-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

Seven Day Forecast (updated 09/09/26)

-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

(9/14)

Tuesday

(9/15)

Wednesday

(9/16)

Thursday

(9/17)

Friday

(9/18)

Saturday

(9/19)

Sunday

(9/20)

Primary Outage(s) that may Impact Throughput

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 409A

(Alamo) (segment 492 FH)

274

215

(59)

215

(59)

215

(59)

215

(59)

215

(59)

215

(59)

215

(59)

MLV 409-1 to MLV 406-1: Spike Test (M) (9/14/2026 - 10/31/2026)

Station 409 (Donna Line) (segment 490

FH)

564

564

564

564

564

564

564

564

Station 1

(segment 101 BH)

399

399

399

399

399

399

399

399

Station 9

(segment 109 BH)

1,027

835

(192)

835

(192)

835

(192)

835

(192)

835

(192)

1,027

1,027

MLV 2-2 to MLV 3-2: Anomaly Remediation (9/8/2026 - 9/18/2026)

Station 17

(segment 117 FH)

1,122

1100

(22)

1100

(22)

1100

(22)

1100

(22)

1100

(22)

1,122

1,122

MLV 19-1 TO MLV 20-1A: Pipe Replacement (M) (8/6/2026 - 9/18/2026)

Station 25

(segment 125 FH)

1,078

1,078

1,078

1,078

1,078

1,078

1,078

1,078

Station 40 KN South (segment 501

FH)

267

200

(67)

200

(67)

200

(67)

200

(67)

200

(67)

267

267

Sta 500C1: Unit 1A - Engine Inspection (9/14/2026 - 9/18/2026)

Station 47

(segment 143 FH)

1,343

1,343

1,343

1,343

1,343

1,343

1,343

1,343

Station 63

(segment 163 FH)

1,242

1117

(125)

1117

(125)

1117

(125)

1117

(125)

1117

(125)

1117

(125)

1117

(125)

MLV 54-3 to MLV 106-3: Emergent Repair - CAO (2/26/2026 - 12/31/2026) MLV 83-1A to MLV 83-1: Anomaly Remediation (9/14/2026 - 9/19/2026)

Station 823

(segment 823 BH)

734

734

734

734

734

734

734

734

Station 834

(segment 834 BH)

683

670

(13)

670

(13)

670

(13)

670

(13)

670

(13)

670

(13)

683

Sta 834: Unit 1A - Replace Insulation Blanket (9/14/2026 - 9/15/2026)

Sta 834: Unit 2A - Replace Insulation Blanket (9/16/2026 - 9/17/2026) Sta 834: Unit 3A - Replace Insulation Blanket (9/18/2026 - 9/19/2026)

Station 534 South of Pool (segment 530

BH)

1,550

985

(565)

985

(565)

985

(565)

985

(565)

1,550

1,550

1,550

MLV 533-2 to MLV 534-2: Pipe Replacement (M) (6/4/2026 - 9/17/2026)

Station 860

(segment 548 BH)

1,593

935

(658)

935

(658)

935

(658)

935

(658)

935

(658)

1577

(16)

1577

(16)

MLV 546-2 to MLV 547-2: Line Recoat (9/14/2026 - 9/18/2026)

Sta 542: Unit 2A - Emergent Repair (4/7/2026 - 9/30/2026) Sta 542: Unit 3A - Emergent Repair (3/26/2026 - 9/18/2026)

Sta 546: Annual ESD Tests & Maintenance (9/14/2026 - 9/18/2026) Sta 546: Unit 7A - Metal in Oil (7/14/2025 - 9/30/2026)

Sta 555: Scrubber/Filter/Separator Clean, Inspect & Filter Change (9/14/2026 - 9/17/2026)

Sta 555: Unit 1B - Hot Gas Path (8/10/2026 - 9/18/2026)

Station 860 North (Segment 860

BH)

1,874

1524

(350)

1524

(350)

1524

(350)

1524

(350)

1524

(350)

1846

(28)

1846

(28)

