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NPRR209
Summary
| Title | Data Posting Changes to Comply with P.U.C. Subst. R. 25.505 |
|---|---|
| Next Group | |
| Next Step | |
| Status | Approved on 11/16/2010 |
| Effective Dates |
12/01/2010
|
Action
| Date | Gov Body | Action Taken | Next Steps |
|---|---|---|---|
| 11/16/2010 | BOARD | Approved | |
| 11/04/2010 | TAC | Recommended for Approval | ERCOT Board for consideration. |
| 02/18/2010 | PRS | Deferred/Tabled | PRS for language consideration. |
| 04/22/2010 | PRS | Recommended for Approval | TAC for consideration. |
| 03/25/2010 | PRS | Recommended for Approval | PRS for Impact Analysis review. |
| 05/06/2010 | TAC | Deferred/Tabled | TAC for consideration. |
| 07/01/2010 | TAC | Deferred/Tabled | TAC for consideration. |
| 08/05/2010 | TAC | Deferred/Tabled | TAC for consideration. |
Voting Record
| Date | Gov Body | Motion | Result |
|---|---|---|---|
| 11/16/2010 | BOARD | To approve NPRR209 as recommended by TAC in the 11/4/10 TAC Report. | Passed |
| 11/04/2010 | TAC | To recommend approval of NPRR209 as amended by the 11/4/10 Luminant Energy comments and as revised by TAC. | Passed |
| 02/18/2010 | PRS | To table NPRR209. | Passed |
| 04/22/2010 | PRS | To endorse and forward the 3/25/10 PRS Report and Impact Analysis for NPRR209 to TAC. | Passed |
| 03/25/2010 | PRS | To recommend approval of NPRR209 as submitted. | Passed |
| 05/06/2010 | TAC | To table NPRR209. | Passed |
| 07/01/2010 | TAC | To table NPRR209 for one month. | Passed |
| 08/05/2010 | TAC | To to table NPRR209. | Passed |
Background
| Status: | Approved |
|---|---|
| Date Posted: | Feb 5, 2010 |
| Sponsor: | Adrian Pieniazek, NRG Texas and Randy Jones, Calpine |
| Urgent: | No |
| Sections: | 1.3.1.1, 6.5.7.1.13 |
| Description: | This Nodal Protocol Revision Request (NPRR) removes a requirement to post certain State Estimator information that can be used to determine Resource status, which is confidential information as per Public Utility Commission of Texas (PUCT) rules. |
| Reason: | State Estimator data includes transmission and transformer flow information as identified in paragraphs (4)(b) and (4)(d) of Section 6.5.7.1.13, Data Inputs and Outputs for the Real-Time Sequence and SCED. Because transmission and transformer flow data at generation-only busses reflects generation output, disclosure of this information would make it possible to determine Resource status information in Real-Time. Resource status information has consistently been considered competitively sensitive information in the competitive market and cannot be posted until 60 days after the operating day. See subsection (f)(3)(B)(iii) of P.U.C. Subst. R. 25.505, Resource Adequacy in the Electric Reliability Council fo Texas Power Region. During the initial phases of Nodal Market testing, NRG Texas noticed that the posting of certain transmission information every hour, as required by Protocol Sections 6.5.7.1.13(4)(b) and (d), allows Market Participants to determine the actual output of Resources on the system. NRG Texas and Calpine filed comments and a proposed amendment to address this issue via NPRR 202, Clarification of Network Operations Model and State Estimator Postings, which restricted other information in the network model from being publicly posted. The proposed amendment was rejected, due in part to concerns that attempting to modify NPRR202 could hold up that NPRR’s implementation. Because NRG Texas and Calpine agree that the majority of NPRR202 is acceptable and neither entity wishes to hold up progress on NPRR202, they chose not to appeal the rejection of the proposed amendment. Instead, this new NPRR addresses the specific issues that are of concern to NRG Texas and Calpine. PUCT Subst. R. 25.505(f)(3)(B) states: "Two months after the start of operation of the market under a nodal market design: Offer curves (prices and quantities) for each type of ancillary service and for energy at each settlement point in the real-time market, shall be posted 60 days after the day for which the information is accumulated except that, for the highest-priced offer selected or dispatched for each interval on an ERCOT-wide basis, ERCOT shall post the offer price and the name of the entity submitting the offer 48 hours after the day for which the information is accumulated. If the MCPE or the MCPC exceeds the event trigger during any interval, the portion of every market participant’s price-quantity offer pairs for balancing energy service and each other ancillary service that is at or above the event trigger for that service and that interval shall be posted seven (7) days after the day for which the offer is submitted. Other resource-specific information, as well as self-arranged energy and ancillary capacity services, and actual resource output, for each type of service and for each resource at each settlement point shall be posted 60 days after the day for which the information is accumulated." (emphasis added)If Resource status information is available in Real-Time, in addition to being contrary to the PUCT rule, availability of this data may provide gaming opportunities. For example, the availability of such data may allow other generation owners to know when generation is not available in a certain area and raise their offer prices accordingly. |
Key Documents
Feb 5, 2010 - doc - 109 KB
Feb 5, 2010 - doc - 72.5 KB
Feb 15, 2010 - doc - 49.5 KB
Feb 19, 2010 - doc - 117.5 KB
Feb 19, 2010 - xls - 93.5 KB
Mar 25, 2010 - doc - 40 KB
Mar 26, 2010 - doc - 102 KB
Mar 26, 2010 - xls - 93.5 KB
Apr 14, 2010 - doc - 46 KB
Apr 21, 2010 - doc - 67 KB
Apr 21, 2010 - doc - 42 KB
Apr 27, 2010 - doc - 107 KB
Apr 27, 2010 - xls - 120.5 KB
May 4, 2010 - doc - 66.5 KB
May 7, 2010 - doc - 111 KB
May 7, 2010 - xls - 137.5 KB
Jul 6, 2010 - doc - 115.5 KB
Jul 6, 2010 - xls - 103 KB
Jul 6, 2010 - xls - 125 KB
Aug 5, 2010 - doc - 116.5 KB
Oct 28, 2010 - doc - 66 KB
Oct 28, 2010 - doc - 46.5 KB
Nov 3, 2010 - doc - 69 KB
Nov 4, 2010 - doc - 66 KB
Nov 5, 2010 - doc - 126.5 KB
Nov 12, 2010 - doc - 82 KB
Nov 16, 2010 - doc - 127.5 KB