Operations Monthly Report 12 2004 · ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004 PAGE 5 OF 34...
34
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004 PAGE 1 OF 34 OPERATIONS MONTHLY REPORT December 2004 Kent Saathoff, Director ERCOT System Operations Joel Mickey, Manager Market Operations Support
Transcript of Operations Monthly Report 12 2004 · ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004 PAGE 5 OF 34...
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 1 OF 34
OPERATIONS MONTHLY REPORT
December 2004
Kent Saathoff, Director ERCOT System Operations
Joel Mickey, Manager Market Operations Support
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 2 OF 34
Acronyms............................................................................................................................................................................3
Grid Operation ...................................................................................................................................................................4 Daily Peak Demand ........................................................................................................................................................................................5 13 Month Review of Peak Demand ...............................................................................................................................................................5 Trend of Temperature in Five Congestion Management Zones...................................................................................................................6 Relative Activity Capacity Purchases – OOMC & RMR.............................................................................................................................6 Total Number of Days of Local Congestion Management...........................................................................................................................7 Instances of CSC Congestion .........................................................................................................................................................................8 Notable Events.................................................................................................................................................................................................9
Market Operation ............................................................................................................................................................11 Ancillary Services .....................................................................................................................................................................11
Average Hourly Procurement by Ancillary Service....................................................................................................................................12 13 Month Review of Average Hourly Procurement by Ancillary Service ................................................................................................12 Average MCPC by Ancillary Service..........................................................................................................................................................13 13 Month Review of Average MCPC by Ancillary Service.......................................................................................................................13 Average Deployment by Ancillary Service .................................................................................................................................................14 13 Month Review of Average Deployment by Ancillary Service..............................................................................................................14
Balancing Energy......................................................................................................................................................................15 Average Balancing Energy Deployed ................................................................................................................................15
Average UBES Deployment in Five Zones.................................................................................................................................................16 Average DBES Deployment in Five Zones.................................................................................................................................................16 13 Month Review of UBES Deployment ....................................................................................................................................................17 13 Month Review of DBES Deployment ....................................................................................................................................................17
% of Total ERCOT Energy Requirement ...........................................................................................................................18 Average BES Deployed: as A Percentage of Total Energy Requirement..................................................................................................19 13 Month Review of Average BES Deployed: as A Percentage of Total Energy Requirement ..............................................................19
Average MCPE ...........................................................................................................................................................................20 Average MCPE in Five Zones......................................................................................................................................................................21 Average MCPE at Each Interval for Five Zones.........................................................................................................................................21 13 Month Review of MCPE.........................................................................................................................................................................22 Trend of Average Fuel Index........................................................................................................................................................................22
Average Shadow Price ............................................................................................................................................................23 Average Shadow Price..................................................................................................................................................................................24 13 Month Review of Average Shadow Price...............................................................................................................................................24
