DATE: July 13, 2026                                         TIME:   9:00 AM CST

TO: ALL TENNESSEE GAS PIPELINE COMPANY, L.L.C. CUSTOMERS

RE: RESERVATION OF CAPACITY FOR FUTURE EXPANSION IN ZONE L, 1, 2, 3, and 4 – UPDATE 1 (ADDING ZONE 3 DELIVERIES)

On August 13, 2025, Tennessee Gas Pipeline Company, L.L.C. (“Tennessee”) posted “Reservation of Capacity for Future Expansion in Zone L, 1, 2, 4” (“Reservation”) on its interactive website, pursuant to Article XXVI, Section 5.8 of the General Terms and Conditions (“GT&C”) of its FERC NGA Gas Tariff, as it may be revised from time to time (“Tariff”), to give notice that certain capacity as described in the Reservation is reserved for use in a future expansion of Tennessee's system.  The “Project” for which the capacity was reserved in the Reservation was designed to provide incremental supply from existing and new receipt points in Zone 4 to existing and new delivery points in Zone 1 and Zone L.  As further described herein, Tennessee has expanded the scope of the Project to include deliveries to existing and new delivery points in Zone 3.

Pursuant to Article XXVI, Section 5.8 of the GT&C of its Tariff, Tennessee gives notice that it is updating its Reservation as described herein:

Tennessee is maintaining and continuing for the Project the following capacity reservations previously set forth in the Reservation:

Capacity on Mainline Valve Segments:

·         227,000 Dth/d from MLV 214 to MLV 200

·         288,881 Dth/d from MLV 200 to MLV 110

·         290,089 Dth/d from MLV 110 to MLV 87

·         8,703 Dth/d from MLV 217A Pitt Term to MLV 217

·         28,464 Dth/d from MLV 87 to MLV 843

·         106,201 Dth/d from MLV 87 to MLV 538

·         126,201 Dth/d from MLV 538 to MLV 534

Receipt Meter Capacity: 

·         279,250 Dth/d – 412888 NFG/TGP MERCER RECEIP MERCER

·         205,000 Dth/d – 55635 EGTS/TGP PETERSBURG II RECEIPT MAHO

·         488,600 Dth/d – 412868 UTICA EO/TGP KENSINGTON DEHY: RIP 2

·         420,045 Dth/d – 54641 E OH GAS/TGP BULLSEYE TUSCARAWAS

·         497,000 Dth/d – 48850 E OH GAS/TGP HOLMES TUSCARAWAS

·         150,000 Dth/d – 50708 EGTS/TGP PORT WASHINGTON TUSCARAWAS

Delivery Meter Capacity: 

·         125,644 Dth/d – 420291 TRNSCO/TGP HEIDELBERG MISSISIPPI JA

·         126,201 Dth/d – 420999 POOLING PT – 500 LEG – ZONE L

In addition, Tennessee is adding the following capacity reservation for the Project:

Capacity on Mainline Valve Segments:

·         532,000 Dth/d from MLV 87 to MLV 122

Estimated In-Service Date of the Project:

·         December 1, 2029

Pursuant to Article XXVI, Section 5.8 of the GT&C of Tennessee's Tariff, Tennessee may sell such reserved capacity on a limited-term basis up to the in-service date of the Project, and Tennessee reserves the right to limit any extension rights provided commensurate with the proposed in-service date of the Project.

For further information, please contact:

Andoni Vossos

(713) 420-2054

Lindsey Fritz

713-420-2626