TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 087742 Notice Type: TSP Capacity Offering Subject: OPEN SEASON FOR FIELD AND FIELD TO DEMARC CAPACITY BEGINNING NOVEMBER 2025 Critical: N Post Date/Time: 03/31/2025 03:53 PM Notice Status: Initiate For Gas Day(s): 03/31/2025 - 06/25/2025 Notice Effective Date/Time: 03/31/2025 03:53 PM Notice End Date/Time: 06/25/2025 05:00 PM Required Response Indicator Description: 5-No response required Notice Text: Northern is hereby announcing an open season effective immediately for all available Field Area capacity for service commencing on November 1, 2025. Northern will provide further open season details in a future notice approximately two weeks prior to the close of the open season. The duration of this open season will not exceed 60 business days. From time to time, Northern may release and post portions of open season capacity for requests for incremental or realignment volumes from customers that can be bid upon prior to the open season close. Please call your marketing representative with any questions.