Title Summary Report of HDL and LDL
Next Group
Next Step
Status Approved on 09/20/2011
Effective Dates


Date Gov Body Action Taken Next steps
09/20/2011 BOARD Approved
08/04/2011 TAC Recommended for Approval ERCOT Board for consideration.
07/21/2011 PRS Recommended for Approval TAC for consideration.
06/23/2011 PRS Recommended for Approval PRS for Impact Analysis review.
05/19/2011 PRS Recommended for Approval PRS for Impact Analysis review.

Voting Record

Date Gov Body Motion Result
09/20/2011 BOARD To approve NPRR360 as recommended by TAC in the 8/4/11 TAC Report. Passed
08/04/2011 TAC To recommend approval of NPRR360 as recommended by PRS in the 7/21/11 PRS Report. Passed
07/21/2011 PRS To endorse and forward the 6/23/11 PRS Report, Impact Analysis and Cost Benefit Analysis for NPRR360 to TAC with a recommended priority of High and a rank of 32.5. Passed
06/23/2011 PRS To endorse the 5/19/11 PRS Report as amended by the 6/20/11 WMS comments and to bring NPRR360 back to PRS for consideration of the Impact Analysis. Passed
05/19/2011 PRS To recommend approval of NPRR360 as revised by PRS. Passed


Status: Approved
Date Posted: May 4, 2011
Sponsor: Jackie Ashbaugh on behalf of the MIS User Group
Urgent: No
Description: This Nodal Protocol Revision Request (NPRR) creates a new posting for the sum of High Dispatch Limit (HDL) and the sum of Low Dispatch Limit (LDL) and any Generation Resource instances of manual overrides of HDL or LDL to the Market Information System (MIS) Public Area after every Security-Constrained Economic Dispatch (SCED) run. This NPRR also adds the requirement to post any Qualified Scheduling Entity (QSE) instances of manual overrides of HDL and LDL for a Generation Resource to the MIS Certified Area after every SCED run.
Reason: This NPRR will allow Real-Time operations data to be accessible to Market Participants so that they have visibility to Generation Resources restricted from full economic consideration by SCED. Currently, the only information available on HDL and LDL is at a QSE specific level when the limit is manually overridden. This will provide the market visibility to the sum of the MW quantities Dispatched by SCED and the amount of Dispatch room remaining until scarcity prices appear.

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