No. 29545 DEPARTMENT OF PUBLIC SERVICE REGULATION BEFORE THE PUBLIC SERVICE COMMISSION OF THE STATE OF MONTANA In re NorthWestern Energy's Annual Natural Gas Tracker Application for Interim and Final Rate Adjustments Docket 2022.07.077 June 19, 2023 Notice of Application and Intervention Deadline On May 31, 2023, NorthWestern Corporation d/b/a NorthWestern Energy ("NorthWestern") filed with the Montana Public Service Commission ("Commission") its Annual Natural Gas Tracker Application for Interim and Final Rate Adjustments ("Application"). In its Application, NorthWestern proposes the following adjustments to its natural gas rates: * An increase in residential natural gas supply rates from the current $0.215177 per therm to $0.287153 per therm. * An increase in general service natural gas supply rates from the current $0.215848 per therm to $0.287824 per therm. * An increase in firm utility natural gas supply rates from the current $0.217547 per therm to $0.289523 per therm.