PERMIAN WEST EXPANSION OPEN SEASON

OPEN SEASON NOTICE FOR EXPANSION FIRM CAPACITY ON

EL PASO NATURAL GAS COMPANY, L.L.C.

Bid Deadline: November 3, 2025, at 2:00 p.m. Mountain Time (“MT”)

Portable Document Format (.pdf) file of Open Season: https://pipeline2.kindermorgan.com/PortalWeb/PortalDocs.aspx?code=EPNG&parent=1600

In response to market interest, El Paso Natural Gas Company, L.L.C. (“Transporter”) is conducting this binding Permian West Expansion Open Season (this “Open Season”) for expansion capacity for firm natural gas transportation service on Transporter's pipeline system between the Primary Receipt Points and the Primary Delivery Points described below. Transporter proposes to provide the expansion capacity described below (the “Project Capacity”) by performing system upgrades and constructing additional facilities, including a nine-mile, 30” (outside diameter) pipeline loop of its Line No. 1110 near Cornudas, Texas (the “Expansion Project Facilities”).

The purpose of this Open Season is to solicit binding commitments for the Project Capacity from bidders that are willing to commit to such firm transportation service under terms and conditions described below and in accordance with all applicable rules and regulations of the Federal Energy Regulatory Commission (“FERC”) and the terms of Transporter's FERC Gas Tariff, Third Revised Volume No. 1A (the “Tariff”).

Project Capacity:

Generally, the Project Capacity will consist of firm transportation capacity (FT-1) on Flow Path SS1 from Primary Receipt Points in the Permian Basin to new or existing Primary Delivery Points located as far west as the Willcox Delivery Point (IWILCOXD), in each case, subject to available capacity at a particular point. The specific volume of available Project Capacity between a particular Primary Receipt Point and a Primary Delivery Point combination will depend on the location of the particular Primary Delivery Point relative to certain system capacity constraints (i.e., through the capacity constraints at, and to the upstream/suction side of, the capacity constraints at the compressor stations (“CS”) identified in the table below) and will vary from month-to-month as follows:

For example, during the month of June, 82,229 Dth/day of Project Capacity is available from a Primary Receipt Point through the Cornudas CS capacity constraint to the upstream side of the Hueco CS capacity constraint, 81,313 Dth/day of Project Capacity is available from a Primary Receipt Point through the Hueco CS capacity constraint to the upstream side of the El Paso CS capacity constraint, and so on and so forth. Furthermore, the capacities listed in the table above are mutually exclusive. For instance, if 82,229 Dth/day during the month of June is awarded from a Primary Receipt Point to a Primary Delivery Point located between the Cornudas CS capacity constraint and the Hueco CS capacity constraint, no Project Capacity would be available downstream of the Hueco CS capacity constraint. Similarly, if 34,807 Dth/day during the month of April is awarded from a Primary Receipt Point to a Primary Delivery Point located between the Lordsburg CS capacity constraint and the upstream side of the Dragoon CS capacity constraint (e.g., to the Willcox Delivery Point (IWILCOXD)), only 26,272 Dth/day (i.e., 61,079 Dth/day minus 34,807 Dth/day) would be available between a Primary Receipt Point and a Primary Delivery Point located between the Hueco CS capacity constraint and the upstream side El Paso CS capacity constraint. Furthermore, available capacities listed above may vary with each Primary Receipt Point/Primary Delivery Point combination depending on the available meter capacities at the specific points.

Recommended Term and Rate:

Transporter recommends a minimum service term of 15 years from the in-service date of the Expansion Project Facilities (anticipated to occur as early as January 1, 2027), and a negotiated reservation rate that is not less than the following applicable rate throughout the term:

Receipt and Delivery Points:

The capacity available at a particular Primary Receipt Point or Primary Delivery Point may vary depending on the meter, location, and other factors applicable to such point. As further provided in the Tariff, if construction of new Delivery Point facilities is required to provide service to a bidder under the applicable FTSA (as defined below) (“New Meter Facilities”), such bidder will be required to reimburse Transporter for its costs and expenses to construct and place in-service such New Meter Facilities, and such reimbursement obligation will be set forth in the FTSA and/or the applicable interconnect agreement. Please contact your service representative or any of the individuals listed below for additional details.

A successful negotiated rate bidder will have the right to access, on a secondary basis, all other Receipt Points and/or Delivery Points within the Texas, New Mexico, and Arizona delivery zones as provided in the Tariff at the negotiated rate, plus all applicable Surcharges, incrementally priced lateral charges, and/or third-party capacity charges as provided in the Tariff.

