-Primary impact restrictions may be necessary
TGP - Outage Impact Report
-Major impact restrictions may be necessary
Seven Day Forecast (updated 08/21/25)
-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
(8/25)
Tuesday
(8/26)
Wednesday
(8/27)
Thursday
(8/28)
Friday
(8/29)
Saturday
(8/30)
Sunday
(8/31)
Primary Outage(s) that may Impact Throughput
Est. Operational Capacity (Operational Impact) - Thousand Dth
Station 409 (Donna Line) (segment 490
FH)
564
MLV 406
(segment 406 BH)
456
396
(60)
MLV 406-1 to MLV 407-1: Immediate Anomaly Remediation (8/18/2025 - 9/5/2025)
Station 1
(segment 101 BH)
400
Station 9
(segment 109 BH)
1,028
Station 25
(segment 125 FH)
714
700
(14)
MLV 25-1 to MLV 26-1 Relocation: Highway 105 Widening (8/18/2025 - 9/6/2025)
Sta 25: Unit 1C - VFD Replacement (7/16/2025 - 10/31/2026)
Station 40 South
(segment 132 FH)
912
562
(350)
Sta 40: HP Replacement - Bldg C Mod (8/18/2025 - 8/25/2025) Sta 40: HP Replacement - Unit C Unit Mod (8/26/2025 - 8/31/2025)
Station 47
(segment 143 FH)
1,177
1170
(7)
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 53-3BR to MLV 54-3BL: HydroTest (8/25/2025 - 10/4/2025)
Sta 54: Unit 6B - Power Overhaul (8/18/2025 - 9/5/2025)
Sta 54: Unit 8B - Power Overhaul (8/18/2025 - 9/5/2025)
Station 63
(segment 163 FH)
1,233
660
(573)
Sta 63 Batesville: Annual ESD Test (8/26/2025 - 8/27/2025)
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
1570
(228)
Sta 530: Unit 3A - Crankshaft Replacement (6/9/2025 - 12/31/2025) Sta 530: Unit 5A - Top-End Overhaul (6/9/2025 - 12/31/2025)
Sta 534: Unit 6A - Piston Liner & Unloader Replacements (3/25/2025 - 9/12/2025)
Sta 534: Unit 7A - Startup Sequence (5/20/2025 - 9/26/2025)
Station 542
(segment 539 BH)
1,756
1565
(191)
MLV 539-1 to MLV 540-1: Shallow Pipe Lowering (8/18/2025 - 8/30/2025)
MLV 548
(segment 542 BH)
1,597
1375
(222)
Sta 546: Unit 1A - Engine and Compressor Overhaul (8/11/2025 - 9/15/2025) Sta 546: Unit 7A - Metal in Oil (7/14/2025 - 8/29/2025)
Station 860
(segment 548 BH)
1,516
1500
(16)
Sta 550: Unit 2A - Compressor Overhaul (8/25/2025 - 10/17/2025) Sta 555: Unit 2A - Oil Seal (8/4/2025 - 9/5/2025)
Station 860 North (Segment 860 BH)
1,793
1705
(88)
MLV 560-2 to MLV 561-2: Class Change Pipe Replacement (6/9/2025 - 9/16/2025)
Sta 860: Unit 1A - Aftercooler Jacket Water Inspection (6/17/2024 -
12/31/2025)
Station 110
(segment 187 BH)
(south thru Kentucky)
2,645
2315
(330)
2510
(135)
MLV 101-5 to MLV 102-5: Class Change Pipe Replacement (7/30/2025 - 8/30/2025)
MLV 109-5 to MLV 109-5A: Class Change Pipe Replacement (8/11/2025 - 8/25/2025)
