operations monthly report (may 2003) · marion - hill country/skyline cibolo - schertz 2 kirkland...

ERCOT OPERATIONS MONTHLY REPORT – MAY 2004

PAGE 1 OF 32

OPERATIONS MONTHLY REPORT

May 2004

ERCOT System Operations

Kent Saathoff, Director Joel Mickey, Manager


PAGE 2 OF 32

Table of Contents

Grid Operation..................................................................................................................................3

Peak Demand...............................................................................................................................4

OOMC and RMR Activity............................................................................................................6

Transmission Congestion Management .................................................................................7

Local Congestion .......................................................................................................7

CSC Congestion........................................................................................................8

Notable Events ............................................................................................................................9

Market Operation............................................................................................................................11

Ancillary Services .....................................................................................................................11

Balancing Energy..............................................................................................................................15

Average Balancing Energy Deployed............................................................ 16

% of Total ERCOT Energy Requirement....................................................... 18

Average MCPE.............................................................................................. 20

Average Shadow Price................................................................................. 23

Cost Summary................................................................................................................................25

Ancillary Service Capacity Cost .................................................................... 26

Ancillary Service Deployment Cost ............................................................... 26

OOMC Cost................................................................................................... 27

Local Congestion Cost .................................................................................. 28

RMR Cost...................................................................................................... 29

Verified Actual RMR Cost.............................................................................. 30

Cost Summary .............................................................................................. 31


PAGE 3 OF 32

Grid Operation

ERCOT OPERATIONS MONTHLY REPORT – MAY 2004 Daily Peak Demand

May 2004

0

10000

20000

30000

40000

50000

5/1

5/2

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

5/23

5/24

5/25

5/26

5/27

5/28

5/29

5/30

5/31

MW

Peak Demand for the Month: 5/31/04 17:00 48701

Monthly Peak DemandMay 2003 - May 2004

0

5000

10000

15000

20000

25000

30000

35000

40000

45000

50000

55000

60000

65000

May-03 Jun-03 Jul-03 Aug-03 Sep-03 Oct-03 Nov-03 Dec-03 Jan-04 Feb-04 Mar-04 Apr-04 May-04

MW

Note: Peak Demand is Peak Interval DemandPAGE 4 OF 32


PAGE 5 OF 32

30.0

35.0

40.0

45.0

50.0

55.0

60.0

65.0

70.0

75.0

80.0

85.0

90.05/

1

5/2

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

5/23

5/24

5/25

5/26

5/27

5/28

5/29

5/30

5/31

Houston North South West NorthEast

Trend of Temperature in Five Congestion Management Zones


PAGE 6 OF 32

OOMC and RMR Activity Relative Activity Capacity Purchases - OOMC & RMR

May 2004

29

0 0 0 0 0

17

0

39

57

31 31 2824

0

133

0

20

40

60

80

100

120

140

DFW

Eas

t Rio

Gra

nde

Lare

do A

rea

Cor

pus

Chr

isti

Are

a

Wes

t Rio

Gra

nde

San

Ang

elo

Are

a

Abi

lene

Are

a

Wes

tern

Are

a

Day

s

OOMC RMR

Note: 1 Unit-Day = 1 unit procured during any time period within one trade day.


