-Primary impact restrictions may be necessary
TGP - Outage Impact Report
-Major impact restrictions may be necessary
Seven Day Forecast (updated 10/16/25)
-Minor impact restrictions may be necessary depending on flow conditions
-Little to no impact, though minor outages may cause incremental reductions
Station / Seg
Est Nominal
Operating Capacity (Thousand Dth)
Monday
(10/20)
Tuesday
(10/21)
Wednesday
(10/22)
Thursday
(10/23)
Friday
(10/24)
Saturday
(10/25)
Sunday
(10/26)
Primary Outage(s) that may Impact Throughput
Est. Operational Capacity (Operational Impact) - Thousand Dth
Station 409
(Donna Line) (segment 490 FH)
564
Station 1
(segment 101 BH)
400
225
(175)
MLV 400-2 to MLV 401-2: Anomaly Remediation (10/13/2025 - 10/24/2025)
Station 9
(segment 109 BH)
1,028
845
(183)
Sta 11A: Unit 1A - Safety Devices (10/20/2025 - 10/22/2025)
Station 25
(segment 125 FH)
714
700
(14)
Sta 25: Unit 1C - VFD Replacement (7/16/2025 - 10/31/2026)
Station 40 South
(segment 132 FH)
912
595
(317)
(512)
MLV 32-3D to MLV 40-3S: Pig Runs - Maintenance (10/21/2025) Sta.40 Natchitoches: HP Tie-In (10/16/2025 - 10/21/2025)
Station 47
(segment 143 FH)
1,226
895
(331)
885
(341)
1220
(6)
MLV 47-1A to MLV 48-1: Class Change (9/1/2025 - 12/31/2025) MLV 47-1AT to MLV 49-1: Anomaly Remediation (1/6/2025 - 10/31/2025)
MLV 49-1 to MLV 50-1: Anomaly Remediation (3/4/2025 - 10/31/2025) MLV 54-1D TO MLV 63-1S: Pig Runs - Cleaning/Guage Tool 10/21/25 (10/21/2025)
MLV 54-1D TO MLV 63-1S: Pig Runs - Ultra EMAT 10/23/25 (10/23/2025)
Sta 47: Unit 1D - Flush & Clean Cooling Systems (10/20/2025 - 10/24/2025) Sta 47: Unit 2D - Flush & Clean Cooling Systems (10/20/2025 - 10/24/2025) Sta 54: Unit 6B - Power Overhaul (10/1/2025 - 11/24/2025)
Sta 54: Unit 8B - Power Overhaul (10/1/2025 - 11/24/2025)
Station 63
(segment 163 FH)
1,233
1065
(168)
1068
(165)
MLV 64-2 to MLV 65-2: Immediate Anomaly Remediation (10/8/2025 - 11/15/2025)
MLV 67-2 to MLV 68-2: Immediate Anomaly Remediation (10/2/2025 - 10/22/2025)
MLV 83-3 to MLV 83-3B: Install Backpressure Regulator (10/16/2025 - 10/31/2025)
MLV 84-4 to MLV 85-4: Class Change Pipe Replacement (9/26/2025 -
10/27/2025)
Station 823
(segment 823 BH)
686
Station 834
(segment 834 BH)
679
670
(9)
Sta 834: Unit 6A - Overhaul (3/3/2025 - 11/3/2025)
Station 534 South of Pool (segment 530 BH)
1,798
1450
(348)
Sta 530: Unit 1A - Bearings (8/25/2025 - 11/28/2025) Sta 530: Unit 2A - Bearings (8/26/2025 - 11/14/2025)
Sta 530: Unit 3A - Crankshaft Replacement (6/9/2025 - 12/31/2026) Sta 530: Unit 4A - Piston (8/25/2025 - 10/24/2025)
Sta 530: Unit 5A - Top-End Overhaul (6/9/2025 - 12/31/2026) Sta 530: Unit 6A - Bearings (10/6/2025 - 11/28/2025)
Sta 530: Unit 7A - Bearings (10/6/2025 - 11/28/2025) Sta 530: Unit 8A - Power Cylinders (9/23/2025 - 10/24/2025)
Sta 534: Unit 6A - Piston Liner & Unloader Replacements (3/25/2025 - 12/5/2025)
Sta 534: Unit 7A - Piston / Liner (5/20/2025 - 12/5/2025)
Station 542
(segment 539 BH)
1,719
1600
(119)
(874)
MLV 540-2 to MLV 540-2A: Shallow Pipe Lowering (10/23/2025 - 10/31/2025) MLV 541-1 to MLV 541-1A: Anomaly Remediation (M) (10/14/2025 - 10/24/2025)