MLV 869-1 to MLV 870-1: Anomaly Remediation (8/22/2025 - 9/4/2025) MLV 873-2 to MLV 873-2A: Anomaly Remediation (8/25/2025 - 10/4/2025) MLV 93-3 to MLV 94-3: HDD River Crossing Replacement (7/14/2025 - 9/13/2025)
MLV 96-4 to MLV 98-4: Immediate Anomaly Remediation (7/9/2025 - 9/12/2025)
Sta 106: Unit 1C - Replace Power Cylinder Bearing #7 (4/14/2025 - 9/26/2025) Sta 106: Unit 2D - Solar 4K/8K Inspection (8/26/2025 - 8/28/2025)
Sta 87: Unit 1D - Oil Cooler Cleaning/Repair (8/29/2025 - 9/18/2025) Sta 87: Unit 2D - Oil Cooler Cleaning/Repair (7/30/2025 - 8/28/2025)
Station 114
(segment 114 BH)
920
780
(140)
Sta 119A: Rocky Fork: Unit 1A - 4k Hr Inspection (8/25/2025 - 8/28/2025)
Station 204
(Segment 204 BH)
1,827
1325
(502)
MLV 204-2 to MLV 200-2: Pig Runs - Hard Spot 8/28/25 (M) (8/28/2025) MLV 204-2 to MLV 200-2: Pig Runs - MFL-A 8/26/25 (M) (8/26/2025)
MLV 205-2 to MLV 206-2: Special Permit Replacement (7/16/2025 - 9/1/2025) MLV 214-1 to MLV 209-1: Pig Re-Runs - Cleaning / Gauge 8/26/25 (8/26/2025) MLV 214-1 to MLV 209-1: Pig Re-Runs - EMAT 8/28/25 (8/28/2025)
MLV 216-2 to MLV 216-2A: Class Change Replacement (8/12/2025 - 9/9/2025) Sta 204: Unit 9A - Crankcase Inspection (8/25/2025 - 8/28/2025)
Sta 209: Unit 1A - Power Cylinder (8/18/2025 - 8/29/2025)
Sta 87 to Sta 219: Cumulative Planned/Unplanned Maintenance-204 (8/5/2025 10/19/2025)
Station 219 South (Segment 217 BH)
1,638
1438
(200)
Sta 87 to Sta 219: Cumulative Planned/Unplanned Maintenance-217 (8/4/2025 10/19/2025)
Station 219 to
Station 224
(Segment 219 FH)
540
535
(5)
Sta 219: Unit 5A - Engine Maintenance (8/25/2025 - 8/29/2025)
Station 245
(segment 245 FH)
997
925
(72)
(77)
Sta 241: Unit 1A - Turbo (8/19/2025 - 9/5/2025)
Sta 241: Unit 2B - 2K Maintenance (8/26/2025 - 8/27/2025)
Station 254
(segment 256 FH)
1,213
(293)
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
MLV 263
(segment 261 FH)
875
559
(316)
MLV 263-2 to 264-2: Pipe Replacement (8/21/2025 - 9/12/2025)
Station 307
(segment 307 BH)
1,148
915
(233)
MLV 310-2 to MLV 310-2A: Repair Grease Fitting (8/25/2025 - 8/26/2025)
Station 315
(segment 315 BH)
1,854
Station 317
(segment 317 BH)
1,579
1485
(94)
Sta 319: Units 2C - Turbine Exchange (8/25/2025 - 8/29/2025)
MLV 324
(segment 324 FH)
1,767
Station 405 HC Line (segment 299 FH)
803
(segment 224 FH)
389
200
(189)
Sta 229: Automation Upgrade & Maintenance (8/11/2025 - 9/3/2025)
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.
The impacts sheet are based on steady-state hydraulic models assuming recent operating flows, conditions, and various unit outages.
