Title: Addition of Year 6 to the SSWG Base Cases
Next Group:
Next Step:
Status: Approved on 03/19/2013
Effective Dates:


Date Gov Body Action Taken Next Steps
03/19/2013 BOARD Approved
02/07/2013 TAC Recommended for Approval ERCOT Board Consideration
01/17/2013 PRS Recommended for Approval TAC Consideration
12/13/2012 PRS Recommended for Approval PRS IA Review

Voting Record

Date Gov Body Motion Result
03/19/2013 BOARD To approve NPRR502 as recommended by TAC in the 2/7/13 TAC Report Passed
02/07/2013 TAC To recommend approval of NPRR502 as recommended by PRS in the 1/17/13 PRS Report Passed
01/17/2013 PRS To endorse and forward the 12/13/12 PRS Report and revised Impact Analysis for NPRR502 to TAC Passed
12/13/2012 PRS To recommend approval of NPRR502 as submitted Passed

Vote tallies here reflect individual votes, not the weight of the votes by market segment. Affirmative votes are not recorded in these vote tallies. For additional details on the voting record, please consult the Recommendation or Action Report, or the official vote tally if available, as posted in the key documents.


Status: Approved
Date Posted: Nov 20, 2012
Sponsor: Planning Working Group (PLWG)
Urgent: No
Sections: 3.10.2,
Description: This Nodal Protocol Revision Request (NPRR) adds a sixth year (Year 6) to the Steady State Working Group (SSWG) Data Set B base cases. Revisions to the Transmission Project and Information Tracking (TPIT) and Annual Load Data Request (ALDR) procedures will be required as result of this NPRR. The Planning Working Group (PLWG) has submitted Planning Guide Revision Request (PGRR) 026, Addition of Year 6 to the SSWG Base Cases, to revise related sections of the Planning Guide.
Reason: The present bases cases (Data Set B) cover a planning period of five years. This timeframe is not sufficient to address large regional projects with scopes requiring long-lead time consideration (i.e., 345-kV and certification). In many cases, the entire project spectrum including initial assessments, identification of alternatives, project selection, certification, and implementation takes longer than five years. Additionally, near-term economic projects potentially having reliability drivers beyond the five-year planning horizon can be supported with this additional base case. Similarly, this additional Year 6 base case can help provide direction to the selection of a longer term solution potentially resulting in a more cost-effective near-term plan development. Lastly, proposed North American Electric Reliability Corporation (NERC) Reliability Standard TPL-001-2, Transmission System Planning Performance Requirements, requires assessment for one of the years in the "Long-Term Transmission Planning Horizon (years 6-10)."

Key Documents

Related Content