MLV 548
(segment 542 BH)
1,597
1375
(222)
Sta 546: Unit 4A - Engine and Compressor Overhaul (10/18/2025 - 11/26/2025)
Sta 546: Unit 7A - Metal in Oil (7/14/2025 - 10/31/2025)
Station 860
(segment 548 BH)
1,516
1500
(16)
Sta 550: Unit 2A - Compressor Overhaul (8/25/2025 - 12/5/2025)
Sta. 555: Unit 3A - Flywheel Belt Tensioner Install (10/20/2025 - 10/22/2025)
Station 860 North (Segment 860
BH)
1,793
1780
(13)
Sta 860: Unit 1A - Aftercooler Jacket Water Inspection (6/17/2024 - 12/31/2025)
Station 110
(segment 187 BH)
(south thru Kentucky)
2,645
2325
(320)
1805
(840)
2460
(185)
2385
(260)
MLV 109-2 to 109-2A: Special Permit Pipe Replacement (10/16/2025 - 10/31/2025)
MLV 109-3 to MLV 109-3A: Special Permit Pipe Replacement (10/16/2025 - 10/31/2025)
MLV 867-2 to MLV 868-2: Anomaly Remediation (10/4/2025 - 10/31/2025) MLV 871-2A to MLV 872-2: Anomaly Remediation (10/26/2025 - 11/26/2025) MLV 871-2L to MLV 871-2A: Anomaly Remediation (10/26/2025 - 11/26/2025) MLV 872-2 to MLV 873-2: Anomaly Remediation (10/26/2025 - 11/26/2025) MLV 873-2 to MLV 873-2A: Anomaly Remediation (10/26/2025 - 11/26/2025) MLV 97-4 to MLV 98-4: Anomaly Remediation (9/22/2025 - 10/31/2025)
Sta 106: Unit 1C - Replace Power Cylinder Bearing #7 (4/14/2025 - 10/26/2025)
Sta 110 Morehead: Unit Inspections (10/20/2025 - 10/24/2025) Sta 87 Portland: Annual ESD Test (10/23/2025 - 10/24/2025) Sta 87: Unit 3D - Engine Maintenace (10/20/2025 - 10/23/2025) Sta 871: Unit 1A - Turbo Replacement (10/9/2025 - 10/23/2025)
Sta 871: Unit 3A - Engine Crankshaft Inspection (8/22/2025 - 12/31/2025)
Station 114
(segment 114 BH)
920
(220)
Sta 114: Installation of Unit Valves (10/24/2025 - 10/25/2025)
Station 204
(Segment 204 BH)
1,827
1761
(66)
1796
(31)
1797
(30)
MLV 208-2 to MLV 209-2: Anomaly Remediation (10/17/2025 - 10/24/2025) MLV 213-2A to MLV 214-2: Special Permit Replacement (10/9/2025 - 11/19/2025)
Sta 209: Unit 4A - Packing & Starting Air Valves (10/20/2025 - 10/23/2025)
Station 245
(segment 245 FH)
997
Station 249
(segment 249 FH)
1,089
942
(147)
Sta 249: Unit 1A - Aftercooler Upgrade (9/29/2025 - 10/31/2025)
Station 254
(segment 256 FH)
1,213
1055
(158)
Sta 254: Unit 4A - Replace Power Cylinder Head (5/16/2025 - 11/1/2025) Sta. 254: Bldg A Stack Replacement and Unit Upgrades (7/14/2025 -
11/1/2025)
Station 261 Discharge East (segment 261
FH)
941
Station 267 South (segment 266
469
312
(157)
Sta. 267: Bldg A Controls Upgrade (9/2/2025 - 11/26/2025)
Station 307
(segment 307 BH)
1,150
1105
(45)
955
(195)
Sta 307: Unit 1A - Engine Maintenance (10/20/2025 - 10/24/2025) Sta 310: Unit 1A - Water Wash & Borescope (10/21/2025 - 10/22/2025)
Station 315
(segment 315 BH)
1,854
MLV 324
(segment 324 FH)
1,767
1510
(257)
Sta 325: Unit 3A - Engine ESD Valve (10/2/2025 - 10/20/2025) Sta 325: Units 4A - Vibration (9/8/2025 - 10/20/2025)
Station 405 HC Line (segment 299
803
This document is updated on a weekly basis and outage schedules/impacts are subject to change as the week progresses.