Cost Summary.................................................................................................................................................................25 Ancillary Service Capacity Cost...................................................................................................................................................................26 13 Month Review of Ancillary Service Capacity Cost ...............................................................................................................................26 Ancillary Service Deployment Cost.............................................................................................................................................................27 13 Month Review of Ancillary Service Deployment Cost .........................................................................................................................27 OOMC Cost At Final....................................................................................................................................................................................28 13 Month Review of OOMC Cost At Final Settlement and True Up........................................................................................................28 RMR Cost (Initial Settlement)......................................................................................................................................................................29 RMR Net Cost (Initial Settlement)...............................................................................................................................................................29 Verified Actual RMR Cost* .........................................................................................................................................................................30 Total Local Congestion Costs by Area.........................................................................................................................................................31 Total Local Congestion Costs by Instruction Type (in Million $)..............................................................................................................31 Local Congestion Cost for Energy ...............................................................................................................................................................32 Cost Summary...............................................................................................................................................................................................33 13 Month Review of Cost Summary............................................................................................................................................................33
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 3 OF 34
Acronyms
AS Ancillary Service
BES Balancing Energy Service
DBES Down Balancing Energy Service
DRS Down Regulation Service
LBE Local Balancing Energy
MCPC Market Clearing Price for Capacity
MCPE Market Clearing Price for Energy
NSRS Non-Spinning Reserve Service
OOMC Out of Merit Capacity
OOME Out of Merit Energy
QSE Qualified Scheduling Entity
RMR Reliability Must Run
RPRS Replacement Reserve Service
RRS Responsive Reserve Service
UBES Up Balancing Energy Service
URS Up Regulation Service
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 4 OF 34
Grid Operation
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 5 OF 34
Daily Peak Demand
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
50000
12/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
MW
Peak Demand for the Month: 12/23/04 8:45 44007
13 Month Review of Peak Demand
0
10000
20000
30000
40000
50000
60000
Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
MW
Note: Peak Demand is Peak Interval Demand
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 6 OF 34
Trend of Temperature in Five Congestion Management Zones
20.0
30.0
40.0
50.0
60.0
70.0
80.0
12/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
Houston North South West NorthEast
Relative Activity Capacity Purchases – OOMC & RMR
3
8
11
17
14
1
39
44 43
31
6
15
10
0
5
10
15
20
25
30
35
40
45
50
Wes
t Rio
Gra
nde
Eas
t Rio
Gra
nde
Lare
do A
rea
Cor
pus
Chr
isti
Are
a
DFW
Bry
an A
rea
Abi
lene
Are
a
Wes
tern
Are
a
San
Ant
onio
San
Ang
elo
Are
a
Nor
thea
st
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 – DECEMBER 2004
Total Number of Days of Local Congestion Management
15
12
7 7 7
54
3 3 3 3 32 2 2 2 2 2 2 2 2 2 2 2 2
0
2
4
6
8
10
12
14
16
Hei
ghts
- PH
Rob
inso
n
Ash
erto
n - W
est C
onoc
o
Aus
trop
Tr
Ara
nsas
Pas
s - N
aval
bas
e
Ode
ssa
- Sw
Mos
s
Phar
r MVE
C -
Polk
Rio
Hon
do -
La P
alm
a
Five
Poi
nts
- Wes
t Sid
e
Cic
o - C
omfo
rt
Gill
es -
Wol
f Cre
ek
Mili
tary
Hig
hway
T2
Boo
nevi
lle -
Sutto
n
Bat
es T
r
Ced
ar H
ill -
Wat
erm
ill
Uva
lde
- Asp
halt
Min
es
Win
ches
ter -
Fay
ette
ville
Wat
erm
ill -
Ced
ar H
ill S
witc
h
Hol
t Sw
T1
Mid
way
Lan
e - O
zona
Big
foot
Tr
Com
fort
- C
ico
Flyn
n - F
airm
ont
Gen
eral
Tire
- R
exal
l
Hai
ne D
r - L
a Pa
lma
Port
Ara
nsas
- M
usta
ng Is
land
Day
s
Contingency Congestion Element Number of Days Heights Sub - Freeway Park Heights - PH Robinson 15
Uvalde - Hamilton Asherton - West Conoco 12 Celanese Bishop - Barney Davis Aransas Pass - Naval base 7
Austrop - Sandow Austrop Tr 7 Midland East - Odessa Odessa - Sw Moss 7
N Edinburg - Bates Pharr MVEC - Polk 5 Rio Hondo Tr Rio Hondo - La Palma 4
Calaveras- Skyline/Walzem Rd Five Points - West Side 3 Cico - Helotes Gilles - Wolf Creek 3
Military Highway T1 Military Highway T2 3 Dilley Switch - San Miguel Bigfoot Tr 2
Hearne Tr Booneville - Sutton 2 Sargent - Watermill Cedar Hill - Watermill 2
Clear Springs - Marion/Zorn Cico - Comfort 2 Zorn - Hayes Comfort - Cico 2
Forney Elkton - Tricorner Flynn - Fairmont 2 Morgan Creek - Odessa General Tire - Rexall 2 La Palma - Rio Hondo Haine Dr - La Palma 2
Holt Switch - Andrews North Holt Sw T1 2 Big Lake - Friend Ranch Midway Lane - Ozona 2 Asherton - Eagle Pass Uvalde - Asphalt Mines 2
Big Brown - Venus Switch Watermill - Cedar Hill Switch 2 Austrop - Lost Pines Winchester - Fayetteville 2
Note: 1 day= units procured during any time period within one trade day. Total numbers of 1 day or less of local congestion management arenot shown in the graph. Occurrences of 1 day or less are not listed in table but are totaled in graph.
