1. Market Trials Real Time Market / LFC
Weekly Update
February 05, 2010 1

2. 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. 2

3. Agenda Antitrust Admonition Real Time Market / LFC Call Overview
Scope of call
Standing agenda items
Environment Report
Planned / unplanned outages
Known Issues
Changes to supported hours
FAQ
Standing Reports and Updates
General reminders / updates
Readiness outreach update
Qualification update
Qualification Status
Phase 3 RTM / LFC Update
Question and Answers / General Discussion
ERCOT asks that Market Participants log into the WebEx session using their company name and then their name. This will allow ERCOT to take roll-call offline 3

4. QSE Qualification Call Overview: Market Trials 2010 Roadmap4

5. Real Time Market Call Overview
Scope of Call
This call will remain focused on the Real Time Market and LFC
Telemetry
SCED RT LMPs
LFC Testing
Intended audience of call are QSEs with Resources
Standing Agenda
Environment Report
Planned / unplanned outages
Known Issues
Changes to supported hours
FAQ
Standing Reports and Updates
General reminders / updates
Readiness outreach update
Qualification update
Phase 3 RTM / LFC Update 5

6. Day-to-day operations summary: Planned / Unplanned Outages of EDS
Planned Outages (note that these are occurring outside of the supported windows and this is FYI only)
2/5/2010 – CIM Load. This will apply data “as-of” 1/20/2010
2/5/2010 – 2/7/2010 – Release scheduled to address several known issues (to be updated next week on the known issues list)
Unplanned Outages
01/29/10 – 02/02/ :55 P.M – P.M
OS was offline during this period to address a security vulnerability
2/3/2010 – 2/4/2010 – A release to address a security vulnerability impacted MPs using a .NET client to connect to the ERCOT External Web Services interface. ERCOT has identified a work around for these MPs: Do not digitally sign the entire message. Rather, only sign the message body. This is a configuration in .NET. If there are questions, contact Note that this release is a stop gap until we receive a permanent fix from the vendor. 6

7. Environment Report: Known Issues
ERCOT will post known issues every Friday to the readiness center at:
Note that known issues will be posted to each functional area going forward (e.g. RTM / LFC issues will post to the RTM / LFC section of the readiness center)
<review known issues spreadsheet> 7

8. Known Issues
ERCOT has stubbed-in verifiable cost data and some of it is not reasonable. We will update the data to ensure that all verifiable costs are greater than the resource category generic costs
Will be completed during this weekend’s migration. Report any issues on Monday to
If your TPO exceeds the verifiable costs for the resource, you will get an ‘exceeds RESOURCE-SPECIFIC cost cap’ error vs. a ‘exceeds GENERIC cost cap’ error. 8

9. Environment Report: Changes to Supported Hours
The Nodal Production environment is still considered a test environment, consequently it will be necessary to bring the environment down periodically to perform maintenance and patch releases to the software
The following bullets details the supported days and hours ERCOT is actively supporting and monitoring the environment
The Nodal Production environment will remain accessible outside of these support windows, however there is no guarantee of system stability or accessibility
February 2010
ALL SYSTEMS: Monday through Friday from 8:00 am to 6:00 pm
March 2010
CRR, Outage Scheduler, MMS (as it related to market submissions): Monday through Friday from 8:00 am to 6:00 pm
Telemetry / EMS, SCED: 24x7 9

10. Standing reports and updates: General Reminders / Updates
WMS Approved Verifiable Cost Submission Timelines:
Simple Cycle Greater than 90MW June 30, 2009
Simple Cycle Less than or Equal to 90MW July 31, 2009
Gas Steam Non-Reheat Boiler Aug 31, 2009
Gas Steam Reheat Boiler Sep 30, 2009
Gas Steam Super Critical Boiler Oct 31, 2009
Combined Cycle Less than or Equal to 90MW Nov 30, 2009
Combined Cycle Greater than 90MW Dec 31, 2009
Coal, Lignite Jan 31, 2010
Nuclear, Hydro and Renewable Feb 28, 2010
Reciprocating Engines Feb 28, 2010
This course is designed to provide key operations information for Qualified Scheduling Entities representing Power Generating Companies including generation operation personnel from cooperatives and municipalities and ERCOt Operators. The course is intended for Market Participant personnel who are part of the Day-Ahead Operations of QSEs with generation Resources including day-ahead schedulers, dispatchers and controllers, their support operations engineers, IT staff, and others. The course should be attended in person by operations personnel involved in day-ahead planning and scheduling. 10

