PJM Upgrade Request Queue X4-036 250MW Braidwood System Impact Study Report March 2014 © PJM Interconnection 2014. All rights reserved. 1 PJMDOCS-#767311-v1-X4-036_SIS_Report.DOC Preface The intent of this System Impact Study is to determine a plan, with cost and construction time estimates, for the Network Upgrades necessary to provide the Incremental Auction Revenue Rights (IARRs) associated with the Upgrade Request as provided by the New Service Customer pursuant to Section 7.8 of Schedule 1 of the Operating Agreement and Part VI of the PJM Tariff. In some instances, a New Service Customer with an associated Upgrade Request may not be responsible for 100% of the identified Network Upgrade cost because other transmission network uses exist. An estimate of the sharing of the Network Upgrade costs will be provided. © PJM Interconnection 2014. All rights reserved. 2 PJMDOCS-#767311-v1-X4-036_SIS_Report.DOC Queue Position X4-036 250 MW Braidwood – Cook Upgrade Request System Impact Study Report General The New Service Customer, Exelon Generation Company, LLC has requested evaluation of the required Network Upgrades to support awarding to the New Service Customer IARRs, in the amount of 250 MW, having specified a source location of Braidwood, and the sink location as Cook. Network Upgrades Cost Summary This Upgrade Request was studied in conjunction with other Upgrade Requests in order to provide the least cost option for all requests. This study resulted in identifying the following required reinforcements in order to grant the IARRs associated with the X4036 project. Item Limiting Constraint 17ROXANA138 KV STA17R1 n4102 2.4 n4103 2.4 n4112 0.2 ComEd 66 E FRN345 KV 11601 ComEd 7 STATE 138 KV STA17R1 NIPSCO limit – NIPSCO mitigation required - ** 77 MAZON138 KV 0108 2 ComEdNIPSCO Tie ComEd Reconductor 10.2 miles of 138kV line 0108 from Mazon to LaSalle to achieve new ratings of 208/264/275 n4113 17.75 77 MAZON138 KV 1205 4 ComEd n4114 9.75 86 DAVIS138 KV TR83CTS 86 DAVIS345 KV TR83CTP 945 CRET345 KV CRESTJ1 ComEd Reconductor 5.7 miles of 138kV line 1205 from Mazon to Dresden to achieve new ratings of 292/321/433 Install 4th autotransformer at Davis Creek Install 4th autotransformer at Davis Creek NIPSCO limit – NIPSCO mitigation required - ** IPL Limit – IPL mitigation required. - ** 3 4 5 6 7 10 11 Replace 345kV bus tie 3-4 at Braidwood. Replace 345kV bus tie 14-15 at Braidwood. Replace station conductor on 345kV line 11601 to achieve new ratings of 1660/1917/2488 20 BRAID345 KV 2003 2 9 Estimated Cost ($M) ** 20 BRAID345 KV 2001 1 8 PJM Network Upgrade Number - TO ComEdNIPSCO Tie ComEd Breed-Wheatland 345 kV line l/o Rockport-Jefferson 765 kV line ComEd ComEdNIPSCO Tie AEP – IPL Tie Estimated mitigation NIPSCO limit – NIPSCO mitigation required n4115 14.6 © PJM Interconnection 2014. All rights reserved. 