployed: as A Percentage of Total Energy RequirementSeptember 2003 - September 2004
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 22 OF 35
Balancing Energy
Average MCPE
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 23 OF 35
0
10
20
30
40
50
60
709/
1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9
9/10
9/11
9/12
9/13
9/14
9/15
9/16
9/17
9/18
9/19
9/20
9/21
9/22
9/23
9/24
9/25
9/26
9/27
9/28
9/29
9/30
MCPE_H MCPE_N MCPE_SMCPE_W MCPE_NE
Average MCPE in Five ZonesSeptember 2004
$/M
W
0
10
20
30
40
50
60
70
80
90
0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 92 96
MCPE_H MCPE_N MCPE_SMCPE_W MCPE_NE
Average MCPE at Each Interval for Five ZonesSeptember 2004
Interval
$/M
W
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 24 OF 35
0
5
10
15
20
25
30
35
40
45
50
Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
MCPE_H MCPE_N MCPE_SMCPE_W MCPE_NE
MCPE: Rolling 12 Month RecordsSeptember 2003 - September 2004
$/M
W
0
1
2
3
4
5
6
7
Sep Oct Nov Dec Dec Jan Feb Mar Apr Apr May Jun Jul Aug Sep
Trend of Average Fuel IndexSeptember 2003 - September 2004
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 25 OF 35
Balancing Energy
Average Shadow Price
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
0
2
4
6
8
10
12
14
16
18
20
22
24
269/
1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9
9/10
9/11
9/12
9/13
9/14
9/15
9/16
9/17
9/18
9/19
9/20
9/21
9/22
9/23
9/24
9/25
9/26
9/27
9/28
9/29
9/30
EN NH SH SN WN
Average Shadow Price September 2004
$/M
W
0
1
2
3
4
5
6
Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
EN NH SH SN WN
$/M
W
Average Shadow Price September 2003 - September 2004
PAGE 26 OF 35
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 27 OF 35
Cost Summary
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
$-
$0.5
$1.0
$1.5
$2.0
$2.59/
1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9
9/10
9/11
9/12
9/13
9/14
9/15
9/16
9/17
9/18
9/19
9/20
9/21
9/22
9/23
9/24
9/25
9/26
9/27
9/28
9/29
9/30
Total: $28.08 Million
Mill
ions
$
DRS URS RRS NSRS
Ancillary Service Capacity CostSeptember 2004
$(0.2)
$(0.1)
$-
$0.1
$0.2
$0.3
$0.4
$0.5
$0.6
9/1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9
9/10
9/11
9/12
9/13
9/14
9/15
9/16
9/17
9/18
9/19
9/20
9/21
9/22
9/23
9/24
9/25
9/26
9/27
9/28
9/29
9/30
Total w DRS: $2.29 Million Total w/o DRS: $6.20 Million
Mill
ion
$
DRS URS RRS NSRS
Ancillary Service Deployment CostSeptember 2004
PAGE 28 OF 35 Note: There is not a price for self-arranged Ancillary Services. MCPC is used to calculate the cost for self-arrangement.