Sta 563: Station Outage - RMV Valve Test (9/18/2026) Sta 563: Unit 1A - Emergent Repair (8/28/2026 - 9/18/2026)

Sta 860: Unit 1A - Aftercooler Jacket Water Inspection (6/17/2025 -

12/31/2026)

Station 110

(segment 187 BH)

(south thru Kentucky)

2,685

2405

(280)

2405

(280)

2400

(285)

2397

(288)

2400

(285)

2405

(280)

2405

(280)

MLV 105-1 to MLV 105-1A: Anomaly Remediation (9/14/2026 - 9/25/2026) MLV 109-5 to MLV 109-5A: Pipe Replacement (9/14/2026 - 10/12/2026) MLV 109-5A to MLV 110-5: Pipe Replacement (9/14/2026 - 10/12/2026) MLV 110-2 to MLV 114-2: CAO - Force Majeure (M) (7/14/2026 - 12/31/2026)

MLV 54-3 to MLV 106-3: Emergent Repair - CAO (2/26/2026 - 12/31/2026) MLV 96-3BR to MLV 96-3BL: Spike Test (7/27/2026 - 9/18/2026)

Sta 106: Unit 2D - 4K Solar Turbine Inspection (9/16/2026 - 9/18/2026) Sta 87: D Building - Fuel Block & Bleed Valves (9/17/2026)

Sta 87: Unit 3D - Power side Overhaul (6/22/2026 - 9/30/2026)

Station 114

(segment 114 BH)

907

812

(95)

812

(95)

812

(95)

907

907

907

907

Sta 119A: Unit 1A - Solar Turbine Inspection (9/14/2026 - 9/16/2026)

Station 204

(Segment 204 BH)

1,828

1700

(128)

1700

(128)

1700

(128)

1700

(128)

1,828

1,828

1,828

Sta 204: Unit 10A - Base Gasket (9/14/2026 - 9/17/2026)

Sta 209 Cambridge: Unit 13A - Install Barring Jack (9/14/2026 - 9/17/2026)

Station 245

(segment 245 FH)

986

970

(16)

970

(16)

970

(16)

970

(16)

970

(16)

970

(16)

970

(16)

Sta 245: Unit 1A & 2A - Exhaust System & HP Fuel (4/27/2026 - 11/1/2026)

MLV 256 West

(segment 249 FH)

1,203

660

(543)

660

(543)

660

(543)

660

(543)

660

(543)

1,203

1,203

MLV 258-2 to MLV 259-2: Emergent Repair (9/9/2026 - 9/18/2026)

Station 261 Discharge East (segment 261

FH)

888

715

(173)

715

(173)

715

(173)

715

(173)

715

(173)

715

(173)

715

(173)

Sta 264 Charlton: Unit 1C - Engine Maintenance (8/24/2026 - 10/16/2026)

Station 307

(segment 307 BH)

1,153

1,153

1,153

1,153

1,153

1,153

1,153

1,153

Station 313 Discharge (segment 399 FH)

797

590

(207)

590

(207)

590

(207)

590

(207)

590

(207)

590

(207)

797

MLV 313A-101A to MLV 313A-401: Anomaly Remediation (M) (9/7/2026 - 9/19/2026)

MLV 313A-101L to MLV 313A-101A: Anomaly Remediation (M) (9/7/2026 - 9/19/2026)

MLV 313A-403 to MLV 313A-404: Anomaly Remediation (M) (9/7/2026 - 9/19/2026)

MLV 313A-405A to MLV 313A-406: Anomaly Remediation (M) (9/7/2026 -

9/19/2026)

Station 315

(segment 315 BH)

1,823

1680

(143)

1680

(143)

1675

(148)

1675

(148)

1,823

1,823

1,823

Sta 315: Unit 1B - Water Washes and Borescope (9/16/2026 - 9/17/2026) Sta 315: Unit 2A - Water Washes and Borescope (9/14/2026 - 9/15/2026)

MLV 324

(segment 324 FH)

1,767

1,767

1,767

1,767

1,767

1,767

1,767

1,767

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

Seven Day Forecast (updated 09/09/26)

-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

(9/14)

Tuesday

(9/15)

Wednesday

(9/16)

Thursday

(9/17)

Friday

(9/18)

Saturday

(9/19)

Sunday

(9/20)

Primary Outage(s) that may Impact Throughput

Est. Operational Capacity (Operational Impact) - Thousand Dth

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.

