TSP Name:                                  Northern Natural Gas Company
TSP:                                       784158214
Notice ID:                                 101571
Notice Type:                               Force Majeure
Subject:                                   UPDATE 4: FORCE MAJEURE - CARLTON AREA
Location:                                  MARKET AREA
Critical:                                  Y
Post Date/Time:                            01/26/2026 04:03 PM
Notice Status:                             Supersede
Prior Notice:                              101143
For Gas Day(s):                            01/21/2026 - 02/19/2026
Notice Effective Date/Time:                01/21/2026 04:05 PM
Notice End Date/Time:                      02/20/2026 08:59 AM
Required Response Indicator Description:   5-No response required
Reason:                                    Force Majeure

Notice Text: 


Update
4: Northern
continues to make strong progress and is ahead of the original schedule for the
completion of the temporary bypass pipeline being constructed near Willow
River, Minnesota. A pressure test of the bypass is planned for the week of
January 26, 2026. If the test is successful, Northern expects to revise its
estimate and place the line in service for Gas Day Sunday, February 1, 2026.



Northern
will continue to provide updates as the project advances or if any material
changes to the schedule occur.



If you
have any questions, please contact your marketing or customer service
representative.



Update
3: Northern
continues its work on the impacted pipeline segment of its mainline near Willow
River, Minnesota. The cause of the incident remains under investigation and is
currently unknown. The repair plan requires the replacement of more than 2,000
feet of 20-inch-diameter mainline pipe. Northern is constructing a 2,400-foot temporary bypass around the
incident site to support the ongoinginvestigation by Northern and the
Department of Transportation. The necessary materials, equipment and personnel are
being mobilized as quickly as possible, despite challenging weather conditions.
Based on
current projections, this work is estimated to be completed mid-February.



Update
2: Northern
has isolated the impacted pipeline segment of its mainline near Willow River,
Minnesota, and has begun executing a repair plan. Northern is proceeding as
quickly as possible under challenging weather conditions to mobilize the
necessary materials, equipment and personnel to provide a temporary replacement
of the impacted pipeline. At this time, Northern estimates that this work will
be completed by mid-February. Updates will be provided as the repairs progress,
with the next update coming no later than Wednesday, January 21, 2026. 



The operating
capacity at the points outlined below remains unchanged at this time.



Northern
has called a Carlton Obligation at 50% for Gas Day Wednesday, January 21, 2026.
Provided Northern continues to receive adequate supply at the points listed below,
any Carlton penalty resulting from an allocation at the points listed below
will be waived.



To help ensure
system integrity, Northern will not accept any incremental SMS requests for
less than an annual term, the remaining term of an existing agreement or five
years until otherwise noted. 



Update
1: Inspection
of the impacted pipeline segment is ongoing. Northern is conducting an investigation
into the cause of the incident and developing a return to service plan. At this
time, a return to service date is not known. Updates will be provided as the
repair plan develops, with the next update coming no later than Monday, January
19, 2026. At this time, the capacity impacts at the five points described below
remain unchanged.



Original
Notice: Northern
has experienced a Force Majeure event between the Hinckley, Minnesota, and
Carlton, Minnesota, compressor stations located near Willow River, Minnesota,
which requires operating capacity to be lowered to a combined 225,000 Dth/day
effective immediately and until further notice at the following points. 



·
GRLKS/NNG
Carlton (POI 388)

·
GRLKS/NNG
Wakefield (POI 21972)

·
GRLKS/NNG
Grand Rapids (POI 78994)

·
Semco
Marquette M-35 (POI 79374)

·
Semco
Marquette Emergency Receipt (POI 79379)



Incremental
nominations at these points may not be accepted for the Intraday 3 nomination cycle
for Gas Day Friday, January 16, 2026. Northern will be required to allocate the
points to the reduced combined operating capacity of 225,000 Dth/day beginning
with the Evening nomination cycle for Gas Day Saturday, January 17, 2026, and
continuing until resolved.



Northern
has called a Carlton Obligation beginning with Gas Day Saturday, January 17,
2026. The Carlton Obligation will remain in effect. Provided Northern continues
to receive the 225,000 Dth of supply at the points listed above, any Carlton penalty
resulting from an allocation at the points listed above will be waived.



Please
continue to monitor Northern's website for updates.



Please
see Operationally Available Capacity on Northern's
website for current flow information and the Market Area Group Allocation Maps for a list of
impacted points.