-Primary impact restrictions may be necessary
TGP - Outage Impact Report
-Major impact restrictions may be necessary
Seven Day Forecast (updated 12/04/25)
-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
(12/8)
Tuesday
(12/9)
Wednesday
(12/10)
Thursday
(12/11)
Friday
(12/12)
Saturday
(12/13)
Sunday
(12/14)
Primary Outage(s) that may Impact Throughput
Est. Operational Capacity (Operational Impact) - Thousand Dth
Station 409 (Donna Line) (segment 490 FH)
585
Station 1
(segment 101 BH)
438
Station 9
(segment 109 BH)
1,066
Station 17
(segment 117 FH)
1,143
1130
(13)
MLV 16-3 to MLV 17-3: Immediate Anomaly Dig (12/1/2025 - 12/12/2025)
Station 25
(segment 125 FH)
1,101
1085
(16)
Sta 25: Unit 1C - VFD Replacement (7/16/2025 - 10/31/2026)
Station 40 South
(segment 132 FH)
1,299
1286
MLV 32-3D to MLV 40-3S: Pig Runs - Maintenance (12/10/2025)
Station 47
(segment 143 FH)
1,354
905
(449)
950
(404)
MLV 47-1A to MLV 48-1: Class Change (9/1/2025 - 3/16/2026) MLV 47-3A to MLV 48-3: Pipe Replacement (11/21/2025 - 12/8/2025) MLV 53-3BR to MLV 54-3BL: HydroTest (11/12/2025 - 12/16/2025)
Sta 54: Unit 6B - Power Overhaul (10/1/2025 - 12/12/2025)
Sta 54: Unit 8B - Power Overhaul (10/1/2025 - 12/12/2025)
Station 63
(segment 163 FH)
1,287
1195
(92)
MLV 66-2 to MLV 67-2: Immediate Anomaly Remediation (11/26/2025 - 12/17/2025)
Station 823
(segment 823 BH)
759
Station 834
(segment 834 BH)
733
720
Sta 834: Unit 6A - Overhaul (3/3/2025 - 1/2/2026)
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 - MFL-C 12/11/25 (12/11/2025)
Station 534 South of Pool (segment 530 BH)
1,632
1050
(582)
1210
(422)
Sta 530: Unit 1A - Bearings (8/25/2025 - 3/31/2026) Sta 530: Unit 2A - Bearings (8/26/2025 - 3/31/2026)
Sta 530: Unit 3A - Crankshaft Replacement (6/9/2025 - 12/31/2026) Sta 530: Unit 4A - Piston (8/25/2025 - 12/12/2025)
Sta 530: Unit 5A - Top-End Overhaul (6/9/2025 - 12/31/2026) Sta 530: Unit 6A - Bearings (10/6/2025 - 3/31/2026)
Sta 530: Unit 7A - Bearings (10/6/2025 - 3/31/2026)
Sta 530: Unit 8A - Power Cylinders (9/23/2025 - 12/31/2025)
Sta 534: Unit 6A - Piston Liner & Unloader Replacements (3/25/2025 - 3/27/2026)
Sta 534: Unit 7A - Piston / Liner (5/20/2025 - 12/31/2026)
MLV 548
(segment 542 BH)
1,771
1735
(36)
1750
(21)
Sta 546: Unit 4A - Engine and Compressor Overhaul (11/3/2025 - 12/12/2025) Sta 546: Unit 7A - Metal in Oil (7/14/2025 - 1/31/2026)
Station 860
(segment 548 BH)
1,697
1680
(17)
Sta 550: Unit 3A - Turbocharger Exchange (12/8/2025 - 12/19/2025)
Station 860 North (Segment 860 BH)
2,028
2000
(28)
1620
(408)
MLV 559-2 to MLV 565-2: Pig Run - Caliper (12/12/2025) MLV 559-2 to MLV 565-2: Pig Run - Gauge (12/10/2025)
Sta 860: Unit 1A - Aftercooler Jacket Water Inspection (6/17/2025 - 12/31/2026)
Station 110
(segment 187 BH)
(south thru Kentucky)
2,775
2455
(320)
MLV 108-2 to MLV 109-2: Special Permit Pipe Replacement (M) (11/1/2025 - 12/13/2025)
MLV 90-3 to MLV 91-3: HDD River Crossing Replacement (10/23/2025 - 12/19/2025)
Sta 106: Unit 1C - Replace Power Cylinder Bearing #9 (11/24/2025 - 1/30/2026)
Sta 87: Unit 2E - Turbocharger Replacement (10/27/2025 - 12/12/2025) Sta 871: Unit 2A - Turbo (11/6/2025 - 12/23/2025)
Sta 871: Unit 3A - Engine Crankshaft Inspection (8/22/2025 - 1/30/2026) Sta 96: Unit 1D - Compressor Valves (12/1/2025 - 12/12/2025)
Station 114
(segment 114 BH)
948
Station 204
(Segment 204 BH)
1,895
1877
(18)
Sta 200: Unit 12A - Engine Maintenance (12/8/2025 - 12/12/2025)
Station 245
(segment 245 FH)
1,053
Station 261 Discharge East (segment 261 FH)
1,035
Station 267 South (segment 266 FH)
493
336
(157)
Sta 267: Bldg A Controls Upgrade (9/2/2025 - 12/19/2025)
Station 307
(segment 307 BH)
1,202
Station 315
(segment 315 BH)
1,915
1485
(430)
Sta 315: Station Software Updates - UPS Install - Catalyst Cleaning (12/11/2025)
MLV 324
(segment 324 FH)
1,885
Station 405 HC Line (segment 299 FH)
817
Station 224
(segment 224 FH)
399
205
(194)
Sta 229: Automation Upgrade for Air Compressor (M) (12/8/2025 - 12/10/2025)
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.