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

September 2026 (updated 09/09/26)

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station # / Lateral

Est Nominal Operating Capacity (Thousand Dth)

Week 1

(8/31 - 9/6)

Week 2

(9/7 - 9/13)

Week 3

(9/14 - 9/20)

Week 4

(9/21 - 9/27)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 409A (Alamo) (segment 492 FH)

274

125

(149)

MLV 409-1 to MLV 406-1: Spike Test (M) (9/14/2026 - 10/31/2026)

MLV 409A-101.1 to MLV 409A-103: Pig Runs - Cleaning / Gauge (M) (9/21/2026) MLV 409A-101.1 to MLV 409A-103: Pig Runs - Cleaning / Gauge (M) (9/22/2026) MLV 409A-101.1 to MLV 409A-103: Pig Runs - Cleaning / Gauge (M) (9/23/2026) MLV 409A-101.1 to MLV 409A-103: Pig Runs - EMAT (M) (9/25/2026)

MLV 409A-101.1 to MLV 409A-103: Pig Runs - MFL-C (M) (9/24/2026)

Station 409 (Donna Line) (segment 490

FH)

564

564

Station 1

(segment 101 BH)

399

300

(99)

Sta 1: Station Power Protection System (9/22/2026)

Station 9

(segment 109 BH)

1,027

1,027

MLV 1-1D to MLV 5-1: Spike Test (M) (9/21/2026 - 11/2/2026)

Station 17

(segment 117 FH)

1,122

1085

(37)

MLV 17-1D to MLV 20-1A: Pig Run - Chemical Cleaning (9/21/2026) MLV 17-1D to MLV 20-1A: Pig Run - EMAT (9/24/2026)

MLV 17-1D to MLV 20-1A: Pig Run - GAUGE PLATE (9/22/2026)

MLV 17-1D to MLV 20-1A: Pig Run - MFL-C (9/23/2026)

Station 25

(segment 125 FH)

1,078

1,078

Station 47

(segment 143 FH)

1,343

1,343

Station 63

(segment 163 FH)

1,242

1117

(125)

MLV 54-3 to MLV 106-3: Emergent Repair - CAO (2/26/2026 - 12/31/2026) MLV 82-2C to MLV 83-2: Anomaly Remediation (9/21/2026 - 9/26/2026)

MLV 84-3 to MLV 85-3: Anomaly Remedition (9/22/2026 - 9/27/2026)

Station 823

(segment 823 BH)

734

734

Station 834

(segment 834 BH)

683

670

(13)

Sta 834: Unit 4A - Replace Insulation Blanket (9/21/2026 - 9/22/2026)

Station 860

(segment 548 BH)

1,593

1545

(48)

Sta 542: Unit 2A - Emergent Repair (4/7/2026 - 9/30/2026) Sta 542: Unit 4A - Cylinder Replacement (9/21/2026 - 9/25/2026)

Sta 546: Unit 7A - Metal in Oil (7/14/2025 - 9/30/2026)

Sta 555: Unit 4A - Engine Maintenance (9/21/2026 - 9/24/2026)

Station 860 North (Segment 860

BH)

1,874

1846

(28)

Sta 860: Unit 1A - Aftercooler Jacket Water Inspection (6/17/2025 - 12/31/2026) Sta 860: Unit 1B - Replace Turbocharger (9/21/2026 - 9/25/2026)

Station 110

(segment 187 BH)

(south thru Kentucky)

2,685

2405

(280)

MLV 105-1 to MLV 105-1A: Anomaly Remediation (9/14/2026 - 9/25/2026) MLV 109-5 to MLV 109-5A: Pipe Replacement (9/14/2026 - 10/12/2026) MLV 109-5A to MLV 110-5: Pipe Replacement (9/14/2026 - 10/12/2026) MLV 110-2 to MLV 114-2: CAO - Force Majeure (M) (7/14/2026 - 12/31/2026)