3 PJMDOCS-#767311-v1-X4-036_SIS_Report.DOC Item PJM Network Upgrade Number - Estimated Cost ($M) ** AMIL limit – AMIL mitigation required - ** AMILAEP AMIL limit – AMIL mitigation required - ** AMIL AMIL limit – AMIL mitigation required - ** TO AMIL Estimated mitigation AMIL limit – AMIL mitigation required 12 Limiting Constraint Brokaw-N Leroy 138 kV l/o Clinton-Oreana-GooseCrk 345 kV BUNSONV3345 KV EUGBUN1 AMIL 13 14 Bunsonville-Eugene 345 kV l/o Casey-Breed 345 kV 15 BUNSONVILLESIDNEY34 5IP4501FLOCASEYBREED 345 Burnham-Munster 345 flo Dumont-Wilton Center 765 ComEdNIPSCO NIPSCO limit – NIPSCO mitigation required - ** Burr Oak 345/138 XFMR (flo) Burr Oak - Leesburg 345 NIPSCO NIPSCO limit – NIPSCO mitigation required - ** Crete - St John 345 flo Burnham - Munster 345 ComEdNIPSCO NIPSCO limit – NIPSCO mitigation required - ** NIPSCO limit – NIPSCO mitigation required - ** - ** n4116 0.145 16 17 18 19 Crete-St Johns Tap 345 kV l/o Dumont-Wilton Center 765 kV line NIPSCO NIPSCO limit – NIPSCO mitigation required 20 DuneAcres-MicCty1 138kV l/o WltnCntr-Dumont 765+Pwrtn 5/Joliet 7 (SPS) ComEd 21 East Frankfort-Goodings Grove (11602) 345 kV line Upgrade station conductor at East Frankfort and Goodings Grove EUGENE 345 KV EUGBUN1 AEPAMIL AMIL limit – AMIL mitigation required - ** EUGENE 345 KV EUGCAY1 Holland-Neoga 345 l/o Newton-Casey 345 MICHIGA2138 KV LAPMIC1 Michigan City-Laporte 138kV (flo) Wilton Center 765kV AEP-DEI DEI Limit – DEI mitigation required - ** AMIL AMIL limit – AMIL mitigation required NIPSCO limit – NIPSCO mitigation required NIPSCO limit – NIPSCO mitigation required - ** - ** - ** NEWCARLI138 KV NEWTRA1 AEPNIPSCO n4109 0.004 22 23 24 25 26 NIPSCOAEP NIPSCOAEP 27 AMIL 28 Prairie State-W Mt Vernon 345 kV l/o St FrancisLutesville 345 kV AMIL 29 PrairieState_WestMtVermon _FLO_CoffeenRoxford345 Sag study required if normal rating needs fixed, rebuild required AMIL limit – AMIL mitigation required AMIL limit – AMIL mitigation required 1 - ** - ** © PJM Interconnection 2014. All rights reserved. 4 PJMDOCS-#767311-v1-X4-036_SIS_Report.DOC Item 30 31 32 33 34 Limiting Constraint Rising 345/138 XFMR 1 (flo) Clinton - Brokaw 345kV Rising_XFMR_TR1_FLO_K incaid_Latham_BlueMound3 45 Roxana-Praxair 138 kV l/o Gary Ave-Sheffield 345 kV Roxana-Praxair 138 kV l/o Roxana-Mitchell Yard 138 kV State Line-Wolf Lake 138 flo Wilton Center-Dumont 765 Stillwell_Dumont345_flo_W iltonCenter_Dumont765 PJM Network Upgrade Number - Estimated Cost ($M) ** AMIL limit – AMIL mitigation required - ** NIPSCO limit – NIPSCO mitigation required NIPSCO limit – NIPSCO mitigation required - ** - ** TO AMIL Estimated mitigation AMIL limit – AMIL mitigation required AMIL NIPSCO NIPSCO ComEdNIPSCO Replace ComEd circuit breaker at State Line raises the rating to 561. n4118 1.2 NIPSCOAEP Sag study required if normal rating needs to be fixed, rebuild required n4111 0.0344 9 35 Total estimated costs: $25.7334M Notes: Detailed Engineering & Construction Estimates TBD during Facility Study Estimates for time required to construct the reinforcements will be identified during the Facilities Study The above estimates do not include 1) tax gross-up, 2) Real estate and permitting costs. The total estimated cost listed above includes only the sag study cost for Items 27 and 35. Should the sag studies determine that further mitigation is needed, the costs will increase up to the estimate provided for rebuilding the lines. This could add up to another $10M on top of the total estimated costs listed above. ** - All MISO mitigations and cost estimates will be provided as a part of the Facilities Study per PJM-MISO JOA © PJM Interconnection 2014. All rights reserved. 5 PJMDOCS-#767311-v1-X4-036_SIS_Report.DOC
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