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Nodal Stabilization Market Call

December 06, 2010 10:30 AM

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Antitrust Admonition

ANTITRUST ADMONITION

ERCOT strictly prohibits Market Participants and their employees who are participating in ERCOT activities from using their participation in ERCOT activities as a forum for engaging in practices or communications that violate the antitrust laws. The ERCOT Board has approved guidelines for members of ERCOT Committees, Subcommittees and Working Groups to be reviewed and followed by each Market Participant attending ERCOT meetings. If you have not received a copy of these Guidelines, copies are available at the Client Relations desk. Please remember your ongoing obligation to comply with all applicable laws, including the antitrust laws.

DISCLAIMER

All presentations and materials submitted by Market Participants or any other Entity to ERCOT staff for this meeting are received and posted with the acknowledgement that the information will be considered public in accordance with the ERCOT Websites Content Management Operating Procedure.

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General Updates / Reminders

General Reminders / Updates

• Based on feedback, ERCOT will continue daily Market Calls through the end of December– Daily calls will be held once / daily at 4:30 PM Monday through

Thursday starting on 12/8– Friday calls will continue to be held at 9:00 AM– No calls will be scheduled on the weekend– ERCOT will hold the last 10:30 AM market call on Tuesday 12/7– These calls will be focused on issues and MP questions (detailed

market analysis will no longer be on the agenda starting on 12/8)– ERCOT.com Calendar to be updated with meeting information

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General Reminders / Updates

Weekend Issues• 48 hour Disclosure Reports were posted late due to significantly

long run times– Friday, December 3rd – Saturday, December 4th – Both days of postings were available for download on Saturday,

December 4th

• Some 48 hour Disclosure Reports first run dates required by Protocols will be delayed until late December

• Both lists are available at the end of this presentation

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Day Ahead Market

DAM Operating Day December 4

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DAM Operating Day December 4

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This is the net additional usage of transmission capacity by CRR/PTPs.

DAM Operating Day December 4

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DAM Operating Day December 4

• Top 5 unique binding constraints (based on shadow price)

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DAM Operating Day December 5

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DAM Operating Day December 5

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DAM Operating Day December 5

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DAM Operating Day December 5

• Top 5 unique binding constraints (based on shadow price)

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DAM Operating Day December 6

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DAM Operating Day December 6

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DAM Operating Day December 6

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DAM Operating Day December 6

• Top 5 unique binding constraints (based on shadow price)

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Price Correction for DAM Operating Day Dec 4

• Price Validation Tool identified issue with DAM SPPs on OD Dec 4th for 2 resource nodes:– Root cause identified– Gap in shift factors during price calculation only (post solution

process)– Program fix identified, with interim flagging of issue to identify issue

prior to publishing results• Communications

– Notification sent in MIS this morning– Corrected prices posted at

http://www.ercot.com/mktinfo/prices/pricecorrections/ – ERCOT will send broader market notice with detailed information

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Price Correction for DAM Operating Day Dec 4

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Price Correction for DAM Operating Day Dec 4

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Price Correction for DAM Operating Day Dec 4

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DELIVERY_DATE DELIVERY_HOUR STL_PNT_NAME Original_SPP Corrected_SPP

12/4/2010 18 CHE_LYD 32.37 32.49

12/4/2010 19 CHE_LYD 38.11 38.20

12/4/2010 20 CHE_LYD 35.36 35.59

12/4/2010 21 CHE_LYD 31.42 31.64

12/4/2010 22 CHE_LYD 31.04 32.05

12/4/2010 18 CHE_LYD2 32.37 32.49

12/4/2010 19 CHE_LYD2 38.11 38.20

12/4/2010 20 CHE_LYD2 35.36 35.59

12/4/2010 21 CHE_LYD2 31.42 31.64

12/4/2010 22 CHE_LYD2 31.04 32.05

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Real Time Market / LFC

Real Time Market Update

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Real Time Market Update

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Real Time Market Update

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Constraint Shadow Prices 2010-12-04

6437__C BASE CASE

BLESSI_LOLITA1_1 DSTPWHI5

NWF_NOTSW_1 BASE CASE

W_TO_N BASE CASE

NWF_NOTSW$50008:08 - 8:10

Real Time Market Update

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Real Time Market Update

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DRUC

Execution Time = 8 minutes

1 resource commitment

No resource de-commitment

2 unique binding constraints; no constraint violation

DI_DWHI8 : RINCON_WHITE_2_1 (HE1-6, HE8-18)

SGLDSUN8 : 6215__A (HE8)

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Average Execution time = 10 min (max = 19 min at 12/4 9:03:01 PM)

No resource commitment

No resource de-commitment

2 unique binding constraints; no constraint violation

DI_DWHI8 : RINCON_WHITE_2_1 (HE1-24)

SGLDSUN8 : 6215__A (HE3-8)

HRUC

Real Time Market Update

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Real Time Market Update

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Real Time Market Update

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Real Time Market Update

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Real Time Market Update

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• Execution Time = 6 minutes

• 1 resource manual commitment

• No resource de-commitment

• 4 unique binding/violated constraints

•SALAN_S8 : AIRLIN_CABANI1_1 binding (HE21-24)

•SFORGIL8 : GILLES_8AT1 binding (HE8)