MLV 54-3 to MLV 106-3: Emergent Repair - CAO (2/26/2026 - 12/31/2026) MLV 93-4 to MLV 94-4: Anomaly Remediation (M) (9/21/2026 - 9/28/2026) Sta 87: Unit 3D - Power side Overhaul (6/22/2026 - 9/30/2026)

Station 114

(segment 114 BH)

907

907

Station 204

(Segment 204 BH)

1,828

1700

(128)

Sta 204: Unit 5A - Piston (9/21/2026 - 9/24/2026)

Sta 209 Cambridge: Unit 12A - Eutectic Device (9/21/2026 - 9/24/2026)

Station 245

(segment 245 FH)

986

970

(16)

Sta 245: Unit 1A & 2A - Exhaust System & HP Fuel (4/27/2026 - 11/1/2026)

Station 261 Discharge East (segment 261

FH)

888

555

(333)

Sta 264 Charlton: Annual ESD Test (9/23/2026 - 9/24/2026)

Sta 264 Charlton: Unit 1C - Engine Maintenance (8/24/2026 - 10/16/2026)

Station 307

(segment 307 BH)

1,153

1010

(143)

Sta 310: Unit 1A - Water Washes and Borescope (9/21/2026 - 9/22/2026)

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

September 2026 (updated 09/09/26)

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station # / Lateral

Est Nominal Operating Capacity (Thousand Dth)

Week 1

(8/31 - 9/6)

Week 2

(9/7 - 9/13)

Week 3

(9/14 - 9/20)

Week 4

(9/21 - 9/27)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 313 Discharge (segment 399

FH)

797

797

Station 315

(segment 315 BH)

1,823

1,823

Station 321

(segment 321 FH)

2,102

1830

(272)

Sta 323: Station Outage (9/21/2026 - 9/24/2026)

MLV 324

(segment 324 FH)

1,767

1,767

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.

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

October 2026 (updated 09/09/26)

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station # / Lateral

Est Nominal Operating Capacity (Thousand Dth)

Week 1

(9/28 - 10/4)

Week 2

(10/5 - 10/11)

Week 3

(10/12 - 10/18)

Week 4

(10/19 - 10/25)

Week 5

(10/26 - 11/1)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 409A (Alamo) (segment 492

FH)

274

215

(59)

215

(59)

215

(59)

215

(59)

215

(59)

MLV 409-1 to MLV 406-1: Spike Test (M) (9/14/2026 - 10/31/2026)

Station 409 (Donna Line) (segment 490

FH)

564

564

564

564

564

564

Station 1

(segment 101 BH)

399

300

(99)

300

(99)

300

(99)

300

(99)

300

(99)

Station 9

(segment 109 BH)

1,027

1,027

1,027

1,027

125

(902)

946

(81)

MLV 1-1D to MLV 5-1: Spike Test (M) (9/21/2026 - 11/2/2026)

MLV 9-2S to MLV 1-2: Pig Runs - Cleaning / Maintenance (M) (10/22/2026) MLV 9-3 to MLV 5-3: Pig Run - Maintenance (M) (10/21/2026)

Station 17

(segment 117 FH)

1,122

1,122

985

(137)

980

(142)

1100

(22)

1,122

MLV 17-2D to MLV 20-2A: Pig Run - Chemical Cleaning (10/19/2026 - 10/20/2026)

MLV 17-2D to MLV 20-2A: Pig Run - GAUGE (10/21/2026) MLV 17-2D to MLV 20-2A: Pig Run - MFL-A (10/22/2026)

MLV 32-2D TO MLV 40-2S: Pig Runs - Maintenance (10/8/2026) MLV 32-3D to MLV 40-3S: Pig Runs - Maintenance (10/13/2026)

Sta 25: Annual ESD Test (10/13/2026)

Station 25

(segment 125 FH)