September 2025 (updated 08/21/25)
Station # / Lateral
Week 1
(9/1 - 9/7)
Week 2
(9/8 - 9/14)
Week 3
(9/15 - 9/21)
Week 4
(9/22 - 9/28)
Primary Outage(s)
Station 409 (Donna Line) (segment 490 FH)
406
(50)
416
(40)
MLV 403-1 to MLV 404-1: Anomaly Remediation (M) (9/22/2025 - 10/10/2025) MLV 405-1 to MLV 406-1: Immediate Anomaly Remediation (9/8/2025 - 9/19/2025)
445
(583)
MLV 17-2S to MLV 9-2D: Pig Runs - Cleaning / Gauge (M) (9/9/2025) MLV 17-2S to MLV 9-2D: Pig Runs - Cleaning Run 2 (M) (9/5/2025) MLV 17-2S to MLV 9-2D: Pig Runs - MFL (M) (9/11/2025)
MLV 17-2S to MLV 9-2D: Pigging Cleaning Run 1 (M) (9/3/2025)
Station 17
(segment 117 FH)
758
753
MLV 17-1D to MLV 20-1A: Pig Run - Cleaning 9/15/25 (9/15/2025)
MLV 17-1D to MLV 20-1A: Pig Run - Gauge 9/16/25 (9/16/2025) MLV 17-1D to MLV 20-1A: Pig Run - MFL-A 9/17/25 (9/17/2025)
565
(149)
MLV 25-3 to MLV 32-3: Pig Run - Maintenance (9/11/2025)
587
(325)
MLV 39-2 to MLV 40-2S: Class Change (9/23/2025 - 10/6/2025) MLV 39-3 to MLV 40-3S: Class Change (9/9/2025 - 9/22/2025)
Carthage Lateral (segment 700 FH)
323
215
(108)
MLV 706-1 to MLV 700-1: Pig Run - Maintenance (M) (9/9/2025)
1,222
1095
(127)
750
(472)
1140
(82)
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 47-3AT to MLV 47-3A: Anomaly Remediation (9/1/2025 - 9/5/2025)
MLV 48-3 to MLV 49-3: Anomaly Remediation (9/1/2025 - 9/5/2025) MLV 49-1 to MLV 50-1: Anomaly Remediation (3/4/2025 - 10/31/2025)
MLV 53-2BREH to MLV 53-2BR: Special Permit Replacement (9/12/2025 - 10/15/2025)
MLV 53-3BR to MLV 54-3BL: HydroTest (8/25/2025 - 10/4/2025)
MLV 54-1D TO MLV 63-1S: Pig Runs - Cleaning / Gauge 9/16/25 (9/16/2025) MLV 54-1D TO MLV 63-1S: Pig Runs - CLP / IMU 9/18/25 (9/18/2025)
MLV 54-1D TO MLV 63-1S: Pig Runs - MFL-C 9/23/25 (9/23/2025) MLV 54-1D TO MLV 63-1S: Pig Runs - MFL-C 9/25/25 (9/25/2025)
Sta 47: Annual ESD Test (9/10/2025)
Sta 54 Greenville: Annual ESD Test & Maintenance (9/8/2025 - 9/11/2025) Sta 54: Unit 6B - Power Overhaul (8/18/2025 - 9/5/2025)
1145
1200
(33)
MLV 83-3B to MLV 84-3: Class Change Pipe Replacement (9/1/2025 - 9/11/2025)
MLV 84-1 to MLV 85-1: Class Change Pipe Replacement (9/15/2025 -
10/4/2025)
515
(171)
Station 827 (Alexandria): Station Recycle Valve (9/9/2025 - 9/11/2025)
Station 847
(segment 847 BH)
284
(69)
MLV 838-1 TO MLV 834-1: Pig Re-Runs - ROSEN EMAT 9/18 (M) (9/18/2025) MLV 838-1 TO MLV 834-1: Pig Runs - Cleaning 9/15 - 9/17 (M) (9/15/2025 - 9/17/2025)
Station 527
(segment 527 BH)
2,392
2380
(12)
MLV 530-1 TO MLV 531-1: Anomaly Remedition (9/22/2025 - 9/27/2025)
1776
(22)
1560
(37)
Sta 546: Unit 1A - Engine and Compressor Overhaul (8/11/2025 - 9/15/2025)
1390
(126)
1275
(241)
1280
(236)