•SGLDSUN8 : 6215__A binding (HE7-8)

•SNCWMOS8 : ODNTH_FMR1 binding (HE 7-9, 23)

violated (HE 10-16)

DRUC 12/5

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HRUC 12/5

• Average Execution time = 12 min (max = 19 min at 12/4/2010 9:03:01 PM)

• 6 resource commitments

• No resource de-commitment

•7 unique binding/violated constraints

• SALAN_S8 : AIRLIN_CABANI1_1

• SFORGIL8 : GILLES_8AT1

• SGLDSUN8 : 6215__A

• SNCWMOS8 : ODNTH_FMR1

• SPZGN8 : GT_MID90_A

• XMGS58 : MGSES_MR2H

• XMGS58 : MGSES_MR2L

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Settlements and Billing

Settlements and Billing

• Day-Ahead Market Settlement Statements & Invoice Posting Dates– DAM OD 12/01 posted on Friday 12/3– DAM OD 12/02 posted today Monday 12/6– DAM OD 12/03 – 12/05 will post tomorrow 12/7

• Reminder: QSE’s who intend to Shadow Settle must subscribe to extracts.

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Questions?

48 hour Disclosure Reports Now Available on MIS

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Item EMIL ID Report Name

1 NP3-954 2day_Tot_Clrd_Ene_Bids_Ene_Offers -01-DEC-10

2 NP3-960 2day_Self_Arranged_AS_RRSLOAD-01-DEC-10

3 NP3-960 2day_Self_Arranged_AS_RRSGEN-01-DEC-10

4 NP3-960 2day_Self_Arranged_AS_REGUP-01-DEC-10

5 NP3-960 2day_Self_Arranged_AS_REGDN-01-DEC-10

6 NP3-960 2day_Self_Arranged_AS_NSPIN-01-DEC-10

7 NP3-961 2day_RRSLOAD_Cleared_DAM_AS-01-DEC-10

8 NP3-961 2day_RRSGEN_Cleared_DAM_AS-01-DEC-10

9 NP3-961 2day_REGUP_Cleared_DAM_AS-01-DEC-10

10 NP3-961 2day_REGDN_Cleared_DAM_AS-01-DEC-10

11 NP3-961 2day_NSPIN_Cleared_DAM_AS-01-DEC-10

12 NP3-944 2day_Agg_Min_Energy_Supply_Curves -01-DEC-10

13 NP3-945 4 disclosure ares - 2day_Agg_Min_Energy_Supply_Curves-01-DEC-10

14 NP3-921 2day_Agg_Load_Summary-01-DEC-10

15 NP3-922 2day_Agg_DSR_Loads-01-DEC-10

16 NP3-959 2day_Agg_AS_Offers_RRSNC-01-DEC-10

17 NP3-959 2day_Agg_AS_Offers_RRSLD-01-DEC-10

18 NP3-959 2day_Agg_AS_Offers_RRSGN-01-DEC-10

19 NP3-959 2day_Agg_AS_Offers_REGUP-01-DEC-10

20 NP3-959 2day_Agg_AS_Offers_REGDN-01-DEC-10

48 hour Disclosure Reports first run dates required by Protocols will be delayed until late December 2010

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Item EMIL ID Report Name Protocol 1 NP3-955-EX 48-hour Total Cleared Energy Bids and Energy-Only Offers by Disclosure Areas NP3.2.5(3)(d) 2 NP3-962-EX 48-hour Point-to-Point Obligation Bids NP3.2.5(3)(h) 3 NP3-963-EX 48-hour Point-to-Point Obligation Bids by Disclosure Areas of Sinks NP3.2.5(3)(h) 4 NP3-918-EX 48-hour Aggregate Supply Curve for WGR NP3.2.5(1)(b) 5 NP3-927-EX 48-hour Aggregate Supply Curve for WGR by Disclosure Areas NP3.2.5(1)(b) 6 NP3-917-EX 48-hour Aggregate Supply Curve for Non-Wind Resources NP3.2.5(1)(a) 7 NP3-923-EX 48-hour Aggregate Supply Curve for Non-Wind Resources by Disclosure Areas NP3.2.5(1)(a) 8 NP3-919-EX 48-hour Aggregate Output Schedules NP3.2.5(1)(c) 9 NP3-931-EX 48-hour Aggregate Output Schedules by Disclosure Areas NP3.2.5(1)(c)

10 NP3-924-EX 48-hour Aggregate Load Summary by Disclosure Areas NP3.2.5(1)(e) 11 NP3-920-EX 48-hour Aggregate Generation Summary NP3.2.5(1)(d) 12 NP3-935-EX 48-hour Aggregate Generation Summary by Disclosure Areas NP3.2.5(1)(d) 13 NP3-939-EX 48-hour Aggregate Energy Supply Curves (3PSO & Energy Only Offers) NP3.2.5(3)(a) 14 NP3-940-EX 48-hour Aggregate Energy Supply Curves (3PSO & Energy Only Offers) by

Disclosure Areas NP3.2.5(3)(a)

15 NP3-949-EX 48-hour Aggregate Energy Demand Curve NP3.2.5(3)(c) 16 NP3-959-EX 48-hour Aggregate AS Offers NP3.2.5(3)(e)