Issues

NPRR189

Summary
Action
Voting Record
Background
Key Documents

Summary

Title	Ancillary Service Deployment Clarification
Next Group
Next Step
Status	Approved on 10/20/2009
Effective Dates	12/01/2010 or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/09 Nodal Protocols Library)

Action

Date	Gov Body	Action Taken	Next Steps
09/17/2009	PRS	Recommended for Approval	TAC consideration of NPRR189
08/25/2009	PRS	Recommended for Approval	PRS Impact Analysis review
10/20/2009	BOARD	Approved
10/01/2009	TAC	Recommended for Approval	ERCOT Board consideration of NPRR189.

Date

Gov Body

Action Taken

Next Steps

09/17/2009

PRS

Recommended for Approval

TAC consideration of NPRR189

08/25/2009

PRS

Recommended for Approval

PRS Impact Analysis review

10/20/2009

BOARD

Approved

10/01/2009

TAC

Recommended for Approval

ERCOT Board consideration of NPRR189.

Voting Record

Date	Gov Body	Motion	Result
09/17/2009	PRS	To endorse and forward the 8/25/09 PRS Recommendation Report, as amended by the 9/17/09 ERCOT comments, and Impact Analysis for NPRR189 to TAC.	Passed
08/25/2009	PRS	To recommend approval of NPRR189 as submitted.	Passed
10/20/2009	BOARD	To approve NPRR189 as recommended by TAC in the 10/1/09 TAC Recommendation Report.	Passed
10/01/2009	TAC	To recommend approval of NPRR189 as recommended by PRS in the 9/17/09 PRS Recommendation Report.	Passed

Date

Gov Body

Motion

Result

09/17/2009

PRS

To endorse and forward the 8/25/09 PRS Recommendation Report, as amended by the 9/17/09 ERCOT comments, and Impact Analysis for NPRR189 to TAC.

Passed

08/25/2009

PRS

To recommend approval of NPRR189 as submitted.

Passed

10/20/2009

BOARD

To approve NPRR189 as recommended by TAC in the 10/1/09 TAC Recommendation Report.

Passed

10/01/2009

TAC

To recommend approval of NPRR189 as recommended by PRS in the 9/17/09 PRS Recommendation Report.

Passed

Background

Status:	Approved
Date Posted:	Jul 24, 2009
Sponsor:	ERCOT
Urgent:	No
Sections:	6.4.8.1, 6.4.8.2, 6.5.5.2, 6.5.7.2, 6.5.7.6.2.1, 6.5.7.6.2.2, 6.5.7.6.2.3
Description:	This Nodal Protocol Revision Request (NPRR) clarifies the difference between Ancillary Service capacity deployment and energy deployment and how it affects Security-Constrained Economic Dispatch (SCED). This NPRR also proposes non-substantive administrative changes, such as correcting acronym and defined term usage and section references.
Reason:	This NPRR is needed to provide more clarity and make the Nodal Protocols consistent with Energy Management System (EMS)/Market Management System (MMS) whitepaper and current MMS implementation.