http://nodal.ercot.com 1

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TPTF Update Trip Doggett
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Agenda
Item Description Purpose
1. Meeting Summary Summary of recent TPTF activities For review
2. Next Meetings Upcoming activities For review
3. Approval of Milestone Request TAC approval of Milestone Business Requirements Complete for CO Real-Time AS Settlements CO RUC Settlements CO DAM Make Whole Settlements For Vote

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Meeting Summary August 7

• Meetings August 7 8 and August 21, 22 23
• On August 7, we discussed
• Proposed changes to Principles of Consistency
  Document that were proposed by joint ROS/TPTF
  Task Force, including proposed definition for
  Annual Planning Model.
• Draft language to incorporate refined Annual
  Planning Model definition in Section 3.10.2(1).
• On August 7, after voting unanimously to waive
  notice for the vote, TPTF approved the refined
  Annual Planning Model definition in Section
  3.10.2(1) by a unanimous voice vote.
• On August 7, after voting unanimously to waive
  notice for the vote, TPTF approved the changes to
  the Principles of Consistency Document by a
  unanimous voice vote.
• Draft Nodal PRRs
• On August 7, TPTF approved a draft NPRR for
  changes to Sections 1, 6, and 10 to address net
  metering concerns in the nodal market. The draft
  Nodal PRR was approved by a ballot vote of 100
  in favor, with one abstention by CenterPoint
  Energy. The Cooperative and Independent
  Generator segments were not present. This draft
  NPRR will be sent to PRS.

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Meeting Summary August 7 (continued)

• On August 7, we discussed
• Draft Nodal PRRs
• Discussed a proposed NPRR from the ERCOT
  Modeling Group to clarify required tests of the
  Network Model.
• ERCOT agreed to meet with individuals having
  concerns with the document, offline, and
  circulate an updated version of the NPRR for
  consideration at our next meeting.
• ERCOT protocol clarifications
• Discussed the treatment of block Offers in the
  Market Management System and ERCOT agreed to
  discuss the possibility of Relaxed Mixed Integer
  Programming with the vendor.
• Reviewed the words in 4.4.2.2(3) and agreed the
  words should be revised to say QSE trades should
  be posted in the MIS Certified Area, not the MIS
  Secure Area. ERCOT will prepare a draft NPRR to
  correct.
• Discussed whether ERCOT is expected to notify
  QSEs if their Base Point is based on a mitigated
  Offer. Agreed this is not a requirement.

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Meeting Summary August 7 (continued)

• On August 7, we discussed
• ERCOT protocol clarifications
• Discussed Combined Cycle power augmentation
  methods in 6.5.5.2(9) and recommended ERCOT
  discuss with Randy Jones before returning
  decisions to TPTF
• Discussed the use of Generic Cost of energy in
  RUC, 5.5.2(4) versus the use of Energy Offer
  Curves. ERCOT will bring a draft NPRR for TPTF
  consideration.
• ERCOT asked if an Energy Offer Curve should be
  mandatory for RUC committed units. ERCOT will
  study further before bringing a NPRR to TPTF
• Discussed the use of telemetered ramp rate,
  versus ramp rate provided through registration,
  in SCED. ERCOT will research further and bring a
  recommendation to TPTF.
• Discussed whether a unit committed in DAM should
  be required to show the unit ON in their COP
  before RUC execution.

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Meeting Summary August 8

• On August 8, we discussed
• Draft Nodal PRR
• Discussed how to settle CRRs when the DAM fails
  to execute. Provided direction to ERCOT to draft
  a NPRR using no deration.
• Discussed options for CRR block sizes.
• Reviewed draft NPRR for Section 16.8.1 to
  prohibit Unbundled TSPs, DSPs, and ERCOT
  employees from owning CRRs
• On August 8, approved changes to Section 16.8.1
  to prohibit Unbundled TSPs, DSPs, and ERCOT
  employees from owning CRRs by a unanimous voice
  vote.
• Reviewed formatting changes proposed by ERCOT
  Market Rules for Section 8.1.2.2.1

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Meeting Summary August 8 (continued)

• On August 8, we discussed
• Changes proposed by ERCOT Market Rules for
  Section 8.1.2.2.1
• Commercial Operations Business Requirements
  Schedule
• Eligibility Scenarios for Make-Whole and RUC
• Training Update
• Initial Overview of Real-Time AS Commercial
  Operations Business Requirements Document
• Initial Overview of RUC Settlement Commercial
  Operations Business Requirements Document
• Draft Nodal PRRs
• Reviewed draft NPRR to address settlement issues
  with net metering in the nodal market.