1,078

1,078

1,078

1,078

1,078

1,078

Station 47

(segment 143 FH)

1,343

1025

(318)

1025

(318)

1290

(53)

1300

(43)

1,343

MLV 58-2 to MLV 59-2: Anomaly Remediation (10/10/2026 - 10/20/2026) Sta 47: Scrubber/Filter/Separator Cleaning/Inspection/Changeout (9/28/2026 -

10/2/2026)

Sta 47: Station Transformer Maintenance (10/6/2026)

Sta 47: Unit 1D - 16K hour Overhaul (10/5/2026 - 10/15/2026)

Station 63

(segment 163 FH)

1,242

1117

(125)

1117

(125)

1117

(125)

1117

(125)

1117

(125)

MLV 54-3 to MLV 106-3: Emergent Repair - CAO (2/26/2026 - 12/31/2026) MLV 82-1 to MLV 87-1: Pig Run - AFD/Cal/IMU (10/8/2026)

MLV 82-1 to MLV 87-1: Pig Run - Cleaning / Gauge (10/6/2026)

MLV 82-1 to MLV 87-1: Pig Run - EMAT (10/13/2026)

Station 823

(segment 823 BH)

734

734

734

734

734

734

Station 534 South of Pool (segment 530

BH)

1,550

1,550

1440

(110)

1175

(375)

1,550

1,550

Sta 529: Unit 1A - Solar Inspection (10/12/2026 - 10/15/2026)

Sta. 527 Port Sulphur: Building C - Medium Voltage Electrical Testing (10/5/2026 - 10/9/2026)

Station 534

(segment 534 BH)

1,909

1,909

1,909

1770

(139)

1,909

1,909

Sta 538: Boost Pump Vibration Upgrade (10/12/2026 - 10/15/2026)

Station 860

(segment 548 BH)

1,593

1577

(16)

1,593

1,593

1181

(412)

1,593

Sta 542 Dekalb: Annual ESD Test (10/20/2026 - 10/22/2026) Sta 542: Unit 2A - Emergent Repair (4/7/2026 - 9/30/2026)

Sta 546: Unit 7A - Metal in Oil (7/14/2025 - 9/30/2026)

Station 860 North (Segment 860

BH)

1,874

1846

(28)

1846

(28)

1475

(399)

1475

(399)

1475

(399)

MLV 560-2 to MLV 563-2: Pipe Replacements (M) (10/15/2026 - 10/26/2026) Sta 860: Unit 1A - Aftercooler Jacket Water Inspection (6/17/2025 - 12/31/2026)

Station 110

(segment 187 BH)

(south thru Kentucky)

2,685

2407

(278)

2043

(642)

1972

(713)

2428

(257)

1822

(863)

MLV 103-3 to MLV 105-3: Crossover Upgrade (10/10/2026 - 10/17/2026) MLV 104-3 to MLV 106-3S: HDD at Kentucky River (10/10/2026 - 10/17/2026) MLV 109-3A to MLV 110-3: Pipe Replacement (10/14/2026 - 10/30/2026) MLV 109-5 to MLV 109-5A: Pipe Replacement (9/14/2026 - 10/12/2026)

MLV 109-5A to MLV 110-5: Pipe Replacement (9/14/2026 - 10/12/2026) MLV 110-2 to MLV 114-2: CAO - Force Majeure (M) (7/14/2026 - 12/31/2026)

MLV 54-3 to MLV 106-3: Emergent Repair - CAO (2/26/2026 - 12/31/2026) MLV 867-2 to MLV 868-2: Anomaly Remediation (10/19/2026 - 10/24/2026) MLV 870-2 to MLV 870-2R: Anomaly Remediation (10/12/2026 - 10/17/2026) MLV 93-4 to MLV 94-4: Anomaly Remediation (M) (9/21/2026 - 9/28/2026) MLV 97-3 to MLV 106-3: Pig Run - Cleaning / Gauge (10/27/2026)

MLV 97-3 to MLV 106-3: Pig Run - MFL-S (10/29/2026)

