TSP Name:                                  Northern Natural Gas Company
TSP:                                       784158214
Notice ID:                                 100045
Notice Type:                               Rates and Charges
Subject:                                   RATE CASE - INTERIM RATES AND DEFERRED COLLECTION AGREEMENT
Critical:                                  N
Post Date/Time:                            12/18/2025 05:25 PM
Notice Status:                             Initiate
For Gas Day(s):                            12/18/2025 - 01/30/2026
Notice Effective Date/Time:                12/18/2025 05:25 PM
Notice End Date/Time:                      01/31/2026 12:00 AM
Required Response Indicator Description:   5-No response required

Notice Text: 

  
    


    
      Northern will be filing a motion to
implement the suspended tariff rates associated with Docket No. RP25-989 to be
effective January 1, 2026. In furtherance of settlement discussions, Northern
is also proposing to implement lower interim reservation rates compared to
filed rates for the Market Area and the Field Area. Northern's proposed interim
rates reflect an approximate 17% reduction below the Market Area filed rates
and a 29% reduction below the Field Area filed rates.
       
      The interim transportation rates that Northern expects to
implement are presented on the table below. At the present time, Northern is
still evaluating the storage rates. Northern anticipates that the interim
storage rates will be close to the filed storage rates. 
    
    


    
      
        
    
    


    
      As it has done in the past, Northern is
offering customers an opportunity to enter into a Deferred
Collection Agreement. In exchange for a customer's agreement that it sees a
path to settlement, Northern will agree to defer collection of the difference
between the billed interim rates (applicable tariff rates) and the proposed
settlement rates beginning January 1, 2026, as more fully described in the
Deferred Collection Agreement. 
    
    


    
      
    
    


    
      


      
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 
 
  
  
  
 

        
        
          
            
            
              
  
              
                
                  Reservation
                
              
              
  
            
            
            
              
  
              
                
                  Filed
  Rates
                
              
              
  
            
            
            
              
  
              
                
                  Interim
  Rates
                
              
              
  
            
            
          
          
          
            
            
              
  
              
                TF12 Base Summer
              
              
  
            
            
            
              
  
              
                $ 17.903
              
              
  
            
            
            
              
  
              
                $ 16.257
              
              
  
            
            
          
          
          
            
            
              
  
              
                TF12 Base Winter
              
              
  
            
            
            
              
  
              
                $ 32.225
              
              
  
            
            
            
              
  
              
                $ 29.263
              
              
  
            
            
          
          
          
            
            
              
  
              
                TF12 Variable Summer
              
              
  
            
            
            
              
  
              
                $ 17.903
              
              
  
            
            
            
              
  
              
                $ 16.257
              
              
  
            
            
          
          
          
            
            
              
  
              
                TF12 Variable Winter
              
              
  
            
            
            
              
  
              
                $ 43.682
              
              
  
            
            
            
              
  
              
                $ 39.667
              
              
  
            
            
          
          
          
            
            
              
  
              
                TF5
              
              
  
            
            
            
              
  
              
                $ 47.740
              
              
  
            
            
            
              
  
              
                $ 43.353
              
              
  
            
            
          
          
          
            
            
              
  
              
                TFX Market Summer
              
              
  
            
            
            
              
  
              
                $ 17.903
              
              
  
            
            
            
              
  
              
                $ 16.257
              
              
  
            
            
          
          
          
            
            
              
  
              
                TFX Market Winter
              
              
  
            
            
            
              
  
              
                $ 47.740
              
              
  
            
            
            
              
  
              
                $ 43.353
              
              
  
            
            
          
          
          
            
            
              
  
              
                SMS Reservation
              
              
  
            
            
            
              
  
              
                
                   $ 7.8726
              
              
  
            
            
            
              
  
              
                
                   $ 7.1490
              
              
  
            
            
          
          
          
            
            
              
  
              
                TFX Field Summer
              
              
  
            
            
            
              
  
              
                $ 17.180
              
              
  
            
            
            
              
  
              
                $ 14.970
              
              
  
            
            
          
          
          
            
            
              
  
              
                TFX Field Winter
              
              
  
            
            
            
              
  
              
                $ 30.925
              
              
  
            
            
            
              
  
              
                $ 26.952
              
              
  
            
            
          
          
          
            
            
            
            
            
            
            
          
          
          
            
            
              
  
              
                
                  Commodity
                
              
              
  
            
            
            
              
  
              
                
                  Filed
  Rates
                
              
              
  
            
            
            
              
  
              
                
                  Interim
  Rates
                
              
              
  
            
            
          
          
          
            
            
              
  
              
                Market TF/TFX Firm
              
              
  
            
            
            
              
  
              
                $ 0.0228
              
              
  
            
            
            
              
  
              
                $ 0.0228
              
              
  
            
            
          
          
          
            
            
              
  
              
                Market TI Summer
              
              
  
            
            
            
              
  
              
                $ 0.6117
              
              
  
            
            
            
              
  
              
                $ 0.5575
              
              
  
            
            
          
          
          
            
            
              
  
              
                Market TI Winter
              
              
  
            
            
            
              
  
              
                $ 1.5932
              
              
  
            
            
            
              
  
              
                $ 1.4488
              
              
  
            
            
          
          
          
            
            
              
  
              
                Market GS-T
              
              
  
            
            
            
              
  
              
                $ 2.1952
              
              
  
            
            
            
              
  
              
                $ 1.9954
              
              
  
            
            
          
          
          
            
            
              
  
              
                SMS commodity
              
              
  
            
            
            
              
  
              
                $ 0.0208
              
              
  
            
            
            
              
  
              
                $ 0.0208
              
              
  
            
            
          
          
          
            
            
              
  
              
                Field TFX/100 mi
              
              
  
            
            
            
              
  
              
                $ 0.0082
              
              
  
            
            
            
              
  
              
                $ 0.0082
              
              
  
            
            
          
          
          
            
            
              
  
              
                Field TI/100 mi summer
              
              
  
            
            
            
              
  
              
                $ 0.2223
              
              
  
            
            
            
              
  
              
                $ 0.1947
              
              
  
            
            
          
          
          
            
            
              
  
              
                Field TI/100 mi winter
              
              
  
            
            
            
              
  
              
                $ 0.3935
              
              
  
            
            
            
              
  
              
                $ 0.3440
              
              
  
            
            
          
          
        
      
      


    
    


    
      
    
    


    
      If you have any questions, please contact Tom Halpin or your
marketing representative.