TSP Name:                                  Northern Natural Gas Company
TSP:                                       784158214
Notice ID:                                 100319
Notice Type:                               Rates and Charges
Subject:                                   UPDATE 1: RATE CASE - INTERIM RATES AND DEFERRED COLLECTION AGREEMENT
Critical:                                  N
Post Date/Time:                            12/29/2025 04:32 PM
Notice Status:                             Supersede
Prior Notice:                              100045
For Gas Day(s):                            12/29/2025 - 01/30/2026
Notice Effective Date/Time:                12/29/2025 04:32 PM
Notice End Date/Time:                      01/31/2026 12:00 AM
Required Response Indicator Description:   5-No response required

Notice Text: 


UPDATE 1: In reference to the Deferred Collection Agreement referenced
in paragraph two below, this update is to provide additional clarification
regarding the Deferred Collection Agreement.



1. To ensure inclusion in the January 2026 billing cycle,
signed Deferred Collection Agreements must be returned to Northern by January
23, 2026. Agreements returned after this date will be processed on a
commercially reasonable basis to accommodate January billing. 

2. To ensure accurate crediting, billing and tracking of
deferred balances, Deferred Collection Agreements are not applicable to
temporary capacity release transactions.

3. Customers belonging to a rate case shipper group may sign
Deferred Collection Agreements. There is no requirement that all members of a
shipper group sign Deferred Collection Agreements for individual customers in
the shipper group to participate.



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



ORIGINAL NOTICE: 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 on Northern's pipeline system an opportunity to enter into a
Deferred
Collection Agreement. In exchange for 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