TABLE A DUKE ENERGY PROGRESS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 SUMMER PEAK - WS1 Element Contingency Potential Issue Potential Solution ($2013) Marion-Dillon Tap 115 kV Line 1 (Weatherspoon Plant-Marion) Brunswick 1 Gd (TRM) Whiteville-Brun EMC Chadbourn Peacock and Whiteville-Industrial Tap 230 kV Lines Loading (90.0 %) Existing Operating Procedure [2032] Opens Weatherspoon Terminal TABLE B DUKE ENERGY PROGRESS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 SUMMER PEAK - WS2 Element Contingency Potential Issue Potential Solution ($2013)
Florence-Latta SS 230 kV Line 1 Brunswick 1 Gd (TRM) Marion-Marion (SCPSA) 230 kV Lines 1 and 2 Loading (91.4 %) Construct Florence-Marion 230 kV Line [2026] TABLE D DUKE ENERGY PROGRESS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 SHOULDER - WS1 Element Contingency Potential Issue Potential Solution ($2013) No Issues Found - - - TABLE E DUKE ENERGY PROGRESS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 SHOULDER - WS2
Element Contingency Potential Issue Potential Solution ($2013) Ind057-Ind059 230 kV Line 1 (Sutton-Sutton North) Robinson 2 Gd (TRM) Lee-Mt Olive 230 kV and Lee-Friendship 115kV Lines Loading (110.5 %) Construct North 230 kV Line 2 [New Project - 2024] Wallace-Ind056 230 kV Line 1 (Sutton North-Wallace) Cumberland-Wake 500 kV Line 1 Loading (103.5 %) Construct North 230 kV Line 2 [New Project - 2024] Sutton North-Ind036 230 kV Line 1 (Jacksonville-Sutton North) Cumberland-Wake 500 kV Line 1 Loading (101.2 %) Construct North 230 kV Line 2 [New Project - 2024] Delco-Four County EMC Kelly 230 kV Line 1 (Cumberland-Delco) Cumberland-Wake 500 kV Line 1 Loading (93.1 %) Construct North 230 kV Line 2 [New Project - 2024] TABLE E (continued) DUKE ENERGY PROGRESS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 SHOULDER - WS2
Element Contingency Potential Issue Potential Solution ($2013) Warsaw Tap-Four County EMC Blind Bridge 230 kV Line 1 (Clinton-Wallace) Cumberland-Wake 500 kV Line 1 Loading (90.6 %) Construct North 230 kV Line 2 [New Project - 2024] TABLE F DUKE ENERGY PROGRESS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 SHOULDER - WS3 Element Contingency Potential Issue Potential Solution ($2013) No Issues Found - - -
Element Contingency Potential Issue Potential Solution ($2013) No Issues Found - - - TABLE K DUKE ENERGY CAROLINAS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 SUMMER PEAK - WS2 Element Contingency Potential Issue Potential Solution ($2013) Lee-Toxaway 100 kV Lines 1 and 2 (Toxaway) Lee 3 Gm Central-Lee Black and White 100 kV Lines 1 and 2 (Central) Loading (97.3 %) 5% Reactors on Fiber 100 kV Lines [2026] Accelerated 20 Years $1,415,000 (Full Cost)
Tiger-BMW Delivery 1 Tap White 100 kV Line 1 (Taylors) Lee 3 Gm Tiger-East Greenville Black 100 kV Line 1 (Taylors) Loading (96.0 %) 2.68 miles 477 ACSR Reconductor [2027] Accelerated 4 Years $370,000 Central 230/100 kV Transformer 1 Lee 3 Gm Central 230/100 kV Transformer 3 Loading (101.1 %) New Central Transformer Capacity [2025] Accelerated 3 Years $520,000 TABLE L DUKE ENERGY CAROLINAS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 SUMMER PEAK - WS3 Element Contingency Potential Issue Potential Solution ($2013) Lee-Toxaway 100 kV Lines 1 and 2 (Toxaway) Lee 3 Gm Central-Lee Black and White 100 kV Lines 1 and 2 (Central) Loading (97.7 %) 5% Reactors on Fiber 100 kV Lines [2026] Accelerated 20 Years $1,415,000 (Full Cost)