December 2025 (updated 12/04/25)
Station # / Lateral
Est Nominal Operating Capacity (Thousand Dth)
Week 1
(12/1 - 12/7)
Week 2
(12/8 - 12/14)
Week 3
(12/15 - 12/21)
Week 4
(12/22 - 12/28)
Primary Outage(s)
Station 40 KN South (segment 501 FH)
285
100
(185)
Sta 500-1 to Sta 823 (MLV 507-1): Pig Run - Maintenance (M) (12/16/2025)
1349
(5)
MLV 47-1A to MLV 48-1: Class Change (9/1/2025 - 3/16/2026) MLV 53-3BR to MLV 54-3BL: HydroTest (11/12/2025 - 12/16/2025)
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 - 3/31/2026) Sta 530: Unit 7A - Bearings (10/6/2025 - 3/31/2026)
Station 542
(segment 539 BH)
1,905
1870
(35)
Sta 542: Unit 4A - Cooler Fan (12/15/2025 - 12/16/2025)
Sta 546: Unit 7A - Metal in Oil (7/14/2025 - 1/31/2026)
MLV 559-2 to MLV 565-2: Pig Run - EMAT (12/18/2025) MLV 559-2 to MLV 565-2: Pig Run - MFL (12/16/2025)
2535
(240)
MLV 102-1A to MLV 103-1: Anomaly Remediation (M) (12/15/2025 - 12/19/2025)
Sta 106: Unit 1C - Replace Power Cylinder Bearing #9 (11/24/2025 - 1/30/2026) Sta 871: Unit 2A - Turbo (11/6/2025 - 12/23/2025)
Sta 871: Unit 3A - Engine Crankshaft Inspection (8/22/2025 - 1/30/2026)
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)
January 2026 (updated 12/04/25)
(12/29 - 1/4)
(1/5 - 1/11)
(1/12 - 1/18)
(1/19 - 1/25)
Week 5
(1/26 - 2/1)
MLV 47-1A to MLV 48-1: Class Change (9/1/2025 - 3/16/2026)
(south thru
Kentucky)
2645
(130)
Sta 106: Unit 1C - Replace Power Cylinder Bearing #9 (11/24/2025 - 1/30/2026) Sta 871: Unit 3A - Engine Crankshaft Inspection (8/22/2025 - 1/30/2026)
785
(163)
Sta 114: Unit 1D - Solar Turbine Inspection (1/13/2026)
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.
February 2026 (updated 12/04/25)
(2/2 - 2/8)
(2/9 - 2/15)
(2/16 - 2/22)
(2/23 - 3/1)
MLV 26-1 Relocation: Highway 59 Widening (2/20/2026 - 3/14/2026) MLV 26-1 to MLV 27-1: Install Road Casing (2/20/2026 - 3/14/2026) Sta 25: Unit 1C - VFD Replacement (7/16/2025 - 10/31/2026)
MLV 856-1 to MLV 860-1: Pig Runs - Cleaning / Gauge 2/10/26 (2/10/2026) MLV 856-1 to MLV 860-1: Pig Runs - EMAT 2/12/26 (2/12/2026)
975
(722)
MLV 555-2 to MLV 559-2: Pig Runs - CAL / IMU 2/19/26 (2/19/2026)
MLV 555-2 to MLV 559-2: Pig Runs - Cleaning / Gauge 2/17/26 (2/17/2026) MLV 555-2 to MLV 559-2: Pig Runs - EMAT 2/26/26 (2/26/2026)
MLV 555-2 to MLV 559-2: Pig Runs - MFL-C 2/24/26 (2/24/2026)
2770
Sta 871: Unit 1A - 3Q Engine Inspection (2/4/2026) Sta 871: Unit 2A - 3Q Engine Inspection (2/3/2026)
845
(103)
Sta 119A: Unit 1A - Solar Turbine Inspection (2/10/2026)
1823
(72)
MLV 204-1 to MLV 209-1: Pig Run - Cal/IMU (2/5/2026)
MLV 204-1 to MLV 209-1: Pig Run - EMAT (2/12/2026) MLV 204-1 to MLV 209-1: Pig Run - Gauge (2/3/2026) MLV 204-1 to MLV 209-1: Pig Run - MFL-C (2/10/2026)
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