PAGE 7 OF 34
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 8 OF 34
Instances of CSC Congestion
0
10
20
30
40
50
60
7012
/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
EN SN NH SH WN
Num
ber o
f int
erva
ls
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 9 OF 34
Notable Events
New Procedures/ Forms/ Operations Bulletins
12/06/04 Ercot Power Operations Bulletin 121 Verbal Dispatch Exception
12/06/04 Ercot Power Operations Bulletin 122 Verbal Dispatch Exception
12/09/04 Ercot Power Operations Bulletin 123 Procedures when DC Tie is over scheduled
12/09/04 Ercot Power Operations Bulletin 124 Failure to clear Day Ahead A/S Market
12/09/04 Ercot Power Operations Bulletin 125 Update of QSE list
12/09/04 Ercot Power Operations Bulletin 126 Update of QSE list
12/09/04 Ercot Power Operations Bulletin 127 Managing Maintenance Level 2 and 3 outages TCN#176
12/09/04 Ercot Power Operations Bulletin 128 Extending TCN#138 TCN#178
12/09/04 Ercot Power Operations Bulletin 129 Monitoring West Texas Generation TCN#183
12/09/04 Ercot Power Operations Bulletin 130 Granting VDE’s TCN#178
12/09/04 Ercot Power Operations Bulletin 131 Managing Maintenance Level 2 and 3 outages TCN#172
12/09/04 Ercot Power Operations Bulletin 132 Verification of Dynamic Ratings TCN#183
12/20/04 Ercot Market Operations Bulletin 20 SPD Price Administration Process
12/21/04 Ercot Power Operations Bulletin 133 OOME for CT’s
12/21/04 Ercot Market Operations Bulletin 21 Shadow Price Calculations for 5 Zone, 6 CSC model for 2005
Security Alert Stage/ Threatcon/ Related issues
None/Yellow
EECP Occurrence
None
Major Weather Related Power System Problems
None Major system Voltage problems
None Significant Communication Problems
12/1/04 01:45-02:00 Held interval. OC1 inadvertently activated
12/3/04 02:15-03:30 Held interval. One QSE experienced a Portal failure and scheduling issues. Major Computer System Problems/Fixes
None Load Shed incidences
None New SPS & RAP’s
None
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 10 OF 34
OCN, Advisory, Alert, Emergency Notice and Major Disturbances
12/1/04 02:00-04:30 OCN issued. Capacity shortage 08:00 - 10:00
12/1/04 04:00-04:30 Alert issued. Capacity shortage 08:00 - 10:00
12/2/04 13:30-15:20 Transmission Alert. Loss of Holt Switch-Permian Basin loads Moss Switch-Amoco North Cowden Tap.
12/7/04 18:45-19:25 Transmission Alert. Centerville Road - Garland Road exceeding first contingency limit.
12/9/04 09:20 -11:20 OCN issued. Capacity shortage 18:00 – 20:00
12/9/04 14:40 -20:00 OCN issued. Capacity shortage 19:00 – 20:00
12/21/04 07:30-24:00 OCN issued. Cold temperatures and freezing precipitation forecasted.
12/21/04 10:00-17:00 Transmission Alert. Loss of Holt Sw – N Andrews loads Holt Tr.
12/22/04 00:00-24:00 OCN issued. Cold temperatures and freezing precipitation forecasted.
12/23/04 19:00 – 22:45 Transmission Alert. Loss of Barney Davis – Celanese Bishop results in islanding in South Corpus Christie area.
12/24/04 06:00 – 14:30 Transmission Alert. Loss of Uvalde – Hamilton loads Asherton – W Monaco.
12/24/04 08:15 – 12/25 15:00 Transmission Alert. Loss of Barney Davis U2 loads Port Aransas – Mustang Island.
12/24/04 11:30 Transmission Alert. Loss of Menard T1 loads Ft. Mason – Mason.
12/24/04 00:00 – 12/25 15:00 Advisory issued for low temperatures and strong winds.
12/25/04 05:30 – 12:00 Transmission Alert. Loss of Uvalde Hamilton loads Asherton – W Conoco.
12/25/04 08:15 Transmission Alert. Loss of Barney Davis U2 loads Port Aransas – Mustang Island.
