Issues

SCR751

Title	Nodal -- Power Balance Shadow Price Cap Curve for SCED (formerly titled "Nodal -- Shadow Price Cap")
Next Group
Next Step
Status	Approved on 01/20/2009

Date	Gov Body	Action Taken	Next Steps
01/20/2009	BOARD	Approved
12/04/2008	TAC	Recommended for Approval	ERCOT Board consideration of SCR751
11/19/2008	WMS	Recommended for Approval	TAC consideration of SCR751

Date

Gov Body

Action Taken

Next Steps

01/20/2009

BOARD

Approved

12/04/2008

TAC

Recommended for Approval

ERCOT Board consideration of SCR751

11/19/2008

WMS

Recommended for Approval

TAC consideration of SCR751

Date	Gov Body	Motion	Result
01/20/2009	BOARD	To approve SCR751 as recommended by TAC.	Passed
12/04/2008	TAC	To recommend approval of SCR751 as recommended by WMS.	Passed
11/19/2008	WMS	To grant SCR751 Urgent status and to recommend approval as amended by Transition Plan Task Force (TPTF) comments.	Passed

Date

Gov Body

Motion

Result

01/20/2009

To approve SCR751 as recommended by TAC.

Passed

12/04/2008

To recommend approval of SCR751 as recommended by WMS.

Passed

11/19/2008

To grant SCR751 Urgent status and to recommend approval as amended by Transition Plan Task Force (TPTF) comments.

Passed

Status:	Approved
Date Posted:	Oct 30, 2008
Sponsor:	Marguerite Wagner on behalf of the Congestion Management Working Group (CMWG)
Urgent:	Yes
Sections:	Not Applicable.
Description:	This System Change Request (SCR) will convert the power balance penalty from a fixed value to a curve that is applied on a MW basis.
Reason:	Market Participants, through the Congestion Management Working Group (CMWG), request this change to avoid high prices during power balance violations for small MW values. This SCR proposes to add the functionality to implement a curve instead of a fixed value for the power balance Shadow Price cap. This revision is needed six months prior to go-live. The final determination of policies for setting the Shadow Price Caps will be approved through the Protocol Revision Request (PRR) process.