Turnback Capacity:

Pursuant to Section 4.7(c) of the General Terms and Conditions of the Tariff, Transporter is soliciting non-binding offers from existing shippers to turnback capacity from Permian Basin Receipt Points to the Willcox Delivery Point (IWILCOXD). If existing shippers express interest in turning back capacity, Transporter will propose to accept such offers on a competitive basis (e.g., via a reverse auction for a permanent release of their firm capacity to Transporter) subject to: (a) the shipper's offer providing Transporter the highest value; and (b) Transporter's ability to use the capacity in lieu of the Project Capacity to meet the needs of new shippers on the Expansion Project Facilities. If existing shippers express interest in turning back capacity, Transporter will make a subsequent posting detailing the conditions for shippers to submit offers to turnback their capacity.

General Open Season Requirements:

To bid, complete the attached binding bid sheet and e-mail it to KMWestBids@KinderMorgan.com on or before the Open Season End Date.

Open Season Start Date: October 6, 2025, at 5:00 p.m. MT

Open Season End Date: November 3, 2025, at 2:00 p.m. MT

Award Notification Deadline: November 14, 2025, at 4:00 p.m. MT

Transporter will rely upon the time an e-mailed bid is received to determine whether a bid is timely. Bids that are received after the Open Season End Date (as determined by the time stamp on Transporter's e-mail inbox) will be considered invalid bids and will not be eligible for an award of capacity in this Open Season. Transporter recommends that bids be submitted well in advance of the Open Season End Date to minimize the risk that any e-mail delay could cause a bid to be excluded from consideration.

Bid sheets must include the bidder's name, the name of this Open Season (i.e., “Permian West Expansion Open Season”), the quantity of Project Capacity for each Primary Receipt Point and Primary Delivery Point combination, the term for all combinations, and the rate for each combination. For each combination indicated, the bidder must select only one of the reservation rate options provided in the form bid sheet.

By submitting a bid sheet, a bidder certifies that: (a) all information contained in its bid sheet is complete, true, and accurate in all respects; (b) it satisfies, or will be able to satisfy, all the requirements of the Tariff and the requirements of this Open Season; and (c) the person submitting the bid sheet has full authority to bind the bidder.

A bidder may have only one bid sheet pending for evaluation at a time in this Open Season. A submitted bid sheet for this Open Season, however, may be withdrawn by providing written notice of withdrawal to Transporter prior to the Open Season End Date and using the same process as submitting bid sheets as described above. Transporter will use the time and date stamp on Transporter's e-mail box to determine a timely withdrawal. Once a submitted bid sheet is withdrawn, another subsequent bid sheet may be submitted by the same bidder if and only if the subsequent bid is at a higher present value (“PV”). Any subsequent bid with a PV equal to or lower than the withdrawn bid will be considered invalid.

Bids submitted in this Open Season on or before the Open Season End Date that have not been properly withdrawn or considered invalid will constitute a binding irrevocable offer by the bidder to contract for capacity. The award of capacity in this Open Season will be an acceptance of the offer and the parties shall be contractually bound at that time.

In addition to the bid rate(s), each bidder shall be subject to the applicable maximum usage rate and maximum usage surcharges, all other maximum rates, charges and surcharges, including ACA, Fuel and Lost and Unaccounted-for gas (“L&U”), and any other authorized surcharges assessed under the applicable Rate Schedule of the Tariff as may change from time to time. This includes incremental lateral charges and any third-party charges resulting from the use of capacity that Transporter may hold on other pipelines.

Transporter reserves the right to reject bids that are incomplete, contain offers of varying rates within the term, contain additional or modified terms, or are inconsistent with the provisions of the Tariff or this Open Season. Transporter will not consider bids that reflect varying quantities during the same month year over year for the duration of the term. Finally, unless the term begins on the In-Service Date, the term must begin on the first day of the applicable month, and, in all cases, end on the last day of the applicable month.

Transporter reserves the right to seek clarification of any bid (including, without limitation, the rate, quantity, term, or receipt or delivery point(s)) but shall not be required to do so. To be considered, any responding clarification by bidders must be provided in writing and within the time requested by Transporter. Such clarifications shall be incorporated as part of the binding bid submitted by the bidder and, in the case of conflict with the earlier submitted binding bid, the timely submitted written clarification shall control.

