Northern Border Pipeline (NBPL) (Canada, Midwest): 30 active notices, 5 rated severity 4–5; 0 posted in the last 7 days. 1 outage in effect today (no volume stated) at Estelline Compressor Station 11. Capacity Offline →
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Northern Border Pipeline (NBPL)
Construction and Maintenance Schedule - Updated October 13, 2026
Northern Border Pipeline declared force majeure effective September 26, 2026 due to an unplanned equipment failure at Compressor Station 11 (CS11) near Estelline. As a result, NBPL is restricting nominated volumes for Flow Past Glen Ullin (GlenSEG) to 2,152 MMcf/d (2.152 Bcf/d) effective timely September 26, continuing until further notice. Prior to the restriction, GlenSEG was running at 99.8% utilization (2.52 Bcf/d scheduled against 2.53 Bcf/d operating capacity), implying a capacity reduction of approximately 0.378 Bcf/d from current scheduled flows.
NBPL force majeure at CS11 imposes a 2.152 Bcf/d cap at GlenSEG -- cutting roughly 0.378 Bcf/d from current timely-cycle nominations of 2.52 Bcf/d -- with no restoration timeline; expect bullish pressure at Northern Border Ventura TP (most recently -0.435 vs Henry Hub on 2026-09-24, trailing 5-day average -0.476) and at Chicago Citygate as Canadian/Bakken supply into the Midwest is curtailed.
Reroute: Limited: Alliance Pipeline (not monitored) provides an alternative Canadian import corridor into Chicago, but volumes are typically fully subscribed and cannot be expected to absorb a sudden 0.378 Bcf/d diversion; no other large-diameter pipe replicates NBPL's Western Canada/Bakken-to-Midwest flow path.
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Northern Border Pipeline (NBPL)
LIFTED-Effective Immediately-Force Majeure: St Anthony Compressor 7
NBPL has declared a Force Majeure effective evening September 11, 2026 due to an unplanned equipment failure at Compressor Station 07 (CS07) near St. Anthony, ND. As a result, nominated volumes past Glen Ullin (GlenSEG) are restricted to 2,160 MMcf/d (2.160 Bcf/d) until further notice. Pre-event capacity data from the prior gas day (September 10) shows GlenSEG already running at 99.4% utilization (2.52 Bcf/d scheduled against 2.53 Bcf/d operating capacity), meaning the new 2.160 Bcf/d cap represents a reduction of approximately 0.37 Bcf/d from already near-full flow; note the capacity table predates the FM by one gas day and does not yet reflect the restriction.
NBPL FM at CS07 caps GlenSEG flows at 2.160 Bcf/d until further notice, cutting roughly 0.37 Bcf/d of Canadian/Bakken supply into the Midwest; expect bullish pressure at Chicago Citygate and Northern Border Ventura TP basis, which was last quoted at -0.205 vs Henry Hub on 2026-09-09 and is likely to tighten further once the evening-cycle restriction takes effect.
Reroute: Limited: Alliance Pipeline provides an alternative Canadian supply route into Chicago but volumes are typically fully subscribed, leaving minimal spare capacity to absorb displaced NBPL volumes; no other pipeline replicates NBPL's specific Canadian border crossing and Midwest delivery corridor.
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Northern Border Pipeline (NBPL)
LIFTED: Northern Border High Inventory OFO Watch (September 10, 2026)
NBPL has declared force majeure at Trimont Compressor Station 13 (CS13) in Minnesota due to an unplanned equipment failure, effective Gas Day August 18, 2026, continuing until further notice. As a result, NBPL is restricting nominated volumes on the GlenSEG (Flow Past Glen Ullin) segment to 2,145 MMcf/d (2.145 Bcf/d), down from the current scheduled 2.55 Bcf/d -- a reduction of approximately 0.405 Bcf/d of southbound Canadian/Bakken supply. The restriction has no defined end date, adding upward price pressure risk for Midwest and Chicago markets.