11. Standing reports and updates: General Reminders / Updates
FIP/FOP
Fuel Index Price for next week will be $5.27
Fuel Oil Price will remain $9.00
Settlement points and Short Names have been updated
This update includes removed and renamed resource nodes
We have included a tab on the settlement point excel file which details these changes
As part of the 3.0 release Alerts and Notifications were implemented
MPs will now see alert and notifications coming out of EMS and MMS
Handbooks for Phase 4 will be published to the market on 2/15/2010

12. Special Topic Web Services Update for Nodal Market Trials
Real Time Market / LFC Market Call
Feb 5, 2010

13. Schedule for consideration of changes
Planned timeline for changes to EIS Specifications 1.19i
Feb 2nd - NATF High-Level Overview of planned webservice changes
Feb 15th - Release EIS 1.19i Specifications (redlined) & planned release timelines
New External Interface Specification 1.19i and Associated XSDs Available to the Market Participants
Planned delivery timeline for Market Trials Phase 4 and 5 delivery
Feb 19th - Special NATF meeting to review changes to specifications
Phase 4 / Late-March 2010 – Planned release to nProd/Market-facing environment (market notice)
Phase 5 / May 2010 – Next planned nProd release

14. Scope of forthcoming changes
Change - Get Reports API
The existing “get Reports” API does not allow a market participant to constrain the results to a single Report ID or more specific time interval.
This change will allow a report Id to be submitted as well as more flexible time interval filtering. The resulting API will closely mirror the Retail Version of this API.
Note there may be performance issues with current design
Change - Startup / Shutdown Instructions Schema
Today, the hour ending is defined as an integer. This must be changed to string to allow the API to better represent DST (repeating hours using the * convention found elsewhere in the API for DST).
Change - Dynamic Ratings API
Today, this API assumes hourly reporting, which will result in a report of unmanageable size (currently disabled).
This change will allow indication of Real-time in the API, which will facilitate reporting at 15 minute intervals.
Change - Updated alert CM-ENGYTRD-NOTF to CM-ENGTRD-NOTF
Align with MMS native notification
New – Alerts
Addition of DAM-DSRLDTEL-NOTF Alert (DSR Load Telemetry is lost for more than 15 mins)
Addition of WRUC-COMP-NOTF Alert (WRUC completion)
Remove – DC Tie Schedule
Pending NPRR200 approval in February to remove requirement for schedule submission
Functionality to be disabled only, will not be removed from spec or XSD
Change- Ancillary Service values
Change from “Float” to “Decimal” values to avoid scientific notation (eg, 1.6E01)

15. Scope of forthcoming changes (continued)
Change - Cancel Outage API with ability to include notes
The existing “cancel OutageSet” API will be extended to allow the market participant to include RequestorNotes, SupportingNotes, and RASPSNotes in the request Payload. These elements will not be required.
The API will still support “cancel OutageSet” without notes.
The Market Manager UI will also support with and without notes.
New - Get Notifications API
This will be a new API available to the market but not required for consumption. It will provide a market participant with the ability to query for Bid, Resource Parameter, and VDI acceptance and rejection notifications.
The API will support such features as querying by MRID, by time range, and by status (acceptance / rejection). The API will be constrained to a minimal amount of historical data availability.
The API / feature set will be available via the machine-to-machine API and Market Manager UI.
Opportunity Outage API
Explanation:
The existing Opportunity Outage API is undergoing an exercise to simplify its usage and the business logic behind it.
The deltas are not yet known but are expected to firm up over February and March 2010.
Once solidified, the impact will be communicated to the market.

16. Scope of forthcoming changes (continued)
Other Documentation Updates
Combined Cycle Clarification - Minor documentation change to clarify a recurring question about when including a combined cycle name is necessary and when it is not applicable
Cancel by Continuous Hour - Minor documentation change to more clearly explain how cancel by continuous hour will work and how hours are interpreted by the Market System, including DST considerations.
SPPs, LMPs examples updated to remove TmPoint in example xml
Text Reason - updated description to correct discrepancies.
Appendix F – Updated the examples and added one for every bid type.
Various Locations – updated the BidSet tables to refer to Figure 11 for supporting ASTypes
Throughout the document, example XML snippets will be updated.