Sta 550: Unit 2A - Compressor Overhaul (8/25/2025 - 10/17/2025)
Sta 555 Collinwood: Annual ESD Test & Maintenance (9/8/2025 - 9/12/2025) Sta 555: Unit 1A - Engine Maintenance (9/1/2025 - 9/5/2025)
Sta 555: Unit 1B - Install New PLC Program (9/22/2025 - 9/26/2025) Sta 555: Unit 1B - Vibration System Upgrade (9/8/2025 - 9/12/2025) Sta 555: Unit 2A - Engine Maintenance (9/1/2025 - 9/5/2025)
Sta 555: Unit 2A - Oil Seal (8/4/2025 - 9/5/2025)
Sta 555: Unit 5A - Engine Maintenance (9/1/2025 - 9/5/2025) Sta 555: Unit 6A - Engine Maintenance (9/1/2025 - 9/5/2025)
1210
1780
(13)
MLV 861-1 to MLV 862-1: Install New 30" Valve 861-1A (9/22/2025 - 10/3/2025)
Sta 563: Unit 1A - Annual Inspection & Safety Device Check (9/11/2025 - 9/14/2025)
Sta 563: Unit 2A - Overhaul Inspection & Safety Device Check (9/8/2025 - 9/11/2025)
Sta 860: Unit 1A - Aftercooler Jacket Water Inspection (6/17/2024 - 12/31/2025)
2290
(355)
2155
(490)
1965
(680)
1950
(695)
MLV 106-1D to MLV 110-7: Make Piggable Valve MLV 107-7, MLV 109-7
Replacements & Adding MLV 109-7A (M) (9/3/2025 - 9/20/2025) MLV 108-3 to MLV 109-3: Special Permit Pipe Replacement (9/24/2025 -
10/15/2025)
MLV 867-2 to MLV 868-2: Anomaly Remediation (9/20/2025 - 10/25/2025) MLV 868-2 to MLV 869-2: Anomaly Remediation (9/15/2025 - 9/20/2025) MLV 869-1 to MLV 870-1: Anomaly Remediation (8/22/2025 - 9/4/2025) MLV 870-2 to MLV 870-2R: Anomaly Remediation (9/9/2025 - 9/14/2025) MLV 871-2A to MLV 872-2: Anomaly Remediation (9/22/2025 - 9/27/2025) MLV 872-2 to MLV 873-2: Anomaly Remediation (9/15/2025 - 9/20/2025) MLV 873-2 to MLV 873-2A: Anomaly Remediation (8/25/2025 - 10/4/2025) MLV 93-3 to MLV 94-3: HDD River Crossing Replacement (7/14/2025 - 9/13/2025)
MLV 96-4 to MLV 98-4: Immediate Anomaly Remediation (7/9/2025 - 9/12/2025) MLV 96-5 to MLV 102-5: Pig Runs - Cleaning / Gauge 9/25/25 (9/25/2025) Sta 106 Clay City: Upgrade B Building Jacket Water System (9/15/2025 -
10/3/2025)
Sta 106: Unit 1D - Solar 4K/8K Inspection (9/22/2025 - 9/26/2025)
Sta 106: Unit 1C - Replace Power Cylinder Bearing #7 (4/14/2025 - 9/26/2025) Sta 87: Unit 1D - Oil Cooler Cleaning/Repair (8/29/2025 - 9/18/2025)
Sta 87: Unit 1E - Turbocharger Replacement (9/2/2025 - 10/10/2025) Sta 871: Unit 1A - 3Q Engine Inspection (9/9/2025)
Sta 871: Unit 2A - 3Q Engine Inspection (9/10/2025) Sta 875: Unit 1A - 4K/8K Inspection (9/9/2025 - 9/11/2025)
Sta 96: Unit 2D - Compressor Valves (9/22/2025 - 9/26/2025)
850
(70)
Sta 118A Tyler Mountain: Annual ESD Test (9/16/2025 - 9/18/2025)
MLV 205-2 to MLV 206-2: Special Permit Replacement (7/16/2025 - 9/1/2025) MLV 213-2A to MLV 214-2: Special Permit Replacement (9/23/2025 - 10/31/2025)
