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Texas Nodal Day-Ahead CRR Settlements Business Requirements TPTF Presentation ERCOT Settlements & Billing September 12, 2006. Agenda. Overview CRR Settlements Overview Structure of Day-Ahead CRR Settlements Business Requirements Requirements Sections

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Agenda

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  1. Texas NodalDay-Ahead CRR Settlements Business RequirementsTPTF PresentationERCOT Settlements & BillingSeptember 12, 2006 http://nodal.ercot.com 1

  2. Agenda • Overview • CRR Settlements Overview • Structure of Day-Ahead CRR Settlements Business Requirements • Requirements Sections • Highlights of Functional Requirements & Assumptions • Suggested NPRR’s http://nodal.ercot.com 2

  3. CRR Settlements Overview http://nodal.ercot.com 3

  4. Structure of Day-Ahead CRR Settlements DA CRR Charge Types http://nodal.ercot.com 4

  5. Level 1 & 2: Calculate CRR Prices DA CRR Charge Types http://nodal.ercot.com 5

  6. Minimum Resource Price for source Settlement Point-- Functional Requirements http://nodal.ercot.com 6

  7. Minimum Resource Price for source Settlement Point –Functional Requirements (cont’d.) This formula is not explicitly documented by Nodal Protocols. http://nodal.ercot.com 7

  8. Minimum Resource Price for source Settlement Point – Calculation Dependency Diagram http://nodal.ercot.com 8

  9. Maximum Resource Price for sink Settlement Point-- Functional Requirements http://nodal.ercot.com 9

  10. Maximum Resource Price for sink Settlement Point-- Functional Requirements (cont’d.) This formula is not explicitly documented by Nodal Protocols. http://nodal.ercot.com 10

  11. Maximum Resource Price for sink Settlement Point-- Calculation Dependency Diagram http://nodal.ercot.com 11

  12. Suggested NPRR 7.9.1.3 Minimum and Maximum Resource Prices (1) The following prices specified in paragraphs (2) and (3) below are used in CRR hedge value calculation for CRRs settled in the DAM and PTP Options settled in Real-Time. (2) Minimum Resource Prices of Resource Types located at source Settlement Points are: • (a) Nuclear = -$20.00/MWh; • (b) Hydro = -$20.00/MWh; • (c) Coal and Lignite = $0.00/MWh; • (d) Combined Cycle greater than 90 MW = FIP * 5 MMBtu/MWh; • (e) Combined Cycle less than or equal to 90 MW = FIP * 6 MMBtu/MWh; • (f) Gas -Steam Supercritical Boiler = FIP * 6.5 MMBtu/MWh; • (g) Gas Steam Reheat Boiler = FIP * 7.5 MMBtu/MWh; • (h) Gas Steam Non-reheat or boiler without air-preheater = FIP * 10.5 MMBtu/MWh; • (i) Simple Cycle greater than 90 MW = FIP * 10 MMBtu/MWh; • (j) Simple Cycle less than or equal to 90 MW = FIP * 11 MMBtu/MWh; • (k) Diesel = FIP * 12 MMBtu/MWh; • (l) Wind = -$35/MWh; • (m) RMR Resource = RMR contract price Energy Offer Curve at LSL; and • (n) Other Renewable = -$10. (3) Maximum Resource Prices of Resource Types located at sink Settlement Points are: • (a) Nuclear = $15.00/MWh; • (b) Hydro = $10.00/MWh; • (c) Coal and Lignite = $18.00/MWh; • (d) Combined Cycle greater than 90 MW = FIP * 9 MMBtu/MWh; • (e) Combined Cycle less than or equal to 90 MW = FIP * 10 MMBtu/MWh; • (f) Gas -Steam Supercritical Boiler = FIP * 10.5 MMBtu/MWh; • (g) Gas Steam Reheat Boiler = FIP * 11.5 MMBtu/MWh; • (h) Gas Steam Non-reheat or boiler without air-preheater = FIP * 14.5 MMBtu/MWh; • (i) Simple Cycle greater than 90 MW = FIP * 14 MMBtu/MWh; • (j) Simple Cycle less than or equal to 90 MW = FIP * 15 MMBtu/MWh; • (k) Diesel = FIP * 16 MMBtu/MWh; • (l) Wind = $0/MWh; • (m) RMR Resource = RMR contract price Energy Offer Curve at HSL; and • (n) Other Renewable = $0. Suggestion: Add words here to address the situation where multiple resources located at the source Settlement Point. Suggestion: Add words here to address the situation where multiple resources located at the sink Settlement Point. http://nodal.ercot.com 12