12/26/04 06:45 – 12:30 Transmission Alert. Loss of Bates U1 loads Bates T1.
12/27/04 03:15 – 05:00 OCN issued for 08:00 capacity shortage.
12/30/04 14:30 – 16:00 OCN issued for 19:00 capacity shortage.
12/31/04 16:30 OCN issued for 1/1/05. Insufficient Down Reg for HE 06,23, & 24.
Update on New Generation
None
Max / Min Temperature
Max: 84.6˚F S Min: 13˚F N
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 11 OF 34
Market Operation Ancillary Services
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 12 OF 34
Average Hourly Procurement by Ancillary Service
0
200
400
600
800
1000
120012
/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
DRS URS RRS NSRS
M W
13 Month Review of Average Hourly Procurement by Ancillary Service
0
200
400
600
800
1000
1200
Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DRS URS RRS NSRS
M W
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 13 OF 34
Average MCPC by Ancillary Service
$0
$5
$10
$15
$20
$25
$30
$35
$4012
/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
DRS URS RRS NSRS
$/M
W
13 Month Review of Average MCPC by Ancillary Service
$0
$4
$8
$12
$16
$20
$24
Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DRS URS RRS NSRS
$/M
W
≈ 62.28
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 14 OF 34
Average Deployment by Ancillary Service
0
50
100
150
200
250
300
35012
/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
DRS URS RRS NSRS
M W
13 Month Review of Average Deployment by Ancillary Service
0
20
40
60
80
100
120
140
160
180
200
Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DRS URS RRS NSRS
M W
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 15 OF 34
Balancing Energy Average Balancing Energy Deployed
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 16 OF 34
Average UBES Deployment in Five Zones
0
100
200
300
400
500
600
700
800
900
1000
12/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
UBES_H UBES_N UBES_SUBES_W UBES_NE
M W
Average DBES Deployment in Five Zones
0
100
200
300
400
500
600
700
12/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
DBES_H DBES_N DBES_SDBES_W DBES_NE
MW
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 17 OF 34
13 Month Review of UBES Deployment
0
100
200
300
400
500
600
700
Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UBES_H UBES_N UBES_SUBES_W UBES_NE
MW
13 Month Review of DBES Deployment
0
100
200
300
400
500
600
Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DBES_H DBES_N DBES_SDBES_W DBES_NE
MW
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 18 OF 34
Balancing Energy % of Total ERCOT Energy Requirement
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 19 OF 34
Average BES Deployed: as A Percentage of Total Energy Requirement
0%
1%
2%
3%
4%
5%
6%
7%12
/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
UBES % DBES %
13 Month Review of Average BES Deployed: as A Percentage of Total Energy Requirement
0%
1%
2%
3%
4%
5%
Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UBES DBES
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 20 OF 34
Balancing Energy Average MCPE
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 21 OF 34
Average MCPE in Five Zones
(5)
10
25
40
55
70
8512
/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
MCPE_H MCPE_N MCPE_SMCPE_W MCPE_NE
$/M
W
Average MCPE at Each Interval for Five Zones
(40)
(20)
0
20
40
60
80
100
120
140
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
Interval
$/M
W
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 22 OF 34
13 Month Review of MCPE
0
10
20
30
40
50
60
Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
MCPE_H MCPE_N MCPE_SMCPE_W MCPE_NE
$/M
W
Trend of Average Fuel Index
0.000
1.000
2.000
3.000
4.000
5.000
6.000
7.000
Dec Jan Feb Mar Mar Apr May Jun Jul Aug Aug Sep Oct Nov Dec
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 23 OF 34
Balancing Energy Average Shadow Price
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 24 OF 34
Average Shadow Price
0
20
40
60
80
100
120
140
16012
/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