PAGE 7 OF 32

Local Congestion Management

Total Number of Days of Local Congestion Management

13

11

87

54 4

2 2 2 2 2 2 2

0

5

10

15N

uece

s B

ay -

Whi

tepo

int

Alle

n Sw

itch

- Ben

Dav

is

Ode

ssa

- Big

Thr

ee

Polk

- H

all A

cres

Mar

tin L

ake

- Tric

orne

r

Step

henv

ille

- Lin

glev

ille

Mos

s Sw

itch

- Am

aco

N C

owde

n Ta

p

Cib

olo

- Sch

ertz

SMI -

McQ

ueen

ey

Trin

idad

- M

artin

Lak

e

N E

dinb

urg

- Moo

re F

ield

Cal

aver

as -

Bal

l Par

k

Ced

ar H

ill -

Wat

erm

ill

Cen

tral

Exp

ress

way

- K

irkla

nd P

ark

Day

s

Contingency Congestion Element Number of Days

Lon Hill - Whitepoint Nueces Bay - Whitepoint 13Allen Switch - Royse Switch/Monticello Allen Switch - Ben Davis 11N McAllen - N Edinburg Polk - Hall Acres 7Enterprise - Trinidad/Martin Lake Martin Lake - Tricorner 5Odessa Switch - Moss Moss Switch - Amaco N Cowden Tap 4Morgan Creek - Odessa Odessa - Big Three 4Midland East - Odessa Odessa - Big Three 4Benbrook -Parker/Graham Stephenville - Lingleville 4West Levee - Watermill Cedar Hill - Watermill 2N McAllen - N Edinburg N Edinburg - Moore Field 2Marion - Hill Country/Skyline Cibolo - Schertz 2Kirkland Park - North Haven Central Expressway - Kirkland Park 2Enterprise - Stryker Creek Trinidad - Martin Lake 2Clear Springs - Marion/Zorn SMI - McQueeney 2Calaveras- Skyline/Walzem Rd Calaveras - Ball Park 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 are not shown in the graph. Occurrences of 1 day or less are not listed in table but are totaled in graph.


PAGE 8 OF 32

CSC Congestion Management

0

5

10

15

20

25

30

35

40

455/

1

5/2

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

5/23

5/24

5/25

5/26

5/27

5/28

5/29

5/30

5/31

EN SN NH SH WN

Num

ber o

f int

erva

ls

Instances of CSC congestion


PAGE 9 OF 32

Notable Events

New Procedures/ Forms/ Operations Bulletins Bulletin 82 Modified section 2.9 to include handling Inadvertent Payback (Frequency).

Bulletin 83 Updated the first bullet in section 3.5 Appendix 4 stating that during the months of April, May or October for hours that the forecasted load will be within 85% (was 80%) of forecasted peak load for the operating day the (Day Ahead).

Bulletin 84 Added new section 2.1.3 to address initial synchronization of new resources (Supervisor).

Bulletin 85 Revision for consistent process for OC1 changes needed to support outages. Also changed verbiage in section 2.2.1 from a constraint to a CSC (Transmission).

Bulletin 86 Clarification of section 2.5.3 “Operator Instructions for High Frequency” (Frequency).

Bulletin 87 Section 2.2.1 “Monitoring Outages” added back in procedure, existing 2.2.1 moved to new section 2.2.2 “OC1 Limits for Outage Support” (Transmission).

Bulletin 88 EECP Load Shed Table updated in the Operating Guides section 4.5.3.

Bulletin 89/90 Added new section 2.6.4 “Notification of Condition Termination” (Frequency & Transmission).

Bulletin 91 Verbiage modified in the first note under “Operator Instruction for High Frequency” concerning the Frequency Control Desk. Operator “must” was changed to operator “may” consult with the T&S desk to confirm that no OOMs from that desk could be affecting frequency (Frequency).

Bulletin 92 TC#228 extending TC#112 regarding interrupted outages due to computer software program unable to execute procedure.

Security Alert Stage/ Threatcon/ Related issues

Security Threat Alert Yellow (Elevated) maintained through May.

EECP Occurrence None

Major Weather Related Power System Problems None

Major system Voltage problems

None OCN, Advisory, Alert, Emergency Notice and Major Disturbances

5/01 10:11-14:00 OCN issued for severe weather in Houston Area 5/08 15:58 thru 5/09 2:04 Alert issued for 69kV Amoco to Terminal Switch

5/11 15:00-21:00 OCN issued in the Houston Zone for severe weather

5/12 10:23-12:00 Transmission Alert for Allen Sw-Shilo Rd 138 line.


PAGE 10 OF 32

5/19 15:30-22:00 Alert-Post Contingency loading on West Levee Auto #2.

5/27 15:30-24:00 Alert issued for North McAllen-North Edinburg

Significant Communication Problems

5/2 Held 01:00 interval. CSC Constraint activated when it should not have .

5/4 07:45-08:30 Portal not functioning 5/11 Held 18:15 interval . OOME and significant Resource Plan Changes caused a bad offset calculation

Major Computer System Problems/Fixes None

Load Shed incidences None

Update on New Generation

None

Max / Min Temperature Max: 101.5˚F FW Min: 39.5˚F FW

New SPS & RAP’s

None.