NBPL force majeure at Trimont CS13 cuts GlenSEG flow cap to 2.145 Bcf/d from a currently fully-subscribed 2.55 Bcf/d (0.0% headroom confirmed in live data), implying a real-time curtailment of roughly 0.405 Bcf/d of southbound supply; Northern Bdr./Ventura TP basis was already -0.280 vs Henry Hub as of 2026-08-14 and the duration is open-ended, expect bullish pressure at Chicago Citygate and widening Northern Border/Ventura TP basis versus Henry Hub.
Reroute: Limited: Alliance Pipeline (not monitored) is the primary competing Canadian supply route into Chicago, but its capacity is typically fully subscribed; no confirmed spare capacity exists to absorb 0.405 Bcf/d of diverted NBPL volumes, and the open-ended timeline limits confidence in a near-term full offset.
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Northern Border Pipeline (NBPL)
Construction and Maintenance Schedule - Updated August 14, 2026
Below alert threshold -- no detailed analysis performed.
Reroute: Not assessed.
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Northern Border Pipeline (NBPL)
Northern Border Low Inventory OFO
SEV 4/5
Operational AlertUntil Further Notice
Northern Border Pipeline has issued an active OFO effective immediately and until further notice due to low system inventory and linepack concerns driven by sustained cold weather. Shippers are required to stay within 5% or 25,000 Dth/day of posted nominations, with NBPL reserving the right to impose prorated meter capacity restrictions. The OFO was originally posted January 20, 2026 and this revision (Rev 3) confirms the OFO remains in effect through at least January 30, 2026.
Active NBPL OFO with no-notice curtailment authority and an 'until further notice' posture tightens Canadian gas flows into the Chicago/Midwest corridor, supporting bullish basis pressure at Chicago Citygate and NGPL Midcontinent vs Henry Hub.
Reroute: Limited: Alliance Pipeline provides an alternative Canadian border crossing into Chicago, but Alliance volumes are typically fully subscribed, especially during cold weather events, limiting meaningful displacement of constrained NBPL capacity.
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Northern Border Pipeline (NBPL)
UPDATE: OFO - Under Performance, Effective ID1 Gas Day January 21
SEV 4/5
Operational Alert0.740 Bcf/dUntil Further Notice
NBPL has issued a Revision 3 OFO for under-performance, active since January 21, 2026 and continuing until further notice. Receipt capacity at Stateline is capped at 100,000 MMBtu/d and Spring Creek at 640,000 MMBtu/d, combining for approximately 0.740 Bcf/d of constrained Canadian border receipt capacity. This revision escalates prior capacity limits (Stateline was 50,000 and Spring Creek was 600,000 in the Timely cycle) and the OFO remains active with no restoration timeline, indicating ongoing supply under-delivery from the Canadian side.
Active NBPL OFO with 0.740 Bcf/d of combined border receipt capacity constrained until further notice tightens Canadian gas imports into the Midwest; expect bullish pressure at Chicago Citygate and NGPL Midcontinent basis versus Henry Hub with no defined restoration date amplifying the signal.
Reroute: Limited: Alliance Pipeline provides an alternative Canadian import corridor into Chicago but is typically fully subscribed; partial mitigation is possible but NBPL volumes cannot be fully replaced, leaving Midwest markets structurally short on Canadian supply.
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Northern Border Pipeline (NBPL)
UPDATE: OFO - Under Performance, Effective ID2 Gas Day January 21
SEV 2/5
Informational0.855 Bcf/d
This is Revision 3 of an OFO under-performance notice originally issued January 21, 2026, now reposted on March 20, 2026. The current revision updates North Roosevelt receipt capacity to 115,000 Dth/d (from 100,000 Dth/d) while Stateline (100,000 Dth/d) and Spring Creek (640,000 Dth/d) remain unchanged, for a combined capped receipt capacity of approximately 855,000 Dth/d across the three locations. No new escalation triggers are present relative to the prior revision; the OFO and capacity caps remain in place with no restoration timeline.
No new market impact -- operational situation unchanged from prior revision, market has already priced this constraint.
Reroute: Limited: Alliance Pipeline provides partial alternative Canadian gas import capacity into Chicago, but is typically fully subscribed; NBPL remains the dominant Western Canadian supply conduit into the U.S. Midwest and no fully offsetting reroute exists.
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Northern Border Pipeline (NBPL)
UPDATE-OFO Under Performance Effective ID1 Gas Day January 22