Sta 87: Unit 3D - Power side Overhaul (6/22/2026 - 9/30/2026)

Sta 875: Unit 1A- 8K Solar Turbine Inspection (10/27/2026 - 10/29/2026) Sta 96: Unit 2D Replace Compressor Valves (10/12/2026 - 10/15/2026)

Station 114

(segment 114 BH)

907

907

853

(54)

907

907

907

Sta 118A Tyler Mountain: Annual ESD Test (10/5/2026 - 10/6/2026)

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

October 2026 (updated 09/09/26)

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station # / Lateral

Est Nominal Operating Capacity (Thousand Dth)

Week 1

(9/28 - 10/4)

Week 2

(10/5 - 10/11)

Week 3

(10/12 - 10/18)

Week 4

(10/19 - 10/25)

Week 5

(10/26 - 11/1)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 204

(Segment 204 BH)

1,828

1375

(453)

1,828

1755

(73)

1755

(73)

1530

(298)

MLV 209-2 to MLV 214-2: Pig Run - Chem Cleaning (10/26/2026)

MLV 209-2 to MLV 214-2: Pig Run - Chem Cleaning (10/27/2026) MLV 209-2 to MLV 214-2: Pig Run - Chem Cleaning (10/28/2026) MLV 209-2 to MLV 214-2: Pig Run - Chem Cleaning (10/29/2026) MLV 209-2 to MLV 214-2: Pig Run - Chem Cleaning (10/30/2026) MLV 214-1 to MLV 219-1: Pig Run - Cal/IMU (10/20/2026)

MLV 214-1 to MLV 219-1: Pig Run - Gauge/Cleaning (10/15/2026) MLV 214-1 to MLV 219-1: Pig Run - MFL-C (10/22/2026)

Sta 204: Scrubber Filter Change (10/1/2026 - 10/3/2026) Sta 209 Cambridge: Scrubber Filter (9/28/2026 - 9/30/2026)

Sta 209 Cambridge: Unit 11A - Eutectic Device (9/28/2026 - 9/30/2026)

Station 233

(segment 233 FH)

459

355

(104)

459

459

459

459

MLV 233-2 to MLV 235-2: Pig Run (9/30/2026)

Station 245

(segment 245 FH)

986

970

(16)

970

(16)

970

(16)

970

(16)

760

(226)

Sta 245: Unit 1A & 2A - Exhaust System & HP Fuel (4/27/2026 - 11/1/2026) Sta 245-1 to MLV 249-1: Pig Run - EMAT (10/28/2026)

Sta 245-1 to MLV 249-1: Pig Run - MFL-C - Rerun (10/27/2026)

Station 261 Discharge East (segment 261

FH)

888

500

(388)

715

(173)

555

(333)

888

888

Sta 261 Agawam: Annual ESD test (M) (9/28/2026 - 10/2/2026)

Sta 264 Charlton: Unit 1C - Engine Maintenance (8/24/2026 - 10/16/2026) Sta 264: Oil System (10/12/2026 - 10/16/2026)

Station 307

(segment 307 BH)

1,153

775

(378)

775

(378)

765

(388)

970

(183)

1,153

MLV 302-2 to MLV 303-2: Anomaly Remediation (9/28/2026 - 10/10/2026) Sta 219: Annual ESD Test & Scrubber Maintenance (10/12/2026 - 10/16/2026)

Sta 303A: Unit 1A - Water Wash (10/19/2026 - 10/22/2026) Sta 307: Unit 4A - Trabon (9/29/2026 - 10/2/2026)

Station 313 Discharge (segment 399

FH)

797

797

797

797

797

797

Station 315

(segment 315 BH)

1,823

1,823

1,823

1,823

1,823

1,823

MLV 324

(segment 324 FH)

1,767

1450

(317)

1,767

1,767

1550

(217)

1,767

MLV 325-1 to MLV 329-1: Pig runs - Cleaning/Gauge (M) (10/19/2026) MLV 325-1 to MLV 329-1: Pig runs - EMAT (M) (10/20/2026)