Bids must provide that, subject at all times to FERC's approval of the particular costs, cost recovery mechanism(s) and manner of recovery in question, Transporter shall be entitled to recovery of Greenhouse Gas Emissions Costs incurred by Transporter attributable to natural gas transported for bidder. As used herein “Greenhouse Gas Emissions Costs” means (a) the cost of any carbon emissions tax or other greenhouse gas assessment that is imposed on Transporter, and/or (b) the cost of any greenhouse gas mitigation efforts, including the costs of credits and offsets that Transporter incurs to comply with any greenhouse gas laws, rules or regulations. If (x) Transporter is unsuccessful in having the FERC-approved Greenhouse Gas Emissions Costs incurred by it recovered through a FERC-approved surcharge applicable to all shippers, and (y) such amounts are recoverable only through Transporter's FERC-approved recourse rates, then bidder will agree to modify the negotiated reservation rate by the amount of Transporter's maximum reservation rate under Rate Schedule FT-1 that is attributable to such Greenhouse Gas Emissions costs.

Transporter notes that FERC Order No. 894, in some cases, prohibits multiple affiliates of the same entity from bidding in an open season for capacity in which the pipeline may allocate capacity on a pro rata basis. The restrictions imposed by FERC Order No. 894 may be applicable in this Open Season and Transporter recommends that potential bidders review and adhere to the requirements of that FERC Order.

Creditworthiness Requirements:

Successful bidder(s) must demonstrate, and maintain throughout the term of the applicable FTSA, satisfaction of creditworthiness in the manner set forth below:

(a)           If a bidder is rated by Standard & Poor's Corporation (“S&P”) and/or Moody's Investor Service (“Moody's”) (hereinafter referred to as a “Rated Bidder”), then the Rated Bidder shall be deemed creditworthy by Transporter if: (i) the Rated Bidder's senior unsecured debt securities are rated at least BBB- by S&P or Baa3 by Moody's (in the event the Rated Bidder is rated differently by multiple agencies, the lowest rating shall be used in making such determination); and (ii) the Rated Bidder is not under review for possible downgrade by S&P and/or Moody's to a level below that set forth in subpart (i) of this paragraph (a).

(b)           If at any time prior to or during the term of any FTSA executed in connection with this Open Season, a Rated Bidder's S&P or Moody's rating falls below the levels described above, or a Rated Bidder becomes unrated or otherwise fails to satisfy the requirements of paragraph (a) above, then for the time period that the Rated Bidder's ratings are below that level or a Rated Bidder is unrated or is otherwise unable to satisfy the requirements of paragraph (a) above, Rated Bidder shall satisfy its creditworthiness obligation by providing one of the forms of credit support described in paragraph (c) below. If a Rated Bidder subsequently becomes able to satisfy the S&P or and Moody's rating levels described in paragraph (a) above, the Rated Bidder may immediately satisfy its creditworthiness obligations in the manner provided in paragraph (a) above.

(c)           If at any time and from time to time bidder is unable to satisfy its creditworthiness obligations in the manner set forth in paragraph (a) above, then bidder shall satisfy its creditworthiness obligations by providing and maintaining, at its option: (i) an irrevocable, unconditional guarantee of its obligations in connection with this Open Season, and any related FTSA executed in connection with this Open Season, reasonably acceptable to Transporter, and issued by another person or entity which satisfies the creditworthiness standards set forth in paragraph (a); or (ii) an irrevocable letter of credit from a bank reasonably acceptable to Transporter, and equal to the lesser of 36 months, or the period of time remaining in the term, of the anticipated charges in connection with this Open Season, and any related FTSA executed in connection with this Open Season; or (iii) such other credit arrangements which are mutually agreed to by Transporter and bidder, and which are accepted by Transporter on a nondiscriminatory basis.

To the extent evidence of bidder's creditworthiness is not publicly available, upon reasonable request by Transporter, bidder shall promptly provide evidence to Transporter of bidder's creditworthiness, which Transporter may share with its lenders or creditors or any nationally recognized rating agency that is then maintaining a rating of Transporter's debt securities.

If any change in ratings or conditions requires bidder to change the manner in which it demonstrates its satisfaction of its creditworthiness requirements, bidder shall make that demonstration (including, if necessary, the provision of any irrevocable unconditional guarantee or irrevocable letter of credit) within 15 Business Days of the change in ratings or conditions requiring the new demonstration of creditworthiness.

Bidders that fail to satisfy the creditworthiness requirements of this section within a reasonable time will have their capacity award withdrawn. Transporter reserves the right to seek any and all permitted remedies as a result of the breach of the bid. Transporter will treat any financial statements provided by bidders as confidential.