MLV 216-2 to MLV 216-2A: Class Change Replacement (8/12/2025 - 9/9/2025) Sta 204: Scrubber Filter (9/22/2025 - 9/24/2025)
Sta 204: Unit 10A - Turbo Housing (9/8/2025 - 9/11/2025) Sta 204: Unit 1A - Turbo Housing (9/1/2025 - 9/2/2025) Sta 204: Unit 3A - Turbo Housing (9/15/2025 - 9/16/2025)
Sta 209 Cambridge: Scrubber Filter (9/25/2025 - 9/27/2025) Sta 209: Unit 12A - Install Barring Jack (9/8/2025 - 9/11/2025)
Sta 209: Unit 5A - Crankcase Inspection (9/22/2025 - 9/25/2025) Sta 209: Unit 7A - Install F/W Turbo (9/15/2025 - 9/18/2025)
Sta 87 to Sta 219: Cumulative Planned/Unplanned Maintenance-204 (8/5/2025 - 10/19/2025)
Station 219 South (Segment 217
BH)
Sta 87 to Sta 219: Cumulative Planned/Unplanned Maintenance-217 (8/4/2025 -
10/19/2025)
840
(157)
855
(142)
Sta 241: Unit 3A - C3 Cooper Upgrade (9/8/2025 - 9/27/2025) Sta 245: Unit 1C - Engine Exchange (9/8/2025 - 9/12/2025)
Sta 249: Unit 2B - Replace Compressor Rod Packing (9/2/2025 - 9/4/2025)
710
(503)
MLV 254-1 to MLV 261-1: Pig Run - Maintenance (9/23/2025) MLV 254-2 to MLV 261-2: Pig Run - Maintenance (9/24/2025) MLV 254-3 to MLV 258-3: Pig Run - Maintenance (9/25/2025)
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)
N Hampton Lat (segment 280 FH)
40
30
(10)
Sta 260A Southwick: Annual ESD Test (9/23/2025)
590
(351)
585
(356)
Sta 261 Agawam: Annual ESD Test (M) (9/16/2025 - 9/18/2025) Sta 264 Charlton: Annual ESD Test (9/25/2025)
Station 267 South (segment 266 FH)
469
312
Sta. 267: Bldg A Controls Upgrade (9/2/2025 - 11/26/2025)
Fitchburg Lat to Gloucester (segment 268 FH)
202
185
(17)
140
(62)
MLV 267-1A to MLV 268-1: Anomaly Remediation (9/15/2025 - 9/20/2025) MLV 270-1A to MLV 270-101.1R: Anomaly Remediation (9/9/2025 - 9/14/2025)
760
(388)
960
(188)
Sta 307 (Pigeon ): Annual ESD Test (9/22/2025 - 9/26/2025) Sta 307: Unit 2A - Engine Maintenace (9/8/2025 - 9/12/2025) Sta 307: Unit 3A - Engine Maintenace (9/8/2025 - 9/12/2025)
Sta 307: Unit 6A - Protective Device Checks (9/22/2025 - 9/26/2025) Station 310 Smethport: Annual ESD Test (9/10/2025)
Station 313 Discharge (segment 399 FH)
806
408
(398)
Sta 313: Unit 1C - Capacitor Replacement (9/22/2025 - 9/26/2025)
1555
(24)
1550
(29)
MLV 317-1 to MLV 318-1: Hot Tap for New Meter (Meter: Port Royal PIN: 57162)
(M) (9/16/2025 - 9/17/2025)
MLV 317-2 to MLV 318-2: Hot Tap for New Meter (Meter: Port Royal PIN: 57162)
(M) (9/18/2025 - 9/19/2025)
Sta 317: Unit 1B - Engine Maintenace (9/9/2025 - 9/12/2025)
October 2025 (updated 08/21/25)
(9/29 - 10/5)
(10/6 - 10/12)
(10/13 - 10/19)
(10/20 - 10/26)
Week 5
(10/27 - 11/2)
Station 409A (Alamo) (segment 492 FH)
274
134
MLV 409A-901 to MLV 409A-902: Pig Run - Cleaning 10/14/25 (M) (10/14/2025)
