***** EXTERNAL email. Please be cautious and evaluate before you click on links, open attachments, or provide credentials. *****

NOTICE DATE:  November 30, 2018
NOTICE TYPE:  W-C113018-01 Operations
SHORT DESCRIPTION:  Changes to Use of Interim Update Request Forms Associated with Certain Network Operations Model Changes for Resource Entities
INTENDED AUDIENCE:  Resource Entities
DAY AFFECTED:  January 1, 2019
LONG DESCRIPTION:  Pursuant to Protocol Section 3.10.4, ERCOT Responsibilities, ERCOT has the discretion in certain circumstances to consider an interim update Network Operations Model Change Request (NOMCR) to be processed outside of the timeline described in Protocol Section 3.10.1, Time Line for Network Operations Model Changes.  Effective January 1, 2019, in an effort to improve the timeliness and accuracy of models used by ERCOT to carry out various responsibilities, a few significant modeled items with high impact will be removed from the list of items that may be considered*** for an interim update if submitted beyond the stated deadlines below.
Interim Update Restrictions List:

*      The following seven items will be removed from interim update consideration (submittal deadline of Protocol Section 3.10.1 timeline applies)***:

-     New paired existing/future modeling where  contingencies need to be created and managed in ERCOT's model(s) for the time of field transition

-     New substation with line-breaker(s) (or substation breaker/line reconfiguration)

-     New physical line

-     New physical transformer

-     TSP equipment (or tap-substation) for new generation with coordinated model-ready date

-     Synchronous condenser

-     Item requiring Resource Node additions/modifications

*      The following three  items will be considered for interim update processing if submittal meets deadline of 65 days prior to scheduled database load***:

-     New tap station (no line controlling breakers)

-     New shunt compensator

-     New static VAr compensator

*      The following two  items will be considered for interim update processing if submittal meets deadline of 20 days prior to scheduled database load***:

-     Field vs model cleanup (only deletes)

-     New load (regardless if it includes new load controlling breaker)

*** Exceptions:

*      If needed to avoid a reliability risk to the ERCOT System, and if in a timeframe that is less than the submittal deadline listed above, the Market Participant shall provide, as an attachment to the change request (NOMCR, CAMR, or ICR): (1) the ERCOT Interim Update Request form, and (2) supporting information for a reliability risk involving these change items that demonstrates that the requested change relieves the reliability risk.

*      In an ERCOT-declared Emergency, interim update restrictions may be temporarily waived.
ADDITIONAL INFORMATION:  Request for Interim Network Model Update forms can be downloaded from the Network Operations Model Change Schedule<http://www.ercot.com/gridinfo/transmission/opsys-change-schedule> page of the ERCOT website.  The contents of this notice and associated requirements were shared with Market Participants through the Network Data Support Working Group (NDSWG). The form and additional information required for interim updates clarify and standardize the documentation used when submitting a Resource Asset Registration Form (RARF) adding new equipment where an interim update is requested or required.
CONTACT:  If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at [log in to unmask]<mailto:[log in to unmask]>.
If you are receiving email from a public ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.

nb