17. Timeline for changes to EIS Specifications 1.19i
Next steps
Timeline for changes to EIS Specifications 1.19i
Feb 2nd - NATF High-Level Overview of planned webservice changes
Feb 15th - Release EIS 1.19i Specifications (redlined) & planned release timelines
New External Interface Specification 1.19i and Associated XSDs Available to the Market Participants
Planned delivery timeline for Market Trials Phase 4 and 5 delivery
Feb 19th - Special NATF meeting to review changes to specifications
Phase 4 / Late-March 2010 – Planned release to nProd/Market-facing environment (market notice)
Phase 5 / May 2010 – Next planned nProd release

18. Outreach Program Overview
Confirmed Scheduled Site Visits
EON (February 9th)
Wind Panel (February 16th): Hosted by Horizon Wind
Retail Panel (February 17th): Hosted by StarTex
Tri-Eagle Energy (February 18th)
NEXTera (February 26th)
XTEND Energy (March 3rd)
Brazos (March 10th)
Shell (March 11th)
5 February 2010
Market Call

19. Outreach Program Overview
Market Participant “Menu” Topics:
All materials are available on the Nodal Readiness Center. (
Nodal Program Update (mandatory) – (75 min)
Readiness Center and Readiness Scorecard – (45 min)
Day-Ahead Market Implementation – (60 min)
Congestion Revenue Rights (CRR) Auction Implementation – (60 min)
Reliability Unit Commitment Implementation – (60 min)
Telemetry & Load Frequency Control (LFC) – (30 min)
Real Time Market Processes & Systems – (60 min)
Nodal Settlement and Billing Processes – (60 min)
Reports and Data Extracts – (30 min)
5 February 2010
Market Call

20. Outreach Program Overview
Any questions please contact Nodal Outreach at
5 February 2010
Market Call

21. Outreach Program Overview
Outreach Site Visits continue through March 2010
Confirmed Completed
Entity
Date
LOWER COLORADO RIVER AUTHORITY
9-Oct
CALPINE CORP
14-Oct
AUSTIN ENERGY
20-Oct
CITY OF GARLAND
21-Oct
GDF SUEZ ENERGY MARKETING
29-Oct
ANP FUNDING
3-Nov
LUMINANT ENERGY
5-Nov
INVENERGY WIND DEVELOPMENT
10-Nov
EXELON
11-Nov
AMERICAN ELECTRIC POWER SERVICE
12-Nov
CONSTELLATION ENERGY
17-Nov
PSEG ENERGY RESOURCES
18-Nov
J ARON
19-Nov
FULCRUM POWER
2-Dec
EAGLE ENERGY PARTNERS I LP
3-Dec
STEC
9-Dec
BP ENERGY COMPANY
10-Dec
Entity
Date
NRG TEXAS POWER
15-Dec
DIRECT ENERGY LP
5-Jan
CPS ENERGY
6-Jan
BTU (Bryan Texas Utilities) SERVICES
13-Jan
DIRECT ENERGY
14-Jan
APX
19-Jan
OCCIDENTAL
20-Jan
TENASKA POWER SERVICES
26-Jan
OPTIM ENERGY
27-Jan
E.ON
9-Feb
WIND PANEL (Houston)
16-Feb
RETAIL PANEL (Houston)
17-Feb
TRI-EAGLE ENERGY
18-Feb
NEXTEra
26-Feb
XTEND ENERGY LP
3-Mar
TOPAZ POWER MANAGEMENT
4-Mar
BRAZOS ELECTRIC
10-Mar
SHELL ENERGY
11-Mar
FORMOSA UTILITY VENTURE
16-Mar
Westar
18-Mar
5 February 2010
Market Call

22. 73 QUALIFIED representing 94% of the generation
Qualification Update
QSEs with Resources
82 TOTAL (note that this has decreased from 113 as 31 QSEs no longer represent generation and do not plan to do so before nodal)
73 QUALIFIED representing 94% of the generation
9 QSEs with Resource remain to be qualified
QSE without Resources
205 TOTAL (note that this includes both, the 31 mentioned previous minus 6 that will drop out of ERCOT altogether post go live)
149 QUALIFIED
56 QSEs without Resources remain to be qualified
GREAT JOB!

23. Real Time Market / LFC Update
4/21/2017

24. Real Time Market / LFC Update
SCED Week 1
Observed a known issue with SCED and turned off Mitigation between Step 1 and Step 2 of SCED execution
This caused LMPs to be stuck at ~$5 on Tuesday
Note that this will be resolved in tomorrow’s release
In general, SCED is behaving as expected given offer curves and telemetry in place
SCED LMPs hit the ceiling of $2250 for much of the time in the early part of the week
Once offer curve submittals increased, we began seeing prices bounce between “reasonable” and $2250 (running out of offer curves)
Towards week’s end offer curves increase where we saw spikes in LMPs during peak demand times only (with a few exceptions)
SCED Week 2
We will continue our outreach on the offer curve submittals and the telemetry outreach
QSEs need to also closely monitor both of these fronts
ERCOT will begin posting the Offer Curve dashboard next week so that QSEs can verify they are compliant with their submittals
Next Friday’s call will include a more detailed look at the issues and LMP trending over the week