Dates posted on DART should be deemed correct in the event of conflicts between DART posted dates and dates on this report.
The impacts sheet are based on steady-state hydraulic models assuming recent operating flows, conditions, and various unit outages.
October 2025 (updated 10/16/25)
Station # / Lateral
Est Nominal Operating Capacity (Thousand Dth)
Week 1
(9/29 - 10/5)
Week 2
(10/6 - 10/12)
Week 3
(10/13 - 10/19)
Week 4
(10/20 - 10/26)
Week 5
(10/27 - 11/2)
Primary Outage(s)
Station 409 (Donna Line) (segment 490
350
(50)
MLV 401-2 to MLV 402-2: Anomaly Remediation (10/27/2025 - 10/31/2025)
747
MLV 32-2D TO MLV 40-2S: Pig Runs - Maintenance (10/28/2025)
Station 40 KN South (segment 501
268
100
Sta 500-1 to Sta 823 (MLV 507-1): Pig Run - Maintenance (M) (10/29/2025)
755
(471)
MLV 47-1A to MLV 48-1: Class Change (9/1/2025 - 12/31/2025) MLV 47-1AT to MLV 49-1: Anomaly Remediation (1/6/2025 - 10/31/2025) MLV 47-4A to MLV 48-4: Pipe Replacement (M) (10/27/2025 - 11/7/2025)
MLV 49-1 to MLV 50-1: Anomaly Remediation (3/4/2025 - 10/31/2025) MLV 53-3BR to MLV 54-3BL: HydroTest (10/27/2025 - 11/28/2025)
Sta 54: Unit 6B - Power Overhaul (10/1/2025 - 11/24/2025)
760
(473)
MLV 63-4D to MLV 71-4S: Pig Runs - Caliper / IMU 10/30/25 (10/30/2025) MLV 63-4D to MLV 71-4S: Pig Runs - Cleaning / Gauge 10/28/25 (10/28/2025) MLV 64-2 to MLV 65-2: Immediate Anomaly Remediation (10/8/2025 - 11/15/2025)
MLV 84-4 to MLV 85-4: Class Change Pipe Replacement (9/26/2025 - 10/27/2025)
664
(15)
Sta 530: Unit 3A - Crankshaft Replacement (6/9/2025 - 12/31/2026) Sta 530: Unit 5A - Top-End Overhaul (6/9/2025 - 12/31/2026)
Sta 530: Unit 6A - Bearings (10/6/2025 - 11/28/2025) Sta 530: Unit 7A - Bearings (10/6/2025 - 11/28/2025)
MLV 540-2 to MLV 540-2A: Shallow Pipe Lowering (10/23/2025 - 10/31/2025)
Sta 546: Unit 4A - Engine and Compressor Overhaul (10/18/2025 - 11/26/2025) Sta 546: Unit 7A - Metal in Oil (7/14/2025 - 10/31/2025)
1245
(271)