Bush River-Laurens EC 30 White 100 kV Line 1 (Clinton) Lee 3 Gm Bush River-Clinton-Laurens Black 100 kV Line with Clinton Tie Throwover (Clinton) Loading (98.3 %) 12.99 miles 2/0 Cu Reconductor [2026] Accelerated 19 Years $7,085,000 (Full Cost) Anderson-Toxaway 100 kV Line 2/1 (Fiber) Lee 3 Gm Anderson-Toxaway 100 kV Line 1/2 (Fiber) Loading (98.3 %) 5% Reactors on Fiber 100 kV Lines [2033] Accelerated 12 Years $804,000 (Full Cost) Shady Grove 230/100 kV Transformer 1 Lee 3 Gm Shady Grove 230/100 kV Transformer 2 Loading (92.0 %) New Shady Grove Transformer Capacity [2032] Accelerated 8 Years $1,464,000 (Full Cost) TABLE L (continued) DUKE ENERGY CAROLINAS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 SUMMER PEAK - WS3 Element Contingency Potential Issue Potential Solution ($2013) Greenville-North Greenville White 100 kV Line 1 (Verner) Lee 3 Gm Greenville-North Greenville Black 100 kV Line 2 (Verner) Loading (94.9 %) 2.15 miles 954 ACSR Reconductor [2028] Accelerated 5 Years $413,000
Tiger-BMW Delivery 1 Tap White 100 kV Line 1 (Taylors) Lee 3 Gm Tiger-East Greenville Black 100 kV Line 1 (Taylors) Loading (95.8 %) 2.68 miles 477 ACSR Reconductor [2027] Accelerated 4 Years $370,000 Central 230/100 kV Transformer 1 Lee 3 Gm Central 230/100 kV Transformer 3 Loading (100.9 %) New Central Transformer Capacity [2025] Accelerated 3 Years $520,000 Monroe-Roughedge-Mini Ranch White 100 kV Line 1 (Monroe) Harris Gd (TRM) Morning Star 230/100 kV Transformer and Morning Star-Newport 230 kV Line 1 (Sandy Ridge) Loading (101.9 %) 14.71 miles 2/0 Cu Reconductor [2024] Accelerated 3 Years $1,871,000 TABLE M DUKE ENERGY CAROLINAS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 SHOULDER - WS1 Element Contingency Potential Issue Potential Solution ($2013) High Rock-Tuckertown 100 kV Line (Yadkin Facility) Belews Creek 1 Gm Woodleaf-Godbey Garden 500 kV Line (Godbey) Loading (104.9 %) Existing Operating Procedure [2024] Accelerated 2 Years
Badin-Tuckertown 100 kV Line (Yadkin Facility) Belews Creek 1 Gm Woodleaf-Godbey Garden 500 kV Line (Godbey) Loading (93.3 %) Existing Operating Procedure [2029] Accelerated 4 Years Lawsons Fork-Pinewood B/W 100 kV Line 1 (Pinewood) Oconee 1 Gm Lawsons Fork- West Spartanburg W/B 100 kV Line 1 (Pinewood) Loading (91.1 %) 1.08 miles 477 ACSR Reconductor [2030] Accelerated 4 Years $125,000 TABLE N DUKE ENERGY CAROLINAS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 SHOULDER - WS2 Element Contingency Potential Issue Potential Solution ($2013) High Rock-Tuckertown 100 kV Line (Yadkin Facility) Belews Creek 1 Gm Woodleaf-Godbey Garden 500 kV Line (Godbey) Loading (102.5 %) Existing Operating Procedure [2024] Accelerated 2 Years
Allen 230/100 kV Transformer 6 Allen 5 Gm Allen 230/100 kV Transformer 2 Loading (90.1 %) New Allen Transformer Capacity [2032] Accelerated 10 Years $1,464,000 (Full Cost) McGuire-Riverbend B/W 230 kV Lines 1/2 (Norman) Cliffside 5 Gm McGuire-Riverbend W/B 230 kV Lines 2/1 (Norman) Loading (91.9 %) 5.61 miles 1272 ACSR Reconductor [2030] Accelerated 5 Years $1,267,000 TABLE O DUKE ENERGY CAROLINAS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 SHOULDER - WS3 Element Contingency Potential Issue Potential Solution ($2013) High Rock-Tuckertown 100 kV Line (Yadkin Facility) Belews Creek 1 Gm Woodleaf-Godbey Garden 500 kV Line (Godbey) Loading (107.6 %) Existing Operating Procedure [2024] Accelerated 2 Years
