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AF2-182 Transition Sort Retool Results -- Reprioritized to Transition Cycle #1

v1.00 released 2023-12-14 11:08

Nelson-Lee County 345 kV II

180.0 MW Capacity / 300.0 MW Energy

Introduction

In accordance with Tariff Part VII, Subpart B, section 304, PJM performed load flow analysis (Transition Sort Retool) on all AE1 through AG1 projects that have met eligibility requirements according to Tariff, Part VII, Subpart B, section 303. The purpose of this study is to determine whether a project would be classified as eligible for the Expedited Process (Fast Lane) or if it would be reprioritized to be studied as part of Transition Cycle #1 (TC1) using the criteria from the Expedited Process Eligibility section of Tariff Part VII, section 304. This is not a System Impact Study report.

Below are the results of the study, details of how the study was performed, criterion used in the evaluation of the Expedited Process vs. TC1 determination, and next steps in the interconnection process for your project.

Transition Cycle #1:

The AF2-182 project has not met the Expedited Process Eligibility requirements in Tariff Part VII, Subpart B, section 304 and will therefore be reprioritized to Transition Cycle #1. Please see "Transition Cycle #1 Rules" below.

Transition Sort Retool Study Process and Criteria:

In order to determine Expedited Process vs. Transition Cycle #1 classification, projects which met the Transition Eligibility requirements from Tariff Part VII, Subpart B, section 303 were studied on the base case model that was used for the original System Impact Study analysis. Both a summer peak and light load load flow analysis were performed. Projects that have cost allocation eligibility or are identified as the first to cause a system violation which requires the need for a Network Upgrade with a total estimated cost greater than $5 million will be reprioritized to Transition Cycle #1. All other projects will be eligible for the expedited procedures set forth in Tariff Part VII, Subpart B, section 304 (B).

Expedited Process Eligibility: OATT Tariff Part VII, section 304:

A project is not eligible for the expedited process if it has cost allocation eligibility or is identified as the first to cause, as determined according to Tariff, Part VI, section 217.3, for a Network Upgrade which has a total estimated cost of greater than $5,000,000. Such cost estimate will be based on Transmission Provider's most recently available data.

Not considered in the Transition Sorting: The cost of the Interconnection Facilities is not considered when determining a project's eligibility for the expedited process. Affected Systems upgrade costs are also not considered in the evaluation.

Transition Sort Retool Results Provided:

This report includes a list of:

  1. the overloaded flowgates (overloaded facilities + contingency pair) that the project contributes towards
  2. other interconnection projects that may also contribute to the overloaded facility, and
  3. the total estimated cost for any required Network Upgrades.

Important Notes:

Note for Uprate Projects: Per Tariff Part VII, Subpart B, section 304 (B), if a project is an uprate (project relies on the Interconnection Facilities of a prior project) whose base project does not qualify for the expedited process, the uprate also will not qualify for the expedited process, regardless of analysis results.

Notes regarding Results displayed:

  1. Some flowgate overloads that a New Service Request contributes to, but does not contribute enough to meet cost allocation eligibility (per Manual 14A, Attachment B.3), may be reported in this Transition Sort report. These types of flowgates do not affect the classification of the New Service Request as either Expedited Process or Transition Cycle #1 because cost allocation eligibility has not been met.
  2. For projects that were determined to not meet Expedited Process eligibility and are being reprioritized to Transition Cycle #1, not all reinforcements in excess of $5,000,000 may be shown in this report. This report may only display a subset of those reinforcements determined to be in excess of $5,000,000 which would classify the project as not meeting Expedited Process Eligibility. This is not a formal System Impact Study.

Next Steps for your project:

Transition Cycle #1 Rules:

Refer to Tariff Part VII, Subpart B, section 304 (C) for the Transition Cycle #1 Project Rules.

Transition Cycle #1 will start no later than one year from the Transition Start Date (July 10, 2023). Transition Cycle #1 will run simultaneously with the expedited process, however Transition Cycle #1, Phase III will not begin until all expedited process projects have been completed.

Projects that are reprioritized to Transition Cycle #1 will not need to re-apply to the Interconnection Cycle Process. Therefore, there is no Application Review Phase for Transition Cycle #1. The cycle process for Transition Cycle #1 includes three Study Phases and three Decision Points:

  1. Phase I System Impact Study and Decision Point I; and
  2. Phase II System Impact Study and Decision Point II; and
  3. Phase III System Impact Study and Decision Point III

Refer to Tariff Part VII, Subpart D, section 307 for the Transition Cycle #1 study process.

General

The Interconnection Customer (IC) has proposed an uprate to a planned/existing Solar generating facility located in the ComEd zone Lee County, Illinois. This project is an increase to the Interconnection Customer's original project, which will share the same point of interconnection. The AF2-182 queue position is a 300.0 MW uprate (180.0 MW Capacity uprate) to the previous project. The total installed facilities will have a capability of 520.0 MW.