Execution of FTSA:

Each successful bidder and Transporter shall enter into and execute a Firm Transportation Service Agreement (a “FTSA”) reflecting the terms of its bid as awarded by Transporter. All successful bidders shall execute and return a FTSA within the earlier of the day before the first day of the term of firm transportation service in the bid as awarded by Transporter or 20 Business Days following the day Transporter tenders the FTSA to the bidder (“Execution Date”). If a successful bidder fails to fully execute and return the FTSA on or before the Execution Date, then Transporter reserves the right to cancel the successful bidder's binding bid without prejudice as to Transporter's right to seek any and all permitted remedies as a result of the successful bidder's failure to execute the FTSA. The FTSA will be in the form contained in the Tariff, with certain additional non-confirming provisions consistent with the requirements and conditions set forth in this Open Season related to creditworthiness and the construction of incremental facilities required to provide transportation service. A contractual right of first refusal (“ROFR”) is offered with the Project Capacity and will be included in the FTSA. Transporter and any successful bidder may mutually agree to enter into and execute more than one FTSA that together reflect all the terms of the successful bid as awarded by Transporter. If a successful bidder is awarded Project Capacity with Primary Delivery Points located in more than one delivery zone as provided in the Tariff, Transporter reserves the right to require the parties enter into and execute more than one FTSA, with each FTSA providing for deliveries to a single delivery zone (provided that, collectively, the FTSAs reflect all the terms of the successful bid as awarded by Transporter).

The FTSA will include a provision that, with respect to any redesignation of a Primary Delivery Point originally located on the upstream/suction side of the Florida CS capacity constraint to a location through (i.e., downstream of) the Florida CS capacity constraint made in accordance with the Tariff, the applicable reservation rate for such redesignated Primary Delivery Point shall be equal to the higher of: (a) the applicable negotiated reservation rate provided in the FTSA, (b) $0.60 per Dth/day (equal to $18.25 per Dth/month), and (c) the applicable maximum reservation rate for the Primary Receipt Point and Primary Delivery Point of such redesignation.

Existing shippers that currently hold firm capacity on Transporter's pipeline system that overlaps or is contiguous with awarded Project Capacity that wish to combine such capacity with awarded Project Capacity into a single FTSA, may request, and Transporter will consider, that the parties amend, and if applicable combine, the applicable existing contract(s) to include the awarded Project Capacity therein as further provided in and consistent with the provisions of Section 4.15 of the General Terms and Conditions of the Tariff (e.g., the term of the existing contract(s) will be extended to match the bid term of the awarded Project Capacity).

Evaluation Criteria:

If Transporter receives acceptable bids for capacity in excess of the actual amount of available capacity, then Transporter will award and/or allocate the capacity in a manner that yields the highest total PV as calculated below. In determining which bid(s) yield the highest total PV, Transporter reserves the right to combine multiple bids (or identified capacity combinations), in whole or in part, in a manner that results in a total PV of the combined bids that exceeds the highest PV achievable by accepting one or more of the disaggregated bids. This process could result in a bidder being awarded less capacity than requested (unless such bidder elects on its bid sheet not to accept an allocation of capacity) and/or a bidder being awarded only one (or a portion of one) of its identified Primary Receipt Point/Primary Delivery Point capacity combinations.

With respect to each capacity combination identified by a bidder, the PV of such combination will be calculated as the sum of the present values for all of the months beginning with the first month capacity is available through the end date of the applicable bid term. The PV of a bid will be the sum of the PVs of all capacity combinations identified in the bid.

The PV for each month will be calculated as follows: PV = (R x Q)/((1+i) to the power of n)

Where: R = the monthly reservation bid rate

Q = the monthly bid volume

i = the monthly discount rate of 0.6300% (which is the annual discount rate of 7.50% divided by 12)

n = with respect to a month during the bid term during which revenue will be received, the number of months from January 1, 2027 (such date being the earliest date the Project Capacity is expected to be available in this Open Season) (for example, n = 1 for January 2027, n = 2 for February 2027, and so on)

Additional Reservations and Conditions:

Bids for some or all of the Project Capacity at rates stated in the Tariff, including maximum recourse rate bids, may not provide sufficient economic justification for Transporter's capital investment in the Expansion Project Facilities. Accordingly, Transporter reserves the right to reject all bids received in connection with this Open Season and cancel the proposed Expansion Project Facilities if it does not receive adequate bids for quantities and terms that are necessary to economically justify capital investment in the Expansion Project Facilities.

Construction of the Expansion Project Facilities is subject to Transporter's receipt of the appropriate management committee and/or board of directors of Transporter and/or its parent companies consents and authorizations and Transporter's timely receipt of all necessary regulatory approvals, permits, and other authorizations required for the construction and operation of the Expansion Project Facilities, in form and substance satisfactory to Transporter in its sole discretion.