Other None


PAGE 11 OF 32

Market Operation

Ancillary Services

ERCOT OPERATIONS MONTHLY REPORT – MAY 2004 Average Hourly Procurement by Ancillary Service

May 2004

0

100

200

300

400

500

600

700

800

900

1000

5/1

5/2

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

5/23

5/24

5/25

5/26

5/27

5/28

5/29

5/30

5/31

URS DRS RRS NSRS

M W

Average Hourly Procurement by Ancillary ServiceMay 2003 - May 2004

0

100

200

300

400

500

600

700

800

900

May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May

URS DRS RRS NSRS

M W

PAGE 12 OF 32

ERCOT OPERATIONS MONTHLY REPORT – MAY 2004 Average MCPC by Ancillary Service

May 2004

$0

$4

$8

$12

$16

$20

5/1

5/2

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

5/23

5/24

5/25

5/26

5/27

5/28

5/29

5/30

5/31

URS DRS RRS NSRS

$/M

W

Average MCPC by Ancillary ServiceMay 2003 - May 2004

$0

$3

$6

$9

$12

$15

$18


URS DRS RRS NSRS

$/M

W

PAGE 13 OF 32

ERCOT OPERATIONS MONTHLY REPORT – MAY 2004 Average Deployment by Ancillary Service

May 2004

0

20

40

60

80

100

120

140

160

180

200

220

2405/

1

5/2

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

5/23

5/24

5/25

5/26

5/27

5/28

5/29

5/30

5/31

URS DRS RRS NSRS

M W

Average Deployment by Ancillary ServiceMay 2003 - May 2004

0

20

40

60

80

100

120

140

160

180

200


URS DRS RRS NSRS

M W

PAGE 14 OF 32


PAGE 15 OF 32

Balancing Energy

Average Balancing Energy Deployed


0

100

200

300

400

500

600

700

800

900

1000

5/1

5/2

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

5/23

5/24

5/25

5/26

5/27

5/28

5/29

5/30

5/31

UBES_H UBES_N UBES_SUBES_W UBES_NE

M W

Average UBES Deployment in Five ZonesMay 2004

0

100

200

300

400

500

600

700

800

5/1

5/2

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

5/23

5/24

5/25

5/26

5/27

5/28

5/29

5/30

5/31

DBES_H DBES_N DBES_SDBES_W DBES_NE

Average DBES Deployment in Five ZonesMay 2004

MW

PAGE 16 OF 32


0

100

200

300

400

500

600

700

800

900

1000


UBES_H UBES_N UBES_SUBES_W UBES_NE

UBES Deployment: Rolling 12 Month RecordsMay 2003 - May 2004

MW

0

100

200

300

400

500

600

700


DBES_H DBES_N DBES_SDBES_W DBES_NE

DBES Deployment: Rolling 12 Month RecordsMay 2003 - May 2004

MW

PAGE 17 OF 32


PAGE 18 OF 32

Balancing Energy

% of Total ERCOT Energy Requirement


0%

1%

2%

3%

4%

5%

6%

7%5/

1

5/2

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

5/23

5/24

5/25

5/26

5/27

5/28

5/29

5/30

5/31

UBES % DBES %

Average BES Deployed: as A Percentage of Total Energy RequirementMay 2004

0%

1%

2%

3%

4%

5%

May-03 Jun-03 Jul-03 Aug-03 Sep-03 Oct-03 Nov-03 Dec-03 Jan-04 Feb-04 Mar-04 Apr-04 May-04

UBES DBES

Average BES Deployed: as A Percentage of Total Energy RequirementMay 2003 - May 2004

PAGE 19 OF 32


PAGE 20 OF 32

Balancing Energy

Average MCPE


0

10

20

30

40

50

60

705/

1

5/2

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

5/23

5/24

5/25

5/26

5/27

5/28

5/29

5/30

5/31

MCPE_H MCPE_N MCPE_SMCPE_W MCPE_NE

Average MCPE in Five ZonesMay 2004

$/M

Wh

10

20

30

40

50

60

70

80

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_S

MCPE_W MCPE_NE

Average MCPE at Each Interval for Five ZonesMay 2004

Interval

$/M

W

PAGE 21 OF 32


0

5

10

15

20

25

30

35

40

45

50


MCPE_H MCPE_N MCPE_SMCPE_W MCPE_NE

MCPE: Rolling 12 Month RecordsMay 2003 - May 2004

$/M

W

Trend of Average Fuel Index

0

1

2

3

4

5

6

7

May-03 Jun-03 Jul-03 Aug-03 Aug-03 Sep-03 Oct-03 Nov-03 Dec-03 Dec-03 Jan-04 Feb-04 Mar-04 Apr-04 May-04PAGE 22 OF 32