MLV 409A-901 to MLV 409A-902: Pig Run - Cleaning 10/15/25 (M) (10/15/2025) MLV 409A-901 to MLV 409A-902: Pig Run - MFL-A 10/16/25 (M) (10/16/2025)
504
Sta 409: Unit 3A - Engine Inspection (9/29/2025 - 10/3/2025)
211
(245)
MLV 400-1 to MLV 409-1: Pig Run - Maintenance Cleaning 10/14/25 (M) (10/14/2025)
MLV 400-2 to MLV 409-2: Pig Run - Maintenance Cleaning 10/16/25 (M) (10/16/2025)
MLV 403-1 to MLV 404-1: Anomaly Remediation (M) (9/22/2025 - 10/10/2025)
845
(183)
638
(390)
MLV 5-2 to MLV 1-2D: Pig Runs - Maintenance Cleaning 10/23 (M) (10/23/2025) MLV 9-1S and MLV 1-1D: Pig Run - Maintenance Cleaning 10/21 (M) (10/21/2025)
MLV 9-2 to MLV 5-2: Pig Runs - Maintenance Cleaning 10/23 (M) (10/23/2025) MLV 9-3 to MLV 4-3: Pig Runs - Maintenance Cleaning 10/22 (M) (10/22/2025) Sta 11A: Annual ESD Test (10/7/2025)
Sta 11A: Unit 1A - Safety Devices (10/20/2025 - 10/22/2025)
MLV 17-1D to MLV 20-1A: Anomaly Remediation (10/13/2025 - 10/31/2025)
MLV 26-1 Relocation: Highway 59 Widening (10/6/2025 - 11/2/2025)
MLV 26-1 to MLV 27-1: Install Road Casing (10/6/2025 - 11/2/2025) Sta 25: Unit 1C - VFD Replacement (7/16/2025 - 10/31/2026)
777
637
(275)
747
(165)
MLV 32-2D TO MLV 40-2S: Pig Runs - Maintenance (10/28/2025) MLV 32-3D to MLV 40-3S: Pig Runs - Maintenance (10/21/2025) MLV 39-1 to MLV 40-1S: Class Change (10/7/2025 - 10/20/2025)
MLV 39-2 to MLV 40-2S: Class Change (9/23/2025 - 10/6/2025)
Station 40 KN South
(segment 501
268
175
(93)
Sta 500-1 to Sta 823 (MLV 507-1): Pig Run - Maintenance (M) (10/29/2025)
1,226
1219
1215
(11)
1220
(6)
1147
(79)
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 47-2A to MLV 48-2: Pipe Replacement (M) (10/13/2025 - 10/24/2025)
MLV 47-3A to MLV 48-3: Pipe Replacement (10/27/2025 - 11/7/2025) MLV 49-1 to MLV 50-1: Anomaly Remediation (3/4/2025 - 10/31/2025) MLV 53-2BREH to MLV 53-2BR: Special Permit Replacement (9/12/2025 - 10/15/2025)
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)
1160
(73)
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 84-1 to MLV 85-1: Class Change Pipe Replacement (9/15/2025 - 10/4/2025)
MLV 84-4 to MLV 85-4: Class Change Pipe Replacement (10/6/2025 - 10/25/2025)
Station 87
100 Leg
(segment 163 BH)
1,439
1300
(139)
1310
(129)
MLV 83-3 to MLV 83-3B: Install Backpressure Regulator (10/1/2025 - 10/15/2025)
MLV 83-4 to MLV 83-4B: Install Backpressure Regulator (10/16/2025 -
10/31/2025)
(89)
664
(15)
Sta 834: Annual ESD Test (9/29/2025)
260
160
(124)
MLV 856-1 to MLV 860-1: Pig Runs - Cal / IMU 10/21/25 (10/21/2025)
MLV 856-1 to MLV 860-1: Pig Runs - Cleaning / Gauge 10/16/25 (10/16/2025) MLV 856-1 to MLV 860-1: Pig Runs - MFL-C 10/23/25 (10/23/2025)
Sta 836A: Annual ESD Test (9/30/2025)
TGP - Outage Impact Report October 2025 (updated 08/21/25)