Project Information
Queue Number AF2-182
Project Name Nelson-Lee County 345 kV II
Developer Name Duke Energy Renewables Solar, LLC
State Illinois
County Lee
Transmission Owner ComEd
MFO 520.0 MW
MWE 300.0 MW
MWC 180.0 MW
Fuel Type Solar
Basecase Study Year 2023

Point of Interconnection

AF2-182 will interconnect on the ComEd transmission system by tying to prior PJM queue projects AF1-280 and AF1-281 and interconnected to a new Interconnection Substation on 345 kV line 15501. The proposed interconnection is behind the Point-Of-Interconnection between ComEd and the prior queue projects

.

Summer Peak Analysis

The Queue Project was evaluated as a 300.0 MW (Capacity 180.0 MW) injection in the ComEd area. Project was evaluated for compliance with applicable reliability planning criteria (PJM, NERC, NERC Regional Reliability Councils, and Transmission Owners). Potential Summer peak period network impacts are listed below:

Important to Note:

Note for Uprate Projects: Per Tariff Part VII, Subpart B, section 304 (B), if a project is an uprate (project relies on the Interconnection Facilities of a prior project) whose base project does not qualify for the expedited process, the uprate also will not qualify for the expedited process, regardless of analysis results.

Notes regarding Results displayed:

  1. Some flowgate overloads that a New Service Request contributes to, but does not contribute enough to meet cost allocation eligibility (per Manual 14A, Attachment B.3), may be reported in this Transition Sort report. These types of flowgates do not affect the classification of the New Service Request as either Expedited Process or Transition Cycle #1 because cost allocation eligibility has not been met.
  2. For projects that were determined to not meet Expedited Process eligibility and are being reprioritized to Transition Cycle #1, not all reinforcements in excess of $5,000,000 may be shown in this report. This report may only display a subset of those reinforcements determined to be in excess of $5,000,000 which would classify the project as not meeting Expedited Process Eligibility. This is not a formal System Impact Study.
Summer Peak Analysis
Area Facility Description Contingency Name Contingency Type DC|AC Initial Loading Final Loading Rating (MVA) Rating Type MVA to Mitigate MW Contribution Details
CE AF2-041 TAP-ELECT JCT; B 345.0 kV Ckt 1 line
957470 to 270730 ckt 1
COMED_P4_937-45-BT2-3__
CONTINGENCY 'COMED_P4_937-45-BT2-3__'
 REMOVE UNIT 1 FROM BUS 274760                                  /*LEE CO EC;1U  13.8
 REMOVE UNIT 2 FROM BUS 274761                                  /*LEE CO EC;2U  13.8
 REMOVE UNIT 3 FROM BUS 274762                                  /*LEE CO EC;3U  13.8
 REMOVE UNIT 4 FROM BUS 274763                                  /*LEE CO EC;4U  13.8
 REMOVE UNIT 5 FROM BUS 274764                                  /*LEE CO EC;5U  13.8
 REMOVE UNIT 6 FROM BUS 274765                                  /*LEE CO EC;6U  13.8
 REMOVE UNIT 7 FROM BUS 274766                                  /*LEE CO EC;7U  13.8
 REMOVE UNIT 8 FROM BUS 274767                                  /*LEE CO EC;8U  13.8
 TRIP BRANCH FROM BUS 274759 TO BUS 274760 TO BUS 274761 CKT 1  /*LEE CO EC;   345.0 - LEE CO EC;1U  13.8 - LEE CO EC;2U  13.8
 TRIP BRANCH FROM BUS 274759 TO BUS 274762 TO BUS 274763 CKT 1  /*LEE CO EC;   345.0 - LEE CO EC;3U  13.8 - LEE CO EC;4U  13.8
 TRIP BRANCH FROM BUS 274759 TO BUS 274764 TO BUS 274765 CKT 1  /*LEE CO EC;   345.0 - LEE CO EC;5U  13.8 - LEE CO EC;6U  13.8
 TRIP BRANCH FROM BUS 274759 TO BUS 274766 TO BUS 274767 CKT 1  /*LEE CO EC;   345.0 - LEE CO EC;7U  13.8 - LEE CO EC;8U  13.8
 TRIP BRANCH FROM BUS 274768 TO BUS 270678 CKT 1                /*LEE CO EC;BP 345.0 - BYRON    ; B 345.0
 TRIP BRANCH FROM BUS 274768 TO BUS 274759 CKT 1                /*LEE CO EC;BP 345.0 - LEE CO EC;   345.0
END
Breaker AC 97.23 % 101.95 % 1837.0 STE 1872.77 96.89
CE BYRON ; B-CHERRY VA; B 345.0 kV Ckt 1 line
270678 to 270694 ckt 1
COMED_P4_006-45-BT7-8__
CONTINGENCY 'COMED_P4_006-45-BT7-8__'
 TRIP BRANCH FROM BUS 270678 TO BUS 270679 CKT 1   /*BYRON    ; B 345.0 - BYRON    ; R 345.0
 TRIP BRANCH FROM BUS 270678 TO BUS 930480 CKT 1   /*BYRON    ; B 345.0 - AB1-089 TAP  345.0
END
Breaker AC 104.55 % 109.49 % 1585.0 STE 1735.4 84.93
CE GOODINGS ;4B-GOODINGS ;3B 345.0 kV Ckt 1 line
270770 to 270766 ckt 1
COMED_P4_116-45-L11614_
CONTINGENCY 'COMED_P4_116-45-L11614_'
 DISCONNECT BUS 270769                             /*GOODINGS ;2R 345.0
 TRIP BRANCH FROM BUS 270667 TO BUS 270665 CKT 1   /*BLUE ISL ;RT 345.0 - BLUE ISL ; R 345.0
 TRIP BRANCH FROM BUS 270667 TO BUS 270927 CKT 1   /*BLUE ISL ;RT 345.0 - WILTON   ; R 345.0
 TRIP BRANCH FROM BUS 270769 TO BUS 270667 CKT 1   /*GOODINGS ;2R 345.0 - BLUE ISL ;RT 345.0
END
Breaker AC 100.04 % 101.0 % 2083.0 STE 2103.84 24.06
CE GARDEN PR; R-SILVER LK; R 345.0 kV Ckt 1 line
270759 to 270883 ckt 1
COMED_P1-2_345-L0626__B-R-B
CONTINGENCY 'COMED_P1-2_345-L0626__B-R-B'
 TRIP BRANCH FROM BUS 930480 TO BUS 270916 CKT 1   /*AB1-089 TAP  345.0 - WAYNE    ; B 345.0
END
Single AC 100.66 % 102.54 % 1568.0 STE 1607.82 30.24
CE CHERRY VA; B-GARDEN PR; R 345.0 kV Ckt 1 line
270694 to 270759 ckt 1
COMED_P1-2_345-L0626__B-R-B
CONTINGENCY 'COMED_P1-2_345-L0626__B-R-B'
 TRIP BRANCH FROM BUS 930480 TO BUS 270916 CKT 1   /*AB1-089 TAP  345.0 - WAYNE    ; B 345.0
END
Single AC 100.66 % 102.47 % 1568.0 STE 1606.79 30.24
AEP/AMIL J1180 TAP-05SULLIVAN 345.0 kV Ckt 1 line
956820 to 247712 ckt 1
AEP_P4_#3128_05EUGENE 345_A2
CONTINGENCY 'AEP_P4_#3128_05EUGENE 345_A2'
 OPEN BRANCH FROM BUS 243221 TO BUS 249504 CKT 1   /*05EUGENE     345.0 - 08CAYSUB     345.0
 OPEN BRANCH FROM BUS 243221 TO BUS 348885 CKT 1   /*05EUGENE     345.0 - 7BUNSONVILLE 345.0
END
Breaker AC 142.01 % 143.11 % 1685.0 B 2411.42 21.85