Badin-Tuckertown 100 kV Line (Yadkin Facility) Belews Creek 1 Gm Woodleaf-Godbey Garden 500 kV Line (Godbey) Loading (95.7 %) Existing Operating Procedure [2027] Accelerated 6 Years Great Falls-Wateree B/W 100 kV Lines 1/2 (Wateree) Fishing Creek Gm Great Falls-Wateree W/B 100 kV Lines 2/1 (Wateree) Loading (124.7 %) Existing Operating Procedure [2024] Accelerated 27 Years Bush River-Laurens EC 30 White 100 kV Line 1 (Clinton) Oconee 1 Gm Bush River-Clinton-Laurens Black 100 kV Line with Clinton Tie Throwover (Clinton) Loading (101.4 %) 19.78 miles 2/0 Cu Reconductor [2035] Accelerated 23 Years $5,116,000 (Full Cost) TABLE O (continued) DUKE ENERGY CAROLINAS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 SHOULDER - WS3 Element Contingency Potential Issue Potential Solution ($2013) Monroe-Roughedge-Mini Ranch White 100 kV Line 1 (Monroe) Harris Gd (TRM) Morning Star 230/100 kV Transformer and Morning Star-Newport 230 kV Line 1 (Sandy Ridge) Loading (97.4 %) 14.71 miles 2/0 Cu Reconductor [2026] Accelerated 8 Years $3,854,000
Mini Ranch-Lancaster-Red Rose White 100 kV Line 1 (Monroe) Harris Gd (TRM) Morning Star 230/100 kV Transformer and Morning Star-Newport 230 kV Line 1 (Sandy Ridge) Loading (110.8 %) 8.94 miles 2/0 Cu Reconductor [2024] Accelerated 1 Year $402,000 TABLE P DUKE ENERGY CAROLINAS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 WINTER PEAK - WS1 Element Contingency Potential Issue Potential Solution ($2013) No Issues Found - - - TABLE Q DUKE ENERGY CAROLINAS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 WINTER PEAK - WS2
Element Contingency Potential Issue Potential Solution ($2013) No Issues Found - - - TABLE R DUKE ENERGY CAROLINAS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 WINTER PEAK - WS3 Element Contingency Potential Issue Potential Solution ($2013) No Issues Found - - -
TABLE X SOUTH CAROLINA ELECTRIC AND GAS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 SHOULDER - WS3 Element Contingency Potential Issue Potential Solution ($2013) No Issues Found - - - TABLE Y SOUTH CAROLINA ELECTRIC AND GAS SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 WINTER PEAK - WS1 Element Contingency Potential Issue Potential Solution ($2013)
Element Contingency Potential Issue Potential Solution ($2013) No Issues Found - - - TABLE AB SOUTH CAROLINA PUBLIC SERVICE AUTHORITY SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 SUMMER PEAK - WS1 Element Contingency Potential Issue Potential Solution ($2013) Georgetown-Campfield 115 kV Line Base Case Winyah-Campfield 230 kV Line Loading (95.0 %) Existing Operating Procedure [2024] Open Winyah 230/115 kV Transformer
TABLE AC SOUTH CAROLINA PUBLIC SERVICE AUTHORITY SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 SUMMER PEAK - WS2 Element Contingency Potential Issue Potential Solution ($2013) Georgetown-Campfield 115 kV Line Base Case Winyah-Campfield 230 kV Line Loading (107.0 %) Existing Operating Procedure [2024] Open Winyah 230/115 kV Transformer Kingstree-Hemingway 230 kV Line Base Case Marion-Red Bluff 230 kV Line Loading (93.0 %) Kingstree-Hemingway 230 kV Line 2 [New Project 2024] $33,000,000
TABLE AJ SOUTH CAROLINA PUBLIC SERVICE AUTHORITY SUMMARY OF POTENTIAL RELIABILITY ISSUES 2024 WINTER PEAK - WS3 Element Contingency Potential Issue Potential Solution ($2013) Red Bluff 230/115 kV Transformers Base Case Red Bluff-Carolina Forest 230 kV Line Loading (113.0 %) Red Bluff-Carolina Forest 230 kV Line 2 [New Project 2024] $15,200,000