Station 823 Muskrat Line (segment 509
242
(42)
Sta 823 to MLV 516: Pig Run - Maintenance (M) (10/1/2025)
1,719
1380
(339)
(874)
MLV 540-1 to MLV 540-1A: Anomaly Remediation (10/10/2025 - 10/20/2025) MLV 540-1 to MLV 540-1A: Shallow Pipe Lowering (10/10/2025 - 10/17/2025) 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 (10/10/2025 - 10/20/2025)
1580
1562
(35)
Sta 546: Unit 4A - Engine and Compressor Overhaul (9/29/2025 - 11/7/2025)
1440
(76)
Sta 550: Unit 2A - Compressor Overhaul (8/25/2025 - 10/17/2025) Sta 550: Unit 3A - Engine Overhaul (10/13/2025 - 11/15/2025)
Sta 550: Unit 3A - Turbocharger Exchange (10/27/2025 - 11/7/2025)
2190
(455)
1890
(755)
1670
(975)
MLV 106-1 to MLV 111-7: Pig Runs - AFD Combo 10/14/25 (10/14/2025)
MLV 106-1 to MLV 111-7: Pig Runs - Cleaning / Gauge 10/9/25 (10/9/2025) MLV 106-1 to MLV 111-7: Pig Runs - EMAT 10/16/25 (10/16/2025)
MLV 108-2 to MLV 109-2: Special Permit Pipe Replacement (M) (11/1/2025 - 11/30/2025)
MLV 108-3 to MLV 109-3: Special Permit Pipe Replacement (9/24/2025 - 10/15/2025)
MLV 109-2 to 109-2A: Special Permit Pipe Replacement (10/16/2025 - 10/31/2025)
MLV 109-3 to MLV 109-3A: Class Change Pipe Replacement (10/16/2025 - 10/31/2025)
MLV 866-1 to MLV 867-1: Anomaly Remediation (10/21/2025 - 11/26/2025) MLV 867-2 to MLV 868-2: Anomaly Remediation (9/20/2025 - 10/25/2025) MLV 868-1 to MLV 869-1: Anomaly Remediation (10/21/2025 - 11/26/2025) MLV 870-1 to MLV 870-1R: Anomaly Remediation (10/21/2025 - 11/26/2025) MLV 871-2L to MLV 871-2A: Anomaly Remediation (10/20/2025 - 10/25/2025) MLV 873-2 to MLV 873-2A: Anomaly Remediation (8/25/2025 - 10/4/2025) MLV 90-3 to MLV 91-3: HDD River Crossing Replacement (10/16/2025 - 10/27/2025)
MLV 96-5 to MLV 102-5: Pig Runs - AFD Combo 9/30/25 (9/30/2025) MLV 96-5 to MLV 102-5: Pig Runs - EMAT 10/2/25 (10/2/2025)
Sta 106 Clay City: Upgrade B Building Jacket Water System (9/15/2025 - 10/3/2025)
Sta 110 Morehead: Unit Inspections (10/20/2025 - 10/24/2025) Sta 87 Portland: Annual ESD Test (10/14/2025 - 10/15/2025)
Sta 87: Unit 1E - Turbocharger Replacement (9/2/2025 - 10/10/2025) Sta 87: Unit 2E - Turbocharger Replacement (10/13/2025 - 11/26/2025)
(220)
Sta 114: Intallation of Unit Valves (10/24/2025 - 10/25/2025) Sta 114: Unit 1C - Complete Intallation of Unit Valves (10/27/2025) Sta 114: Unit 2C - Complete Intallation of Unit Valves (10/29/2025)
Sta 118A: Unit 1A - Turbine Exchange (10/6/2025 - 10/11/2025)
1797
(30)
1411
(416)
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 (9/23/2025 - 10/31/2025)
Sta 209: Unit 4A - Packing & Starting Air Valves (9/29/2025 - 10/2/2025) Sta 209: Unit 7A - Packing (10/6/2025 - 10/9/2025)