Light Load Analysis

At this time light load analysis not required for this project.

System Reinforcements

The table below lists all network upgrades which resolve the identified overloaded facilities in this report.

Important to Note:

Note for Uprate Projects: Per Tariff Part VII, Subpart B, section 304 (B), if a project is an uprate (project relies on the Interconnection Facilities of a prior project) whose base project does not qualify for the expedited process, the uprate also will not qualify for the expedited process, regardless of analysis results.

Notes regarding Results displayed:

  1. Some flowgate overloads that a New Service Request contributes to, but does not contribute enough to meet cost allocation eligibility (per Manual 14A, Attachment B.3), may be reported in this Transition Sort report. These types of flowgates do not affect the classification of the New Service Request as either Expedited Process or Transition Cycle #1 because cost allocation eligibility has not been met.
  2. For projects that were determined to not meet Expedited Process eligibility and are being reprioritized to Transition Cycle #1, not all reinforcements in excess of $5,000,000 may be shown in this report. This report may only display a subset of those reinforcements determined to be in excess of $5,000,000 which would classify the project as not meeting Expedited Process Eligibility. This is not a formal System Impact Study.
  3. Reinforcements previously identified by Transmission Owners for violations on lower voltage facilities are included in this report. Transmission Owner analysis will be updated as part of the Expedited Process and Transition Cycle 1 retools.
System Reinforcements
RTEP ID Title Total Cost
n6824 Mitigate sag on the line and replace a 345kV circuit breaker at Cherry Valley $12,200,000
n3515.1 Cherry Valley - Garden Prarie 345 kV line - reconductoring and sag mitigation. $19,400,000
n6639.1 Replace station conductor at TSS111 EJ, replace MOD. Relay upgrades, re-conductor part of the line. $22,300,000
n5318.1 Garden Prarie - Silver Lake R 345 kV Line - Reconductor and Station Bus Work $45,700,000
n6279 TSS 116 Replace 345 kV Circuit Breaker $3,200,000
n5808 AEP: eliminate the Eugene stuck breaker contingency. (AMIL upgrade will not be required) $3,424,014

Attachments

Conclusion

The Transition Sort load flow retool results indicate that AF2-182 is not eligible for the Expedited Process per PJM Tariff Part VII, Subpart B, section 304 (A) will be reprioritized to Transition Cycle #1. See next steps for your project in the "Introduction" section above.