Title MMS DC Tie Schedule Data Source
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Next Step
Status Approved on 02/16/2010
Effective Dates

or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (03/01/10 Nodal Protocols Library)


Date Gov Body Action Taken Next steps
12/17/2009 PRS Recommended for Approval PRS IA Review
01/21/2010 PRS Recommended for Approval TAC Consideration
02/04/2010 TAC Recommended for Approval Board Consideration
02/16/2010 BOARD Approved

Voting Record

Date Gov Body Motion Result
12/17/2009 PRS To recommend approval of NPRR200 as submitted Passed
01/21/2010 PRS To endorse and forward the 12/17/09 PRS Recommendation Report and Impact Analysis to TAC Passed
02/04/2010 TAC To recommend approval of NPRR200 as recommended by PRS in the 1/21/10 PRS Report Passed
02/16/2010 BOARD To approve NPRR200 as recommended by TAC in the 2/4/10 TAC Report Passed


Status: Approved
Date Posted: Nov 30, 2009
Sponsor: ERCOT
Urgent: No
Sections: 2.1, 2.2, 4.4.4,,,, 9.17.2
Description: This Nodal Protocol Revision Request (NPRR) changes the source of Direct Current Tie (DC Tie) Schedules for use by the Market Management System (MMS) to an associated Qualified Scheduling Entity (QSE) submitted Electronic Tag (e-Tag). This NPRR also revises the definition of DC Tie Schedule and adds a new acronym to Section 2.
Reason: The DC Tie Schedule submission required by the Protocols is redundant as ERCOT already has access to the required information through the Open Access Technology International, Inc. (OATI) database. The requirement for the Qualified Scheduling Entity (QSE) to also submit the DC Tie information through the MMS interface is not needed and creates the possibility that the DC Tie Schedule used by MMS may not be synchronized with the e-Tag information in the OATI database. To avoid this possibility, MMS can be modified to use the OATI database information without the additional requirement to submit through the MMS interface.

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