1. Resource Asset Registration Form Version 5.0 / 5.1 Changes for WGRs QMWG Presentation - July 9, 2012

2. 2 RARF Version 5.0 / 5.1 - WebEx WebEx to discuss RARF Version 5.0 / 5.1 release ERCOT will hold a WebEx on Thursday, July 12, 2012, from 14:00 to 16:00 CPT to help familiarize Resource Entities (REs) with the Resource Asset Registration Form (RARF) version 5.1 Date: Thursday, July 12, 2012 Time: 14:00 – 16:00 CPT (Chicago, GMT-05:00) WebEx URL: https://ercot.webex.com/ercot/j.php?ED=202253792&UID=0& PW=NNzgwYjhjZGU4&RT=MiM3https://ercot.webex.com/ercot/j.php?ED=202253792&UID=0& PW=NNzgwYjhjZGU4&RT=MiM3 Meeting Number: 655 194 994 Meeting Password: Ercot123! Dial-in Number: 1-877-668-4493 Press # when prompted for pin number. March 15, 2012

3. 3 RARF Version 5 - two Phases Phase I – March 21, 2012 – RARF Version 5.0 –Transposed the RARF form – resources are in rows –Phase I - Separated RARF into forms for Generation, Wind, Combined Cycle, Transmission, and Load Resources - separate forms to eventually allow partial submission (but not yet). –Added new fields (Business Rules for new fields were not active) March 15, 2012

4. 4 What Changed in RARF Version 5.0/5.1? Phase II – June 26, 2012 – RARF Version 5.1 –Activated the business rules on new fields (non-binding until October 1, 2012.) –Added the AGR tab to the Gen_Form_Pivoted.xls for NPRR437 - Allow Aggregation of Multiple Generators Into A Single Resource For Market and Engineering Modeling –Separated out “General and Site Information”, “GEN Load Split - ESIID”, “Private Network – Site” tabs“ into General_Site_ESIID Information.xls”. March 15, 2012

5. 5 RARF Version 5.0 / 5.1 Phase Timing Pre-populated, forms were sent to each Resource Entity on June 29, 2012. No immediate action is required. RARF Version 5.1 validation rules on new fields became effective, but are non-binding until October 1, 2012. RARF Audit Reports reflect errors and warnings associated with all the new required data fields. To the extent possible, existing RARF data was pre-populated (except PUN Load Data, One-Lines, Transformer Test Data, Stability Study Model, PSCAD Model, Dynamic Data, Collector System – WIND, Collector System-Wind Seg Data and new data fields that were completed in advance.) REs are required to submit a completed RARF version 5.1 including all new data fields by October 1, 2012. March 15, 2012

6. 6 RARF Version 5.0/5.1 – Examples of New Fields – Wind_Form_Pivoted.xls Unit Info – Wind tab: Non_Modeled Generator (Y or N) Transmission Only Date (POI) [Optional, required for addition of the generation site transmission equipment on a earlier Network Operations Model MRD than the resource] Standard Generation Interconnection Agreement (SGIA) Signature Date Unit Start Date (Model Ready Date) [Optional, required for new resource to be added to the Network Operations Model] POI – Sub-Station Code/Sub-Station Mnemonic POI - Voltage Level POI - PTI Bus Number Governor Droop Setting Governor Dead-band NATFJanuary 4, 2011

7. 7 RARF Version 5.0/5.1 – Examples of New Fields – Wind_Form_Pivoted.xls Unit Info – Wind tab (continued): Design Max Ambient Temperature Design Min Ambient Temperature Height of Meteorological Instrumentation - Wind Speed Height of Meteorological Instrumentation - Wind Direction Height of Meteorological Instrumentation - Barometric Pressure Height of Meteorological Instrumentation – Temperature Ownership – Wind tab: Ownership Start Date Ownership Stop Date Parameters – Wind tab: Unit De-rating Values (0 – 120 degrees F) NATFJanuary 4, 2011

8. 8 RARF Version 5.0/5.1 – Examples of New Fields – Wind_Form_Pivoted.xls Reactive Capability – WIND tab (continued): Reactive Capability Data Provided Below Is Gross Values? (Gross is required). Reactive Capability Data Provided is from NDCRC Test Data? If Reactive Capability Data Provided Is From NDCRC test Data Then Enter The Date On Which The Test Was Performed. Planning – Wind tab: Positive Sequence Z (unsaturated) Negative Sequence Z (unsaturated) Zero Sequence Z (unsaturated) Direct Axis Sub-transient Reactance, X"dv (saturated) Direct Axis Transient Reactance, X'dv (saturated) Zero Sequence Grounding Resistance For An Impedance Grounded Generator In P.U. (100 Mva Base) Zero Sequence Grounding Reactance For An Impedance Grounded Generator In P.U. (100 Mva Base) NATFJanuary 4, 2011

9. 9 RARF Version 5.0/5.1 – Examples of New Fields – Wind_Form_Pivoted.xls Planning – Wind tab (continued): Average Amount Of Auxiliary Real Power (and characteristics) Average Amount Of Auxiliary Reactive Power (and characteristics) Auxiliary Load Power Factor TURBINE STEP-UP TRANSFORMER DATA –High Side Voltage Level (nominal) –Low Side Voltage Level (nominal) –High Side Voltage Connection –Low Side Voltage Connection –Impedance Z –X/R Ratio –Zero Sequence Z –Zero Sequence X/R Ratio –Base Mva For Transformer Data NATFJanuary 4, 2011

10. 10 RARF Version 5.0/5.1 – Examples of New Fields – Wind_Form_Pivoted.xls Collector System - WIND tab: COLLECTION SYSTEM ONE LINE DIAGRAM (Embed a PDF One Line Diagram) COLLECTION SYSTEM DETAILED MODEL (Embed a PSS/e Raw Data or Powerworld Model) COLLECTION SYSTEM DETAILED MODEL –Cable Type –Voltage Level kV –POSITIVE SEQUENCE DATA R/Kft X/Kft Charging Bc/Kft –ZERO SEQUENCE DATA R0/Kft X0/Kft NATFJanuary 4, 2011

11. 11 RARF Version 5.0/5.1 – Examples of New Fields – Wind_Form_Pivoted.xls Collector System-Wind Seg Data tab: Cable Type WIND SEGMENT DETAILS –From –To –Circuit Number –Voltage Level –Cable Segment Length –Number of Turbines On Cable Segment Stability Study Model tab – embed any executable code models PSCAD Model (if applicable) tab Dynamic Data tab – embed any PDF diagrams, csv files and tabular data NATFJanuary 4, 2011

12. 12 Questions March 15, 2012