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NPRR091
Summary
| Title | Scarcity Pricing and Mitigated Offer Cap During the Period Commencing on the Nodal Market Implementation Date and Continuing for a Total of 45 Days |
|---|---|
| Next Group | |
| Next Step | |
| Status | Approved on 08/17/2010 |
| Effective Dates |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (09/01/10 Nodal Protocols Library) |
Action
| Date | Gov Body | Action Taken | Next Steps |
|---|---|---|---|
| 08/16/2010 | BOARD | Approved | |
| 08/17/2010 | BOARD | Approved | |
| 08/07/2008 | TAC | Deferred/Tabled | Consideration of NPRR091 by TAC. |
| 07/17/2008 | PRS | Recommended for Approval | Consideration of NPRR091 by TAC. |
| 01/06/2010 | TAC | Deferred/Tabled | Consideration of NPRR091 by TAC. |
| 04/08/2010 | TAC | Recommended for Approval | ERCOT Board consideration of NPRR091 |
| 05/19/2010 | WMS | TAC consideration of NPRR091 | |
| 02/04/2010 | TAC | Deferred/Tabled | TAC consideration of NPRR091 |
| 06/03/2010 | TAC | Recommended for Approval | ERCOT Board consideration of NPRR091 |
| 06/15/2010 | BOARD | Deferred/Tabled | ERCOT Board consideration of NPRR091 |
| 03/04/2010 | TAC | Deferred/Tabled | TAC consideration of NPRR091 |
| 05/22/2008 | PRS | Deferred/Tabled | Review of Impact Analysis and Recommendation Report. |
| 03/20/2008 | PRS | Deferred/Tabled | Review of final Impact Anaysis and Recommendation Report |
| 02/21/2008 | PRS | Recommended for Approval | PRS review of the Impact Analysis and Recommendation Report. |
| 01/17/2008 | PRS | Deferred/Tabled | Continued consideration of NPRR091 by PRS at its February 21, 2008 meeting. |
| 12/13/2007 | PRS | Deferred/Tabled | PRS consideration |
Voting Record
| Date | Gov Body | Motion | Result |
|---|---|---|---|
| 08/16/2010 | BOARD | To approve NPRR091 as recommended by TAC in the 6/3/10 TAC Report | Passed |
| 08/17/2010 | BOARD | To approve NPRR091 as recommended by TAC in the 6/3/10 TAC Report. | Passed |
| 08/07/2008 | TAC | To table NPRR091 until the TAC meeting following the establishment of a revised Texas Nodal Market Implementation Date. | Passed |
| 07/17/2008 | PRS | To endorse the Impact Analysis and Recommendation Report for NPRR091 and forward the documents to TAC. | Passed |
| 01/06/2010 | TAC | To table NPRR091 for one month. | Passed |
| 04/08/2010 | TAC | To recommend approval of NPRR091 as recommended by PRS in the 7/17/08 PRS Report and as amended by the 3/29/10 WMS comments. | Passed |
| 05/19/2010 | WMS | ||
| 02/04/2010 | TAC | To table NPRR091 for one month. | Passed |
| 06/03/2010 | TAC | To recommend approval of NPRR091 as amended by the 5/26/10 WMS comments. | Passed |
| 06/15/2010 | BOARD | To table NPRR091. | Passed |
| 03/04/2010 | TAC | To table NPRR091 and request that WMS provide comments on the Options under consideration. | Passed |
| 05/22/2008 | PRS | To table NPRR091 pending development of the final Impact Analysis. | Passed |
| 03/20/2008 | PRS | To table NPRR091 pending development of the final Impact Analysis (IA). | Passed |
| 02/21/2008 | PRS | To set the values of the X at $180 per MWh with a Heat Rate of 18 mmBtu per MWh, and establish an Energy Offer Curve floor of -$50 per MWh. | Passed |
| 01/17/2008 | PRS | To table NPRR091 until the February 21st PRS meeting. | Passed |
| 12/13/2007 | PRS | To table NPRR091. | Passed |
Background
| Status: | Approved |
|---|---|
| Date Posted: | Dec 5, 2007 |
| Sponsor: | TPTF |
| Urgent: | No |
| Sections: | 3.19, 4.4.11.2 |