Sta 550 Hamilton: Annual ESD Test & Maintenance (10/27/2025 - 10/31/2025)
Sta 550: A building - Replace SLC 500 Remote PLC (10/27/2025 - 10/31/2025) Sta 550: Unit 1B - Safety Device Checks (10/28/2025)
MLV 861-1 to MLV 862-1: Install New 30" Valve 861-1A (10/29/2025 - 11/3/2025)
2300
(345)
MLV 108-2 to MLV 109-2: Special Permit Pipe Replacement (M) (11/1/2025 -
11/30/2025)
MLV 867-2 to MLV 868-2: Anomaly Remediation (10/4/2025 - 10/31/2025) MLV 871-2A to MLV 872-2: Anomaly Remediation (10/26/2025 - 11/26/2025) MLV 871-2L to MLV 871-2A: Anomaly Remediation (10/26/2025 - 11/26/2025) MLV 872-2 to MLV 873-2: Anomaly Remediation (10/26/2025 - 11/26/2025) MLV 873-2 to MLV 873-2A: Anomaly Remediation (10/26/2025 - 11/26/2025) MLV 90-3 to MLV 91-3: HDD River Crossing Replacement (10/31/2025 - 11/12/2025)
MLV 97-4 to MLV 98-4: Anomaly Remediation (9/22/2025 - 10/31/2025) Sta 106 Clay City: Upgrade B Building Jacket Water System (10/27/2025 - 11/14/2025)
Sta 87: Unit 2E - Turbocharger Replacement (10/27/2025 - 11/21/2025) Sta 871: Unit 3A - Engine Crankshaft Inspection (8/22/2025 - 12/31/2025)
840
(80)
Sta 114: Unit 1C - Complete Intallation of Unit Valves (10/27/2025) Sta 114: Unit 2C - Complete Installation of Unit Valves (10/29/2025)
Sta 118A Tyler Mountain: Annual ESD Test (10/27/2025 - 10/29/2025)
1371
(456)
MLV 209-4 to MLV 204-4: Pig Runs - Cleaning / Gauge 10/30/25 (10/30/2025) MLV 213-2A to MLV 214-2: Special Permit Replacement (10/9/2025 - 11/19/2025)
Sta 209: Unit 7A - Packing (10/27/2025 - 10/30/2025)
970
(27)
Sta 241: Unit 1A - Engine Maintenance (10/27/2025 - 10/31/2025)
931
(282)
965
Sta 303A: Unit 1A - Water Wash (10/28/2025 - 10/29/2025)
1690
(164)
Sta 315: Unit 2A - Inspect Bleed Duct Line (10/27/2025)
This document is updated on a weekly basis and outage schedules/impacts are subject to change as the week progresses. Dates posted on DART should be deemed correct in the event of conflicts between DART posted dates and dates on this report.