Although this is a binding Open Season, Transporter reserves the right, in its sole discretion, to consider requests received after the Open Season End Date, including requests to modify a bidder's validly submitted bid, but will be under no obligation to do so. Requests for capacity received after the Open Season End Date will be subject to the terms and conditions set forth in this Open Season.

Transporter reserves the right to, upon notice at any time and in its sole discretion, terminate this Open Season, extend any date or time specified in this Open Season, amend or supplement the terms of this Open Season, or otherwise modify this Open Season. In addition, Transporter reserves the right to reject any bid which fails to comport with the provisions of this Open Season in any respect.

Capitalized terms used and not otherwise defined herein shall have the meanings given to such terms in the Tariff.

Contact Information:

Questions concerning this Open Season should be directed to:

Tim Dorpinghaus            (719) 520-4245

Ken Ulrich                          (719) 520-3712

Beth Gerber                      (719) 520-4856

Open Season Binding Bid Sheet Follows

OPEN SEASON BINDING BID SHEET

**Permian West Expansion Open Season**

E-mail Bid To: KMWestBids@KinderMorgan.com

A.            Bidder Information:

Legal Name of Bidder:                                                                                                 

Name of Requesting Party:                                                                                                                                                                       

Title of Requesting Party:                                                                                                                                                                                           

DUNS Number:                                                                                                              

Phone:                                                                                                                                                

B.            Requested Service Term:

Requested Term Start Date:                                                       (either the Expansion Project Facilities in-service date or a specific date)

Note: A Requested Term Start Date shall not be earlier than January 1, 2027. For bids with a term starting on the Expansion Project Facilities in-service date, the present value calculation will assume a start date of January 1, 2027.

                Requested Term End Date:                                                       

C.           Project Capacity Allocation:

Will bidder accept an allocation of Project Capacity ☐  Yes ☐  No

Note: Additional details regarding allocation of Project Capacity are provided under the heading “Evaluation Criteria” in the Permian West Expansion Open Season notice.

D.           Requested Transportation Contract Demand and Reservation Rate(s) (Rate Schedule FT-1): (Note: All Primary Receipt Points should be within the Permian Basin.)

(1)           Primary Delivery Point Location: Through Cornudas CS to upstream of Hueco CS

(2)           Primary Delivery Point Location: Through Hueco CS to upstream of El Paso CS

(3)           Primary Delivery Point Location: Through El Paso CS to upstream of Florida CS

(4)           Primary Delivery Point Location: Through Florida CS to upstream of Lordsburg CS

(5)           Primary Delivery Point Location: Through Lordsburg CS to upstream of Dragoon CS

¹ If Shipper lists a new Primary Delivery Point, the FTSA will include a condition that service is subject to the construction of New Meter Facilities and reimbursement of associated costs as further provided in the Permian West Expansion Open Season notice.

² A Negotiated Rate is not subject to the applicable maximum or minimum rates stated in Transporter's Federal Energy Regulatory Commission Gas Tariff, Third Revised Volume No. 1A (as the same may be amended from time to time, the “Tariff”), as such rates may change from time to time.

³ A daily Negotiated Rate will be converted to a monthly rate by multiplying the daily rate times 365 and dividing the result by 12, rounded to the fourth decimal place.

⁴ The Maximum Tariff Rate is the applicable maximum rate stated in the Tariff, as such rate may change from time to time.

E.            Applicability of Usage and Other Charges:

In addition to the bid rate(s), successful bidders will be subject to the applicable maximum usage rate and maximum usage surcharges, all other maximum rates, charges and surcharges, including ACA, Fuel and L&U, and any other authorized surcharges assessed under the applicable Rate Schedule of the Tariff as may change from time to time. This includes incremental lateral charges and any third-party charges resulting from the use of capacity that Transporter may hold on other pipelines.

F.            Permian Basin Receipt Point Capacity:

For reference, the following table sets forth the available capacity at certain Permian Basin Receipt Points as of the Open Season Start Date. Please contact your service representative or any of the individuals listed below to confirm capacity availability or for additional information regarding available capacity at other Receipt Points. Transporter does not guarantee that capacity at a Receipt Point will remain available until Project Capacity is awarded to a bidder.

* By submitting this binding bid to Transporter, the bidder certifies that (a) all information contained in the request is complete, true, and accurate, (b) it satisfies, or will be able to satisfy, all the requirements of the Tariff and the requirements set forth in the Permian West Expansion Open Season notice, and (c) the person submitting the bid has full authority to bind the bidder.