TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 088274 Notice Type: TSP Capacity Offering Subject: OPEN SEASON FOR NORTHERN LIGHTS 2027 EXPANSION - VENTURA NORTH Critical: N Post Date/Time: 04/10/2025 01:16 PM Notice Status: Initiate For Gas Day(s): 04/10/2025 - 05/15/2025 Notice Effective Date/Time: 04/10/2025 01:15 PM Notice End Date/Time: 05/15/2025 05:00 PM Required Response Indicator Description: 5-No response required Notice Text: Northern Natural Gas Company (Northern) is hereby soliciting binding bids for firm throughput service from NBPL/NNG Ventura (POI 192), NBPL/NNG Marshall (POI 204), NBPL/NNG Welcome (POI 1665), GRLKS/NNG Carlton (POI 388), Great Lakes/NNG Grand Rapids (POI 78994), Great Lakes/NNG Wakefield (POI 21972), Viking/NNG Polk (POI 62983) Viking Chisago/Isanti (POI 196), or Viking/NNG Pierz (POI 61667) to delivery points located north of the Ventura, Iowa, compressor station in Northern's Market Area (LINK TO MAP) for firm service commencing on or after November 1, 2027. Northern anticipates that the construction of facilities will be required to provide requested service for November 1, 2027 (Project). Interested customers may request firm throughput service by submitting a signed binding Bid Form. Customers requesting service are responsible for ensuring arrangements have been made for any capacity necessary on any upstream or downstream pipeline for their volumes to be confirmed during the nomination and scheduling process. Northern will develop the Project subject to certain conditions including, but not limited to, securing contractual commitments for incremental firm throughput service with rates and terms sufficient to justify the Project economics, and receipt of all necessary regulatory approvals. The actual in-service date of the Project, or any portion thereof, is subject to the timing of regulatory approvals and the subsequent construction required. Northern reserves the right to include in the Project only service and facilities that Northern determines can reasonably be approved and in service on a timely basis. Open Season Timing The open season commences on Thursday, April 10, 2025, and ends at 5:00 p.m. CCT on Thursday, May 15, 2025. To be considered in the open season, customers' signed binding Bid Form must be received by the close of the open season at 5:00 p.m. CCT on Thursday, May 15, 2025. Volumes that Northern is obligated to serve (i.e., existing contractual growth rights) are deemed part of this open season. If you have any questions, please contact your Account Manager or Mike Barry at (402) 398-7105. Open Season Procedures 1. Submit your binding Bid Form to Northern either via facsimile to (402) 398-7413 or e-mail to NNGOpenSea@nngco.com. The Bid Form must include the requested volume, receipt point, delivery point(s), rate and term. 2. The following receipt points will be considered in this open season: NBPL/NNG Ventura (POI 192), NBPL/NNG Marshall (POI 204), NBPL/NNG Welcome (POI 1665), GRLKS/NNG Carlton (POI 388), Great Lakes/NNG Grand Rapids (POI 78994), Great Lakes/NNG Wakefield (POI 21972), Viking Chisago/Isanti (POI 196), Viking/NNG Polk (62983) or Viking/NNG Pierz (61667). Depending on the delivery points selected in the open season, availability of a particular receipt point may be limited. Northern will work with partcipants to allocate receipt point capacity among the requests in order to optimize the amount of service that can be provided. 3. The maximum reservation rate is binding for the firm throughput service. 4. The rates necessary for service may change based on the actual cost of the Project. The actual costs will include any reservation charge credits paid by Northern to other customers as a result of the construction of the Project. A reservation rate higher than Northern's maximum tariff rate for firm service may be necessary to justify the Project economics. The term may be extended to cover construction costs. Alternatively, customers may pay Northern's maximum tariff rates and provide a contribution in aid of construction for its proportionate share of the construction costs. In the event a reservation rate that is higher than the maximum tariff rate or a longer term is required, the customer will be informed in writing of such reservation rate and term. Within 10 calendar days upon receipt of the notification from Northern of a higher reservation rate or longer term, customer shall provide written notice to Northern whether it is terminating its participation in the Project or agreeing to proceed with the Project at the higher reservation rate or longer term. If the customer fails to respond, the customer will be deemed to have terminated its participation. 5. If customer does not have existing contractual rights, the customer must sign an agreement for construction of the necessary facilities for the Project within 30 calendar days after tender by Northern. The agreement will be designed for the service requested by each customer, and obligates customer for its allocated share of capital costs. Northern and customer may agree to other terms specific to the facilities or service provided pursuant to this open season. 6. Northern may consider contingencies in the bids. 7. Transportation contracts are to be executed by customers within 30 calendar days of tender by Northern. 8. Northern and customer may agree to amend the service agreement, as allowed by Northern's Tariff, at any time after award of the capacity. 9. Realignments may be considered as part of this open season. Customers will be responsible for the construction costs for any facility modifications required to provide any requested realignment. 10. Customer(s) must meet the creditworthiness provisions of Northern's Tariff. Upon request by Northern, customer shall provide appropriate credit assurance, including credit assurance for the construction of facilities, within 10 calendar days of Northern's request. 11. The results of this open season will be posted on Northern's website. Solicitation of Turn Back Capacity Firm customers who currently hold capacity in Northern's Market Area that may be used to reduce construction must notify Northern in writing if they wish to permanently relinquish their capacity. The written notification must be received by Northern prior to the expiration of the open season in order for Northern to determine the need for, extent and feasibility of the use of such capacity for the proposed Project