November 2025 (updated 10/16/25)
(11/3 - 11/9)
(11/10 - 11/16)
(11/17 - 11/23)
(11/24 - 11/30)
Station 409A (Alamo) (segment 492
295
145
(150)
MLV 409A-901 to MLV 409A-902: Pig Run - Cleaning 11/18/25 (M) (11/18/2025) MLV 409A-901 to MLV 409A-902: Pig Run - MFL-A 11/19/25 (M) (11/19/2025)
585
438
180
(258)
175
(263)
MLV 403-2 to MLV 404-2: Anomaly Remediation (M) (11/3/2025 - 11/14/2025) MLV 404-2 to MLV 405-2: Anomaly Remediation (M) (11/17/2025 - 11/26/2025)
MLV 4
(segment 101 FH)
1,033
MLV 1-2BL to MLV 1-2A: GCX Expansion Hot Tap/Tie in (M) (11/18/2025 - 11/21/2025)
1,066
Station 17
(segment 117 FH)
1,143
1130
MLV 17-1D to MLV 18-1: Anomaly Remediation (11/3/2025 - 11/21/2025)
1,101
1087
MLV 26-1 Relocation: Highway 59 Widening (11/11/2025 - 12/10/2025) Sta 25: Unit 1C - VFD Replacement (7/16/2025 - 10/31/2026)
1,354
890
(464)
905
(449)
950
(404)
MLV 47-1A to MLV 48-1: Class Change (9/1/2025 - 12/31/2025) MLV 47-3A to MLV 48-3: Pipe Replacement (11/10/2025 - 11/21/2025) MLV 47-4A to MLV 48-4: Pipe Replacement (M) (10/27/2025 - 11/7/2025)
MLV 53-3BR to MLV 54-3BL: HydroTest (10/27/2025 - 11/28/2025)
Sta 54: Unit 6B - Power Overhaul (10/1/2025 - 11/24/2025) Sta 54: Unit 8B - Power Overhaul (10/1/2025 - 11/24/2025)
1,287
810
(477)
1185
(102)
1135
(152)
MLV 63-4D to MLV 71-4S: Pig Runs - EMAT 11/6/25 (11/6/2025) MLV 63-4D to MLV 71-4S: Pig Runs - MFL-C 11/4/25 (11/4/2025)
MLV 65-2 to MLV 66-2: Immediate Anomaly Remediation (11/17/2025 - 11/30/2025)
MLV 66-2 to MLV 67-2: Immediate Anomaly Remediation (11/17/2025 - 11/30/2025)
MLV 71-1D to MLV 77-1A: Pig Re-Runs - MDS 11/12/25 (11/12/2025)
759
(614)
Sta 827 to Sta 823: Pig Run - Maintenance (M) (11/5/2025) Sta 834 to Sta 827: Maintenance Pig (M) (11/5/2025)
Station 827 (Alexandria): Station Recycle Valve (11/4/2025 - 11/6/2025)
733
718
1,632
1285
(347)
1405
(227)
1,905
1865
(40)
Sta 542: Unit 1B - Safety Device Testing (11/10/2025 - 11/14/2025)
1,771
1736
(35)
1,697
785
(912)
1681
MLV 546-1 to MLV 542-1: Pig Runs - Maintenance (11/5/2025) MLV 546-2 to MLV 542-2: Pig Runs - Maintenance (11/6/2025) MLV 546-3 to MLV 544-3: Pig Runs - Maintenance (11/4/2025)
Station 860 North (Segment 860 BH)
2,028
1715
(313)
2015
1925
(103)
MLV 560-1 to MLV 563-1: HDD River Crossing & MLV 561-1 & MLV 562-1
Replacement (11/17/2025 - 11/21/2025)
Sta 860: Unit 1A - Aftercooler Jacket Water Inspection (6/17/2024 - 12/31/2025) Sta. 860: Unit 1C - 4K Turbine Water Wash (11/3/2025 - 11/4/2025)
Sta. 860: Unit 1C - Engine Inspection/Condition Assessment (11/3/2025 - 11/4/2025)
Sta. 860: Unit 2C - 4K Turbine Water Wash (11/5/2025 - 11/6/2025) Sta. 860: Unit 2C - Engine Inspection/Condition Assessment (11/5/2025 -
11/6/2025)
2,775
2055
(720)
2505
(270)
2515
MLV 108-2 to MLV 109-2: Special Permit Pipe Replacement (M) (11/1/2025 - 11/30/2025)