  13. Suggested NPRR (cont’d) Suggestion: Revise Protocol Definition in PR 7.9.1.1; PR7.9.1.2; PR7.9.1.4; PR7.9.1.5; PR7.9.1.6; PR7.9.2.2; PR7.9.2.3 http://nodal.ercot.com 13

  14. Day-Ahead Obligation Price http://nodal.ercot.com 14

  15. Obligation Deration Price http://nodal.ercot.com 15

  16. Obligation Hedge Value Price http://nodal.ercot.com 16

  17. Day-Ahead Option Price http://nodal.ercot.com 17

  18. Day-Ahead Option Informational Price --- MIS Posting Only http://nodal.ercot.com 18

  19. Option Deration Price http://nodal.ercot.com 19

  20. Option Hedge Value Price http://nodal.ercot.com 20

  21. Next Level: Charge Type Calculations DA CRR Charge Types http://nodal.ercot.com 21

  22. Payments and Charges for PTP Obligations in DAM-- Functional Requirements http://nodal.ercot.com 22

  23. Payments and Charges for PTP Obligations in DAM-- Functional Requirements (cont’d.) http://nodal.ercot.com 23

  24. Payments and Charges for PTP Obligations in DAM-- Functional Requirements (cont’d.) http://nodal.ercot.com 24

  25. Payments and Charges for PTP Obligations in DAM-- Calculation Dependency Diagram http://nodal.ercot.com 25

  26. Payments for PTP Options in DAM-- Highlights of Functional Requirements • Assumptions • Assumptions of upstream systems: • Determination of whether or not PTP Options owned by NOIE are eligible for Real-Time Settlements is made by the original source (MMS DAM). http://nodal.ercot.com 26

  27. Payments for PTP Options in DAM-- Calculation Dependency Diagram http://nodal.ercot.com 27

  28. Payments for FGRs in DAM--- Highlights of Functional Requirements Assumptions: Settlement methodology of payment for a new FGR when it’s not a competitive constraint will be specified upon the FGR introduction. http://nodal.ercot.com 28

  29. Payments for FGRs in DAM--- Highlights of Functional Requirements (cont’d.) • Assumptions: • McCamey Area WGR is the designated source of MCFRI unless specified otherwise by TPTF. http://nodal.ercot.com 29

  30. Payments for FGRs in DAM--- Calculation Dependency Diagram http://nodal.ercot.com 30

  31. Payments and Charges for PTP Obligations with Refund in DAM--- Highlights of Functional Requirements • NPRR Suggested: • Same variable (bill determinant) name for PTP Obligation price and PTP Obligation with Refund price as they are equivalent. DAOBLPR_<SRSP>_<SKSP> = DASPP_<SKSP> – DASPP_<SRSP> • Assumptions: • Calculation of Obligation with Refund Actual Usage (OBLRACT) as described in the formula below will be addressed by a separate set of Requirements: • OBLRACT o, (j, k)=((OBLROF o, r, (j, k) * RESACT r, (j, k), y) * TLMP y) / (TLMP y) * OBLRF o, (j, k) • Calculation of Resource Actual (RESACT) as described in the formula below will be addressed by a separate set of Requirements: • If (OS r, y exists) • RESACT r, (j, k), y = OS r, y • Otherwise • If (EBP r, y exists) • RESACT r, (j, k), y = EBP r, y • Otherwise • RESACT r, (j, k), y = BP r, y http://nodal.ercot.com 31

  32. Payments and Charges for PTP Obligations with Refund in DAM--- Calculation Dependency Diagram http://nodal.ercot.com 32

  33. Payments for PTP Options with Refund in DAM--- Highlights of Functional Requirements NPRR Suggested: Same variable (bill determinant) name for PTP Option price and PTP Option with Refund price as they are equivalent. DAOPTPR_<SRSP>_<SKSP> = Max( 0, DASPP_<SKSP> – DASPP_<SRSP>) http://nodal.ercot.com 33

  34. Payments for PTP Options with Refund in DAM--- Calculation Dependency Diagram http://nodal.ercot.com 34

  35. Summary • Nodal Protocols Section 7 • 005NPRR-05_BOD_Action_Report_071806 • Nodal Protocols Section 9 • 007NPRR-05_BOD_Action_Report_071806 • NPRR (xxxx) • [approved by TPTF and scheduled to be at the 9-21-06 PRS meeting] aimed to synchronize PRR640. http://nodal.ercot.com 35

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