Sta 87 to Sta 219: Cumulative Planned/Unplanned Maintenance-217 (8/4/2025 - 10/19/2025)
Station 237 West
(segment 233 FH)
475
0
(475)
MLV 236-1 to MLV 237-1BR: Special Permit Replacement (M) (9/29/2025 - 10/10/2025)
(147)
Sta 241: Unit 1B - 2K Maintenance (10/7/2025 - 10/8/2025) Sta 249: Unit 1A - Aftercooler Upgrade (10/1/2025 - 10/31/2025)
Station 261 Discharge East (segment 261
930
Sta 261: Unit 4A - Compressor Rod Packing (M) (10/6/2025 - 10/9/2025)
1,150
965
(185)
Sta 303A: Unit 1A - Water Wash (10/7/2025 - 10/8/2025)
Station 321
(segment 321 FH)
2,102
1850
(252)
1240
(862)
MLV 320-2A to MLV 322-2: Drip Removal 321-2-1 (M) (10/7/2025 - 10/20/2025)
Sta 323: Unit 1A - Drive Modernization Upgrade (9/29/2025 - 10/3/2025) Sta. 323A Lackawaxen: Annual ESD Testing (9/29/2025 - 9/30/2025)
690
(113)
Sta 405A: Unit 1A - 8K Solar Turbine Borescope Inspection (10/15/2025) Sta 405A: Unit 1A - Water Wash (10/14/2025)
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 08/21/25)
(11/3 - 11/9)
(11/10 - 11/16)
(11/17 - 11/23)
(11/24 - 11/30)
438
1,066
1,101
1041
MLV 26-2 Relocation: Highway 59 Widening (11/3/2025 - 11/30/2025) Sta 25: Unit 1C - VFD Replacement (7/16/2025 - 10/31/2026)
1,354
1349
MLV 47-1A to MLV 48-1: Class Change (9/1/2025 - 12/31/2025) MLV 47-3A to MLV 48-3: Pipe Replacement (10/27/2025 - 11/7/2025)
MLV 47-4A to MLV 48-4: Pipe Replacement (M) (11/10/2025 - 11/21/2025)
1,287
887
(400)
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)
759
(544)
Sta 827 to Sta 823: Pig Run - Maintenance (M) (11/5/2025) Sta 834 to Sta 827: Maintenance Pig (M) (11/5/2025)
733
718
1,632
1610
1,771
1736
1,697
1681
1426
(271)
Sta 550 Hamilton: Annual ESD Test & Maintenance (11/11/2025 - 11/15/2025) Sta 550: A building - Replace SLC 500 Remote PLC (11/10/2025 - 11/14/2025) Sta 550: Unit 3A - Engine Overhaul (10/13/2025 - 11/15/2025)
2,028
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)
2,775
1495
(1280)
1840
(935)
MLV 866-1 to MLV 867-1: Anomaly Remediation (10/21/2025 - 11/26/2025) MLV 868-1 to MLV 869-1: Anomaly Remediation (10/21/2025 - 11/26/2025) MLV 870-1 to MLV 870-1R: Anomaly Remediation (10/21/2025 - 11/26/2025) MLV 87-4 to MLV 96-4: Pig Runs - AFD Combo 11/11/25 (11/11/2025)
MLV 87-4 to MLV 96-4: Pig Runs - Caliper 11/6/25 (11/6/2025)
MLV 87-4 to MLV 96-4: Pig Runs - Cleaning / Gauge 11/4/25 (11/4/2025) MLV 87-4 to MLV 96-4: Pig Runs - EMAT 11/13/25 (11/13/2025)
Sta 87: Unit 2E - Turbocharger Replacement (10/13/2025 - 11/26/2025)
948
1,895
1463
(432)
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 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 267 South (segment 266
503
346
1,202
1,915
1,885
827
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