TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 103750 Notice Type: Rates and Charges Subject: NORTHERN FILES RATE CASE SETTLEMENT Critical: N Post Date/Time: 03/17/2026 03:15 PM Notice Status: Initiate For Gas Day(s): 03/17/2026 - 04/30/2026 Notice Effective Date/Time: 03/17/2026 03:15 PM Notice End Date/Time: 05/01/2026 08:59 AM Required Response Indicator Description: 5-No response required Notice Text: Northern Natural Gas filed a settlement with the Federal Energy Regulatory Commission to resolve the pending section 4 rate case. Since Northern's last rate case in 2022, Northern has invested $1.6 billion in the reliability, modernization and regulatory compliance of its system. The settlement is designed to resolve all issues in the rate proceeding and provide Northern customer's with rate stability. As part of the settlement, Northern and its customers agreed to a rate case moratorium until July 1, 2027. Northern implemented the settlement rates effective February 1, 2026, and will provide refunds within 60 days of a final order approving the settlement. If you have any questions, please contact your marketing representative.