Sta 325: Station Outage (9/29/2026 - 10/1/2026)

Cranston Lateral South

(segment 281

FH)

187

187

187

125

(62)

187

187

Sta 265: Unit 1A - Replace Lube Oil Fan (10/12/2026)

Station 405 HC Line (segment 299

FH)

794

794

794

670

(124)

794

794

Sta 405A: Unit 1A - 4k Waterwash (10/13/2026) ; Sta 405A: Unit 1A - 8K Solar Turbine Inspection (10/14/2026)

Station 224

(segment 224 FH)

388

388

200

(188)

388

388

388

MLV 229-2 to MLV 232-2: Pig runs - Maintenance (M) (10/6/2026)

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.

The impacts sheet are based on steady-state hydraulic models assuming recent operating flows, conditions, and various unit outages.

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

November 2026 (updated 09/09/26)

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station # / Lateral

Est Nominal Operating Capacity (Thousand Dth)

Week 1

(11/2 - 11/8)

Week 2

(11/9 - 11/15)

Week 3

(11/16 - 11/22)

Week 4

(11/23 - 11/29)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 409 (Donna Line) (segment 490

FH)

587

587

587

587

587

MLV 406

(segment 406 BH)

479

479

479

479

479

Station 1

(segment 101 BH)

438

438

399

(39)

226

(212)

438

MLV 400-1 to MLV 409-1: Pig Run - Maintenance Cleaning (M) (11/10/2026) MLV 400-2 to MLV 409-2: Pig Run - Maintenance Cleaning (M) (11/17/2026)

Station 9

(segment 109 BH)

1,066

985

(81)

880

(186)

1,066

1,066

MLV 1-1D to MLV 5-1: Spike Test (M) (9/21/2026 - 11/2/2026)

MLV 1-1D to MLV 9-1S: Pig Run - Maintenance / Cleaning (M) (11/10/2026)

Station 17

(segment 117 FH)

1,138

1,138

1,138

1,138

1,138

Sta 32: Annual ESD Test (11/17/2026 - 11/18/2026)

Station 25

(segment 125 FH)

1,095

1,095

1,095

1,095

1,095

Station 40 South

(segment 132 FH)

1,294

1,294

1,294

915

(379)

1,294

Station 47

(segment 143 FH)

1,428

1350

(78)

1350

(78)

1,428

1,428

MLV 61-3 to MLV 62-3: Pipe Replacements (11/2/2026 - 11/13/2026)

Station 63

(segment 163 FH)

1,192

871

(321)

1067

(125)

1067

(125)

1067

(125)

MLV 54-3 to MLV 106-3: Emergent Repair - CAO (2/26/2026 - 12/31/2026) MLV 71-3D to MLV 74-3: Pig Runs - Cleaning / Gauge (11/3/2026)

MLV 71-3D to MLV 74-3: Pig Runs - TDW MDS (11/5/2026)

Station 823

(segment 823 BH)

758

210

(548)

758

758

758

Sta 827 to Sta 823: Pig Run - Maintenance (M) (11/5/2026) Sta 834 to Sta 827: Maintenance Pig (M) (11/5/2026)

Station 860

(segment 548 BH)

1,665

1660

(5)

1450

(215)

1,665

1,665

Sta 550 Hamilton: Annual ESD Test (11/9/2026)

Sta 550: Unit 1B - Juction Box Rewire & Unit Valves (11/2/2026 - 11/13/2026)

Station 860 North (Segment 860 BH)

2,059

2031

(28)

2031

(28)

2031

(28)

2031

(28)

Sta 860: Unit 1A - Aftercooler Jacket Water Inspection (6/17/2025 - 12/31/2026) Sta 860: Unit 1C - 4K/Turbine Waterwash/Boroscope (11/2/2026 - 11/3/2026) Sta 860: Unit 2C - 4K/Turbine Waterwash/Boroscope (11/3/2026 - 11/4/2026)

Station 110

(segment 187 BH)

(south thru

Kentucky)

2,594

1951

(643)

2327

(267)

2327

(267)