PAGE 23 OF 32

Balancing Energy

Average Shadow Price


0

2

4

6

8

10

12

14

16

18

20

225/

1

5/2

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

5/23

5/24

5/25

5/26

5/27

5/28

5/29

5/30

5/31

NE NH SH SN WN

Average Shadow Price May 2004

$/M

W

PAGE 24 OF 32

0

1

2

3

4

5

6

7

8

9

10


NE NH SH SN WN

$/M

W

Average Shadow Price May 2003 - May 2004


PAGE 25 OF 32

Cost Summary


$-

$0.2

$0.4

$0.6

$0.8

$1.0

$1.2

$1.4

$1.6

5/1

5/2

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

5/23

5/24

5/25

5/26

5/27

5/28

5/29

5/30

5/31

Total: $27.47

Mill

ions

$

DRS URS RRS NSRS

Ancillary Service Capacity CostMay 2004

$(0.3)

$(0.2)

$(0.1)

$-

$0.1

$0.2

$0.3

$0.4

$0.5

$0.6

5/1

5/2

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

5/23

5/24

5/25

5/26

5/27

5/28

5/29

5/30

5/31

(Total w DRS: $ 1.90 Total w/o DRS: $5.47)

Mill

ion

$

DRS URS RRS NSRS

Ancillary Service Deployment CostMay 2004

PAGE 26 OF 32 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 – MAY 2004 Estimated OOMC Cost At Final Settlement

May 2004

0.0

0.1

0.1

0.2

0.2

0.3

0.3

0.4

0.4

0.55/

1

5/2

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

5/23

5/24

5/25

5/26

5/27

5/28

5/29

5/30

5/31

Start-Up Payment (Total: $2.04 Million)Total OOMC Payment (Total: $6.11 Million)

Mill

ion

$

Note:

All OOMC’d units are paid Generic Start-Up Cost and Generic Operational Cost in Initial Settlement. The Start-Up payment for some units will be taken back in Final Settlement if those units did not have an actual startup.

OOMC Cost provided in this chart is an estimation because of the potential of disputes before Final Settlement. This chart will be updated after Final Settlement is completed.

PAGE 27 OF 32


PAGE 28 OF 32

0.0

0.1

0.2

0.3

0.4

0.5

0.65/

15/

25/

35/

45/

55/

65/

75/

85/

95/

105/

115/

125/

135/

145/

155/

165/

175/

185/

195/

205/

215/

225/

235/

245/

255/

265/

275/

285/

295/

305/

31

Total 6.10 Million

Local Congestion CostMay 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


-1.0

-0.5

0.0

0.5

1.0

1.55/

1

5/2

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

5/23

5/24

5/25

5/26

5/27

5/28

5/29

5/30

5/31

Energy Stand ByStart Up BENA Credit

RMR Cost (Initial Settlement) May 2004

Mill

ion

$

PAGE 29 OF 32

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

5/1

5/2

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

5/23

5/24

5/25

5/26

5/27

5/28

5/29

5/30

5/31

Mill

ions

$

Net Cost $10.49

RMR Net Cost (Initial Settlement) May 2004


PAGE 30 OF 32

-15

-10

-5

0

5

10

15

20

25

Jan-

04

Feb-

04

Mar

-04

Apr

-04

Mill

ion

$

RMR Payments BENA Credit RMR Net Costs

Verified Actual RMR Cost (Final Settlement)

RMR Net Cost: $ 37.60

Note: 1. Trade dates 1/1/04 thru 4/24/04 complete with Final Resettlement data, using verifiable actual cost data provided by

the RMR Unit owner. 2. Trade date 4/25/04 thru 5/31/04 complete with Initial Resettlement data, using estimated eligible costs.


-2

-1

0

1

2

3

4

55/

1/04

5/2/

04

5/3/

04

5/4/

04

5/5/

04

5/6/

04

5/7/

04

5/8/

04

5/9/

04

5/10

/04

5/11

/04

5/12

/04

5/13

/04

5/14

/04

5/15

/04

5/16

/04

5/17

/04

5/18

/04

5/19

/04

5/20

/04

5/21

/04

5/22

/04

5/23

/04

5/24

/04

5/25

/04

5/26

/04

5/27

/04

5/28

/04

5/29

/04

5/30

/04

5/31

/04

Mill

ions

$

DBES UBES LBES/OOMEOOMC RMR A/S

Cost Summary(Total w DBES: $ 72.12 Total w/o DBES: $ 87.88)

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.

PAGE 31 OF 32


PAGE 32 OF 32

Please contact Shuye Teng at 512-248-3998 or email at [email protected] should you have any questions.

mailto:[email protected]

operations monthly report (may 2003) · marion - hill country/skyline cibolo - schertz 2 kirkland...

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