| Description: | This Nodal Protocol Revision Request (NPRR) adds: (1) A provision to Section 3.19 that all transmission constraints are treated as non-competitive constraints during an initial 45 Operating Day period, beginning with the Texas Nodal Market Implementation Date (TNMID). (2) New Section 4.4.11.2, which requires that the System-Wide Offer Cap (SWCAP) be set to the higher of $180 per MWh or 18 mmBtu per MWh times the Fuel Index Price (FIP) during an initial 45 Operating Day period, beginning with the TNMID, provided that a Market Participant who burns fuel oil rather than natural gas may dispute the use of $180 per MWh or 18 mmBtu heat rate per MWh times FIP if the Generation Resource’s Settlement Point Price does not cover the cost incurred by the Market Participant to provide energy or Ancillary Services. This new section also establishes an Energy Offer Curve floor adjusted to -$50 per MWh. |
| Reason: | (1) The purpose of these changes is to add safeguards during an initial shake-down period of nodal market operations to limit the economic consequences of bids and offers as reflected in the Day Ahead Market (DAM) and Real Time Settlement Point Prices. The shake-down period has been selected to allow Market Participants sufficient time to build experience by becoming familiar with the operation of the DAM and Real Time nodal market systems. The methodology selected implements the safeguards described in this NPRR by utilizing the existing ERCOT nodal system designs and will not, and are not intended, to require ERCOT to change or modify the market system design. In all cases, either during this shake-down period or during normal operation of the nodal market systems, all DAM and Adjustment Period and Real Time Energy Offers and DAM Ancillary Service Offers are validated against the SWCAP to assure that no offers used in the nodal price calculations for energy or ancillary service capacity exceed the SWCAP in both the DAM and Real Time Market. Therefore, no special changes are required to the functionality of ERCOT or Market Participant systems during the initial shake-down period or upon its expiration and the assumption of normal system operations. (2) This NPRR creates a set of offer caps for the 45 day period after Nodal startup. (3) This NPRR incorporates the concept into the Nodal Protocols of the Nodal Startup Transition Rules proposal from the Independent Market Monitor (IMM), which was approved by TPTF on September 25, 2007.(4) This NPRR incorporates into nodal Protocols a set of Nodal Startup Transition Rules in response to the PUCT Chairman Memo of July 28, 2005 (filed in PUCT Project 28500, Activities Related to the Implementation of a Nodal Market for the Electric Reliability Council of Texas) and "requiring cost based offer limitations for an appropriate time period." |
Key Documents
Dec 5, 2007 - doc - 104.5 KB
Dec 5, 2007 - xls - 83 KB
Dec 10, 2007 - doc - 58 KB
Dec 17, 2007 - doc - 99.5 KB
Dec 19, 2007 - doc - 55 KB
Dec 20, 2007 - xls - 83.5 KB
Dec 20, 2007 - doc - 45.5 KB
Jan 10, 2008 - doc - 55.5 KB
Jan 14, 2008 - doc - 41 KB
Jan 22, 2008 - doc - 106 KB
Feb 13, 2008 - doc - 48.5 KB
Feb 19, 2008 - doc - 45.5 KB
Feb 21, 2008 - xls - 109 KB
Feb 26, 2008 - doc - 112 KB
Mar 13, 2008 - doc - 47.5 KB
Mar 25, 2008 - doc - 112 KB
May 28, 2008 - doc - 113.5 KB
Jun 13, 2008 - doc - 53 KB
Jun 18, 2008 - doc - 48 KB
Jul 21, 2008 - doc - 119 KB
Aug 11, 2008 - doc - 121.5 KB
Mar 10, 2009 - doc - 39.5 KB
Jan 7, 2010 - doc - 104.5 KB
Jan 27, 2010 - doc - 66.5 KB
Jan 29, 2010 - doc - 56.5 KB
Feb 1, 2010 - doc - 41 KB
Feb 1, 2010 - doc - 45 KB
Feb 2, 2010 - doc - 61.5 KB
Feb 8, 2010 - doc - 123.5 KB
Feb 8, 2010 - xls - 89 KB
Feb 19, 2010 - doc - 59 KB
Feb 23, 2010 - doc - 54.5 KB
Feb 23, 2010 - doc - 55 KB
Feb 25, 2010 - doc - 36.5 KB
Mar 8, 2010 - doc - 130 KB
Mar 16, 2010 - doc - 43.5 KB
Mar 23, 2010 - doc - 69.5 KB
Mar 29, 2010 - doc - 54.5 KB
Apr 5, 2010 - doc - 41 KB
Apr 12, 2010 - doc - 135.5 KB
May 19, 2010 - doc - 37.5 KB
May 26, 2010 - doc - 54 KB
Jun 4, 2010 - doc - 143.5 KB
Jun 17, 2010 - doc - 144.5 KB
Aug 17, 2010 - doc - 145 KB