MLV 871-2A to MLV 872-2: Anomaly Remediation (10/26/2025 - 11/26/2025) MLV 871-2L to MLV 871-2A: Anomaly Remediation (10/26/2025 - 11/26/2025) MLV 872-2 to MLV 873-2: Anomaly Remediation (10/26/2025 - 11/26/2025) MLV 873-2 to MLV 873-2A: Anomaly Remediation (10/26/2025 - 11/26/2025) MLV 87-4 to MLV 96-4: Pig Runs - AFD Combo 11/11/25 (M) (11/11/2025)
MLV 87-4 to MLV 96-4: Pig Runs - Caliper 11/6/25 (M) (11/6/2025) MLV 87-4 to MLV 96-4: Pig Runs - Cleaning / Gauge 11/4/25 (M) (11/4/2025)
MLV 87-4 to MLV 96-4: Pig Runs - EMAT 11/13/25 (M) (11/13/2025)
MLV 90-3 to MLV 91-3: HDD River Crossing Replacement (10/31/2025 - 11/12/2025)
Sta 106 Clay City: Upgrade B Building Jacket Water System (10/27/2025 - 11/14/2025)
Sta 87: Unit 2E - Turbocharger Replacement (10/27/2025 - 11/21/2025) Sta 871: Unit 3A - Engine Crankshaft Inspection (8/22/2025 - 12/31/2025) Sta 96: Unit 2D - Compressor Valves (11/10/2025 - 11/14/2025)
948
1,895
1432
(463)
1456
(439)
1419
(476)
MLV 209-4 to MLV 204-4: Pig Runs - Cal & IMU 11/04/25 (11/4/2025) MLV 209-4 to MLV 204-4: Pig Runs - MFL-A 11/06/25 (11/6/2025)
MLV 213-2A to MLV 214-2: Special Permit Replacement (10/9/2025 - 11/19/2025)
MLV 219-4 to MLV 214-4: Pig Run - Cleaning/Gauge 11/11/25 (M) (11/11/2025) MLV 219-4 to MLV 214-4: Pig Run - EMAT 11/20/25 (M) (11/20/2025)
MLV 219-4 to MLV 214-4: Pig Run - IMU/Caliper 11/13/25 (M) (11/13/2025) MLV 219-4 to MLV 214-4: Pig Run - MFL-C 11/18/25 (M) (11/18/2025)
1,063
1,045
Station 266A
(segment 282 FH)
406
370
(36)
Sta 266A: Filter / Separator Changeout (M) (11/4/2025 - 11/5/2025)
503
346
1,202
1145
(57)
Sta 307: Unit 2A - Engine Maintenance (11/3/2025 - 11/7/2025)
1,915
1,885
827
December 2025 (updated 10/16/25)
(12/1 - 12/7)
(12/8 - 12/14)
(12/15 - 12/21)
(12/22 - 12/28)
1075
(26)
MLV 26-1 Relocation: Highway 59 Widening (11/11/2025 - 12/10/2025) MLV 26-1 to MLV 27-1: Install Road Casing (12/6/2025 - 1/19/2026) MLV 26-2 Relocation: Highway 59 Widening (12/11/2025 - 1/19/2026)
(134)
1349
(5)
MLV 47-1A to MLV 48-1: Class Change (9/1/2025 - 12/31/2025) MLV 47-2A to MLV 48-2: Pipe Replacement (M) (12/1/2025 - 12/10/2025)
Station 847
(segment 847 BH)
338
200
(138)
MLV 856-1 to MLV 860-1: Pig Runs - Cal / IMU 12/9/25 (12/9/2025)
MLV 856-1 to MLV 860-1: Pig Runs - Cleaning / Gauge 12/4/25 (12/4/2025) MLV 856-1 to MLV 860-1: Pig Runs - MFL-C 12/11/25 (12/11/2025)
1485
1610
(22)
Sta 550: Unit 2A - Compressor Overhaul (8/25/2025 - 12/5/2025) Sta 550: Unit 3A - Turbocharger Exchange (12/8/2025 - 12/19/2025)
(south thru
Kentucky)
2645
(130)
1722
(173)
MLV 204-2 to MLV 200-2: Pig Runs - EMAT 12/18/25 (M) (12/18/2025) MLV 204-2 to MLV 200-2: Pig Runs - MFL-C 12/16/25 (M) (12/16/2025)
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