25. Nodal Telemetry Outreach Update
QSE Telemetry Dashboard
The QSE Telemetry Dashboard was refreshed on the Readiness Center Feb 1
Current statistics indicate that 241 points remain to be completed:
23 points remain for State Estimator (~99% completion)
218 points remain for SCED (~96% completion)
141 of the remaining points result from ERCOT activity:
92 points are being requested for Raise Block Status (RBST) and Lower Block Status (LBST) points not included in previous telemetry-outreach requests
The remainder are being requested for various reasons
TSP Dashboard
The TSP Telemetry Dashboard is still being reviewed for completeness and accuracy—it is currently scheduled to post by FEB 12
ERCOT will be ramping up telemetry outreach with TSPs to include ~700 additional status points

26. Nodal Telemetry Outreach Update
ICCP points for CLRs/LRs
On FEB 3, ERCOT began the telemetry outreach to resolve nodal ICCP points with QSEs that have Controllable/Non-Controllable Load Resources
ERCOT is currently working with 5 QSEs to resolve ~560 ICCP points
LFC Notes
Individual QSE tests for LFC begin MAR 1
Details describing the Individual QSE tests will be provided in the upcoming updates to the Real-Time Market/LFC Market Trials Handbook
ERCOT plans to host a focused LFC call at the end of February to set expectations with the Market and to answer questions
Please contact with any feedback or questions you would like to have incorporated into the focused LFC call

27. Nodal Telemetry Outreach Update
Upcoming Dates
QSEs submitting ICCP Service Requests (SRs) by FEB 10 will have their updates reflected in the next Nodal Scorecard refreshment
ERCOT is requesting any QSEs that are currently completing ICCP updates to submit their ICCP SRs by FEB 15 to make the early March deployment to nodal production
Individual QSE tests for LFC begin MAR 1

28. State Estimator Daily Statistics * DATE Convergence %
Nodal Telemetry Outreach Update
State Estimator
Daily Statistics *
DATE
Convergence %
24-Jan
95.5
25-Jan
87.85
26-Jan
86.87
27-Jan
89.12
28-Jan
97.19
29-Jan
95.89
30-Jan
100
31-Jan
1-Feb
80.69
2-Feb
97.32
3-Feb
35.2
* These convergence percentages do not include Solved with Mismatch solutions

29. Q&A
Q&A / Open Forum

30. Appendix

31. URLS and EMAIL ADDRESS FOR SUPPORT
URLs for access the Nodal Production systems
MIS:
Market Manager: Click the ‘Applications’ tab in the upper menu. Link is in the ERCOT Applications portlet
CRR: Click the ‘Markets’ Link in the upper menu. Click CRR in the Market sub menu
EWS:
Reminder: Market Trials address change: ERCOT asks that MPs use the address for questions from this point forward
This will begin the phasing out of and addresses.
A centralized address will no longer require MPs to “guess” which address to use for their questions
We have implemented a more effective method of routing and responding to s using this address
The old eds s can continue to be used until 2009 hold over efforts are completed (such as telemetry outreach)

32. Market Trials Handbooks
ERCOT will release the following Handbooks In December
Real Time Market / LFC covering Phase
Outage Scheduler covering Phase
CRR covering release Phase
Settlements / COMs covering Phase
Day Ahead Market (note that this contains only reference data to the 2.1 qualification as there is no Phase 3.0 scope)
The Phase 4.0 release of the Market Trials Handbooks will occur in early February.
The Phase 5.0 release of the Market Trials Handbooks will occur in March

33. Verifiable Cost Submission (originally presented on 4/17)
WMS Approved Verifiable Cost Submission Timelines:
Simple Cycle Greater than 90MW June 30, 2009
Simple Cycle Less than or Equal to 90MW July 31, 2009
Gas Steam Non-Reheat Boiler Aug 31, 2009
Gas Steam Reheat Boiler Sep 30, 2009
Gas Steam Super Critical Boiler Oct 31, 2009
Combined Cycle Less than or Equal to 90MW Nov 30, 2009
Combined Cycle Greater than 90MW Dec 31, 2009
Coal, Lignite Jan 31, 2010
Nuclear, Hydro and Renewable Feb 28, 2010
Reciprocating Engines Feb 28, 2010
This course is designed to provide key operations information for Qualified Scheduling Entities representing Power Generating Companies including generation operation personnel from cooperatives and municipalities and ERCOt Operators. The course is intended for Market Participant personnel who are part of the Day-Ahead Operations of QSEs with generation Resources including day-ahead schedulers, dispatchers and controllers, their support operations engineers, IT staff, and others. The course should be attended in person by operations personnel involved in day-ahead planning and scheduling. 33