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 29 OF 35
OOMC Cost At Final SettlementSeptember 2004
0.0
0.1
0.2
0.39/
1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9
9/10
9/11
9/12
9/13
9/14
9/15
9/16
9/17
9/18
9/19
9/20
9/21
9/22
9/23
9/24
9/25
9/26
9/27
9/28
9/29
9/30
Start-Up Payment (Total: $1.21 Million)
Total OOMC Payment (Total: $3.20 Million)
Mill
ion
$
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.59/
1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9
9/10
9/11
9/12
9/13
9/14
9/15
9/16
9/17
9/18
9/19
9/20
9/21
9/22
9/23
9/24
9/25
9/26
9/27
9/28
9/29
9/30
Energy Stand By Start Up BENA Credit
RMR Cost (Initial Settlement) September 2004
Mill
ion
$
Total Net Cost $8.04 Million
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.3
0.4
0.5
0.6
9/1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9
9/10
9/11
9/12
9/13
9/14
9/15
9/16
9/17
9/18
9/19
9/20
9/21
9/22
9/23
9/24
9/25
9/26
9/27
9/28
9/29
9/30
Mill
ions
$
RMR Net Cost (Initial Settlement) September 2004
PAGE 30 OF 35
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 31 OF 35
-30
-20
-10
0
10
20
30
40
50
Jan-
04
Feb-
04
Mar
-04
Apr
-04
May
-04
Jun-
04
Jul-0
4
Aug
-04
Sep-
04
Mill
ion
$
RMR Payments BENA Credit RMR Net Costs
Verified Actual RMR Cost
RMR Net Cost: $94.98 Million
*Note: 1. Trade dates 1/1/04 thru 8/22/04 complete with Final Resettlement data, using verifiable actual cost data provided by
the RMR Unit owner. 2. Trade date 8/23/04 thru 9/30/04 complete with Initial Resettlement data, using estimated eligible costs.
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
Austin $0.17
Corpus $0.00
Houston $0.38
San Antonio$0.40
South $0.64
Valley $1.11
West $0.16
Wind $0.16
DFW $2.67
North $2.43
Total: $8.12 Million
Mill
ion
$Total Local Congestion Costs by Area
September 2004
$0.41
$0.01
$3.20 $3.27
$0.18$1.05
LBE-operate at or below a level
LBE-operate at or above a level
LBE-hold at a level
Manual OOME DN
Manual OOME UP
OOMC
Total Local Congestion Costs by Instruction Type (in Million $)September 2004
PAGE 32 OF 35
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 33 OF 35
0.0
0.2
0.4
0.69/
1
9/2
9/3
9/4
9/5
9/6
9/7
9/8
9/9
9/10
9/11
9/12
9/13
9/14
9/15
9/16
9/17
9/18
9/19
9/20
9/21
9/22
9/23
9/24
9/25
9/26
9/27
9/28
9/29
9/30
Total $4.9 Million
Local Congestion Cost for EnergySeptember 2004
Mill
ion
$
DN Payment for Aggregated Units for Both Manual and LBE Deployment
UP Payment for Aggregated Units for Both Manual and LBE Deployment DN Payment for LBE Deployment without Market Solution
UP Payment for LBE Deployment without Market Solution
DN Payment for Manual OOME Deployment
UP Payment for Manual OOME Deployment
DN Payment for LBE Deployment with Market Solution UP Payment for LBE Deployment with Market Solution
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 34 OF 35
-1
0
1
2
3
4
59/
1/04
9/2/
04
9/3/
04
9/4/
04
9/5/
04
9/6/
04
9/7/
04
9/8/
04
9/9/
04
9/10
/04
9/11
/04
9/12
/04
9/13
/04
9/14
/04
9/15
/04
9/16
/04
9/17
/04
9/18
/04
9/19
/04
9/20
/04
9/21
/04
9/22
/04
9/23
/04
9/24
/04
9/25
/04
9/26
/04
9/27
/04
9/28
/04
9/29
/04
9/30
/04
Mill
ions
$
DBES UBESLBES/OOME OOMCRMR A/S
Cost Summary(Total w DBES: $ 80.84 Total w/o DBES: $ 94.88)
Note: 1. DBES cost is a credit to system costs and therefore is shown as a negative number here to differentiate it from the other types of Reliability Costs. 2. BES deployment costs include two parts: the cost for Power Balance and the cost for CSC Congestion. Due to Relaxed Balanced Schedule, the cost paid for Power Balance covers both the difference between ERCOT load forecast and QSE's schedule and the difference between QSE's Relaxed scheduled load and the load it would schedule should RBS were not allowed. The cost for Power Balance is not further divided accordingly because currently we do not have a way to differentiate these two types of Power Balance costs.
ERCOT OPERATIONS MONTHLY REPORT – SEPTEMBER 2004
PAGE 35 OF 35
Please contact Shuye Teng at 512-248-3998 or email at [email protected] should you have any questions.