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Meeting Summary August 21

• On August 21, we discussed
• Net Metering
• Reviewed draft Net Metering NPRR with language
  changes in Sections 1, 3, 6, and 10.
• On August 21, TPTF approved draft Net Metering
  Nodal PRR by a ballot vote of 100 in favor, with
  abstentions by CenterPoint, Occidental, and
  Exelon. All market segments were present. This
  draft NPRR will be sent to PRS.
• ERCOT discussed the association of EPS metering
  points to an electrical bus and concluded no
  additional protocol language was needed to allow
  ERCOT to map these relationships.
• EMS Business Requirements Review
• Initial review of State Estimator
• Initial review of Forced Outage Detection
• Initial review of Load Frequency Control

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Meeting Summary August 21 (continued)

• On August 21, we discussed
• ROS Update
• Update on ROS approval of ROS/TPTF Task Force
  recommendations on Principles of Consistency
  document
• Approval of draft NPRR for Annual Planning Model
  definition in Section 3.10.2.
• On August 21, TPTF approved draft NPRR for
  Annual Planning Model definition in Section
  3.10.2 by a unanimous voice vote. This draft NPRR
  will be sent to PRS.
• Discussed ROS comments on Section 5.5.1(5). The
  consensus of the group was to recommend using a
  reference to the Operating Guides instead of
  duplicating Operating Guide language in the
  Protocols.
• On August 21, TPTF approved comments on Section
  5.5.1(5) by a ballot vote of 90 in favor, with
  one negative vote by Garland and abstentions by
  CenterPoint and TXU Energy. All market segments,
  except Consumers, were present. These comments
  will be sent to TAC.

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Meeting Summary August 22

• On August 22, we discussed
• MMS Project Issues Review
• Ancillary Service/Energy Modeling
• Block Offer Modeling and Pricing
• Submission of Bilateral Trades
• Overlapping Offers/Bids
• Hot/Intermediate/Cold Startup Offer
• Offer/Bid Validation Timeline
• Offer/Bid Expiry Time
• Market Information System
• MIS Update
• ERCOT Clarification to Section 12.3(d)
• Training Update
• Draft NPRR for CRR Settlement without DAM

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Meeting Summary August 22 (continued)

• On August 22, we discussed
• Commercial Systems Requirements Schedule
• Initial overview of Real-Time Energy Settlements
  Business Requirements Document
• Review of comments received on Commercial
  Operations Real-Time AS Settlement Business
  Requirements Document
• On August 22, TPTF approved Real-Time AS
  Settlement Business Requirements by a ballot vote
  of 100 in favor, with abstentions by GEUS,
  CenterPoint Energy, Calpine, City of Dallas,
  Occidental, and Residential Consumers. All market
  segments were present.
• Review of comments received on Commercial
  Operations RUC Settlement Business Requirements
  Document
• On August 22, TPTF approved RUC Settlement
  Business Requirements by a ballot vote of 100 in
  favor, with one abstention by CenterPoint Energy.
  All market segments were present.
• Review of comments received on Commercial
  Operations DAM Make Whole Settlement Business
  Requirements Document
• On August 22, TPTF approved DAM Make Whole
  Settlement Business Requirements by a ballot vote
  of 100 in favor, with abstentions by CenterPoint
  Energy, Occidental, and Residential Consumers.
  All market segments, except cooperative, were
  present.