EN NH SH SN WN
$/M
W
13 Month Review of Average Shadow Price
0
1
2
3
4
5
6
7
8
Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
EN NH SH SN WN
$/M
W
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 25 OF 34
Cost Summary
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 26 OF 34
Ancillary Service Capacity Cost
$-
$0.5
$1.0
$1.5
$2.0
$2.5
$3.0
12/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
Total: $52.50 Million
Mill
ions
$
DRS URS RRS NSRS
13 Month Review of Ancillary Service Capacity Cost
$-
$10.0
$20.0
$30.0
$40.0
$50.0
$60.0
Dec Jan
Feb
Mar
Apr
May
Jun
Jul
Aug Sep
Oct
Nov
Dec
Mill
ions
$
DRS URS RRS NSRS
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 – DECEMBER 2004
PAGE 27 OF 34
Ancillary Service Deployment Cost
$(0.4)
$(0.3)
$(0.2)
$(0.1)
$-
$0.1
$0.2
$0.3
$0.4
$0.5
12/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
Total w DRS: $ 1.47 Million Total w/o DRS: $5.76 Million
Mill
ion
$
DRS URS RRS NSRS
13 Month Review of Ancillary Service Deployment Cost
$(8.0)
$(6.0)
$(4.0)
$(2.0)
$-
$2.0
$4.0
$6.0
$8.0
Dec Jan
Feb
Mar
Apr
May Jun
Jul
Aug Sep
Oct
Nov
Dec
Mill
ions
$
DRS URS RRS NSRS
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 28 OF 34
OOMC Cost At Final
0.0
0.2
0.4
0.612
/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
Start-Up Payment (Total: $.49 Million)
Total OOMC Payment (Total: $3.82 Million)
Mill
ion
$
13 Month Review of OOMC Cost At Final Settlement and True Up
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
Dec Jan
Feb
Mar
Apr
May Jun
Jul
Aug
Sep
Oct
Nov
Dec
Total OOMC Payment (Total: $91.82 Million)
Mill
ion
$
Up to date as of 1/1/2005
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 29 OF 34
RMR Cost (Initial Settlement)
-1.0
-0.5
0.0
0.5
1.0
1.512
/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
Energy Stand By Start Up BENA Credit
Mill
ion
$
RMR Net Cost (Initial Settlement)
Total Net Cost $9.69 Million
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
12/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
Mill
ions
$
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 30 OF 34
Verified Actual RMR Cost*
-30
-20
-10
0
10
20
30
40
50Ja
n-04
Feb-
04
Mar
-04
Apr
-04
May
-04
Jun-
04
Jul-0
4
Aug
-04
Sep-
04
Oct
-04
Nov
-04
Dec
-04
Mill
ion
$
RMR Payments BENA Credit RMR Net Costs
RMR Net Cost: $119.53
*Note: 1. Trade dates 1/1/04 thru 11/21/04 complete with Final Resettlement data, using verifiable actual cost data provided by
the RMR Unit owner. 2. Trade date 11/22/04 thru 12/31/04 complete with Initial Resettlement data, using estimated eligible costs.
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 31 OF 34
Total Local Congestion Costs by Area
Austin $0.20
Corpus $0.80
Houston $0.31 San Antonio
$0.18
South $1.10
Valley $0.80
West $2.70
Wind $0.00
DFW $0.77
North $0.72
Total: $7.56 Million
Mill
ion
$
Total Local Congestion Costs by Instruction Type (in Million $)
$0.93
$0.54
$0.83
$3.82
$0.00
$1.43
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
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 32 OF 34
Local Congestion Cost for Energy
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.812
/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
Total $3.7 Million
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 – DECEMBER 2004
PAGE 33 OF 34
Cost Summary (Total w DBES: $109.24 Total w/0 DBES: $122.30)
-1
0
1
2
3
4
5
6
7
12/1
12/2
12/3
12/4
12/5
12/6
12/7
12/8
12/9
12/1
0
12/1
1
12/1
2
12/1
3
12/1
4
12/1
5
12/1
6
12/1
7
12/1
8
12/1
9
12/2
0
12/2
1
12/2
2
12/2
3
12/2
4
12/2
5
12/2
6
12/2
7
12/2
8
12/2
9
12/3
0
12/3
1
Mill
ions
$
DBES UBES LBES/OOMEOOMC RMR A/S
13 Month Review of Cost Summary
0
20
40
60
80
100
120
140
Dec Jan
Feb
Mar
Apr
May Jun
Jul
Aug Sep
Oct
Nov
Dec
Mill
ions
$
Total with DBES (Total: $964.47 Million)
Total Without DBES (Total: $1,211.04 Million)
ERCOT OPERATIONS MONTHLY REPORT – DECEMBER 2004
PAGE 34 OF 34
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.
Please contact Shuye Teng at 512-248-3998 or email at [email protected] should you have any questions.
