TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 101474 Notice Type: Operational Alert/SOL Subject: SOL - GAS DAY TUESDAY, JANUARY 27, 2026 - MARKET AREA Location: MARKET AREA Critical: Y Post Date/Time: 01/25/2026 03:00 PM Notice Status: Initiate For Gas Day(s): 01/27/2026 MID/Zone: ABC, D, EF SMS %: Zone ABC 0%, Zone D 0%, Zone EF 0% Notice Effective Date/Time: 01/27/2026 09:00 AM Notice End Date/Time: 01/28/2026 08:59 AM Required Response Indicator Description: 5-No response required Notice Text: An SOL has been called for all Market Area zones (ABC, D and EF)with 0% SMS available for Gas Day Tuesday, January 27, 2026, due to lower-than-normal system-weighted temperatures. DDVC penalties are applicable to the bumped shipper's quantity.