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Meeting Summary August 22 (continued)

• On August 22, we discussed
• Draft NPRRs related to CRRS
• Draft NPRR to address hourly granularity of
  bilateral trades
• On August 22, TPTF approved a draft NPRR to limit
  CRR trading, registered through ERCOTs CRR
  system, to time-of-use blocks for any number of
  days. The draft NPRR was approved by a ballot
  vote of 100 in favor, with abstentions by City
  of Garland and Calpine. All market segments,
  except cooperative, were present. This draft NPRR
  will be sent to PRS.
• Draft NPRR to address ability to offer 24-hour
  blocks
• On August 22, TPTF approved draft NPRR to specify
  that CRR awards and allocations of a one-month
  strip in a 7x24 block will be split into
  one-month strips of the three other blocks (5x16,
  2x16, 7x8). Each of these three blocks may be
  offered into subsequent CRR Auctions as separate
  block offers but not as a single 7x24 block. The
  draft NPRR was approved by a ballot vote of 83.3
  in favor, with one negative vote by TXU Energy
  and abstentions by NRG Texas, Calpine, City of
  Dallas, Residential Consumers, Stream Energy,
  StarTex Power, Strategic Energy, Accent Energy,
  Cirro Group, and Reliant. All market segments
  were present. This draft NPRR will be sent to PRS.

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Meeting Summary August 23

• On August 23, we discussed
• Nodal Program Update
• TXMAC Timeline
• On August 23, TPTF approved TXMAC Timeline as
  being in compliance with the protocols by verbal
  affirmation, with no abstentions. All market
  segments were present.
• Network Model Testing Clarification - Section
  3.10.4
• On August 23, TPTF approved Network Model
  Testing draft NPRR as modified by TPTF for
  Sections 3.10.1 and 3.10.4 by a unanimous ballot
  vote of 100 in favor with no abstentions. All
  market segments were present.
• Review PRS Remand of NPRR018, Separate LaaR and
  Generator MCPCs for RRS, for completeness
• Default QSE / LSE Scenarios and NPRR Draft for
  Synchronization of PRR624

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Next Meetings

• Next meetings
• Tuesday, September 5 and Wednesday, September 6
• Monday, September 11 and Tuesday, September 12
• Wednesday, September 27 thru Friday, September
  29
• On September 56, will be discussing Program
  Timeline and Budget.
• On September 1112, will be discussing
• Draft NPRR on CRR Settlement without DAM
• Draft NPRR for Synchronizing PRR624
  (Clarification of MP Default Language)
• Commercial Operations Business Requirements
• Initial Overview of RMR, Voltage Support, Black
  Start, Emergency Operations Settlement Commercial
  Operations Business Requirements Document
• Review of comments received on Real-Time Energy
  Settlements and DAM/RUC Eligibility Commercial
  Operations Business Requirements Documents
• EMS Business Requirements
• Initial Overview of second round of EMS Business
  Requirements Documents
• Review of comments received on Forced Outage
  Detection, State Estimator, and Load Frequency
  Control EMS Business Requirements Documents

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TAC Approval of Milestone

• On August 22, TPTF approved Real-Time AS
  Settlement Business Requirements by a ballot vote
  of 100 in favor, with abstentions by GEUS,
  CenterPoint Energy, Calpine, City of Dallas,
  Occidental, and Residential Consumers. All market
  segments were present.
• On August 22, TPTF approved RUC Settlement
  Business Requirements by a ballot vote of 100 in
  favor, with one abstention by CenterPoint Energy.
  All market segments were present.
• On August 22, TPTF approved DAM Make Whole
  Settlement Business Requirements by a ballot vote
  of 100 in favor, with abstentions by CenterPoint
  Energy, Occidental, and Residential Consumers.
  All market segments, except cooperative, were
  present.
• The Transition Plan says Any declaration of
  the accomplishment of a major milestone (business
  requirements, conceptual design, and successful
  completion of Market Participant testing) or a
  decision to proceed is contingent on the approval
  of both ERCOT and TAC.
• Request that TAC approve the milestones
• Approval of Real-Time AS Settlement Business
  Requirements
• Approval of RUC Settlement Business Requirements
• Approval of DAM Make Whole Settlement Business
  Requirements

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Questions

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