TransColorado Gas Transmission has declared a force majeure on Segment 310 at the Blanco Compressor Station effective September 30, 2026 Cycle 5 (Intraday 3), following a jacket water coupling failure on Unit #2. Operational capacity through the Segment 310_BLANCO_COMPRESSOR_BH TD2 constraint is reduced from 260,000 Dth/d to 180,000 Dth/d (a loss of 80,000 Dth/d, or 0.080 Bcf/d), with restoration until further notice. TC has indicated it will post an updated maintenance notice reflecting the total impact.
Force majeure removes 0.080 Bcf/d of TransColorado takeaway capacity from the San Juan/Piceance Basin with no restoration timeline; expect mild bearish pressure at CIG/Rockies and White River Hub regional basis, which was already averaging -0.609 vs Henry Hub over the five trading days ended 2026-09-25 (most recently -0.720 on September 25) -- the notice effective date falls after that pricing window so traders should monitor for further basis softening.
Reroute: Limited: Colorado Interstate Gas (CIG) and Wyoming Interstate (WICD) serve overlapping Rockies areas and provide some alternative egress from the Piceance and San Juan basins, but spare capacity availability is uncertain and cannot fully offset a UFN force majeure constraint.
Transco declared a Force Majeure event on 9/28/2026 due to integrity concerns on piping at the Guillory M3681 Meter Station (loc 9013263, Receipt, MP 473.5). The location was immediately restricted to zero scheduled capacity effective ID3 gas day 9/28/2026, with anticipated return to service October 3, 2026 -- a five-day outage. This is a revision superseding prior notice 17328542, with the key new information being the October 3 anticipated return-to-service date.
Transco FM at Guillory M3681 receipt meter eliminates scheduling capacity at this Gulf Coast receipt point through October 2; live capacity data confirms 0 Bcf/d operating and scheduled at loc 9013263 (evening cycle 9/30), corroborating the outage, with bullish implications for Transco Zone 4 basis as Gulf Coast receipt supply is curtailed; no volume stated in the notice so system-wide impact depends on typical throughput at this meter.
Reroute: Limited to moderate: Transco is the dominant Southeast-to-Northeast pipeline and producers with access to alternative interconnects (Gulf South, CGT, TETCO) may be able to reroute volumes, but the specific meter restriction at Guillory M3681 eliminates that receipt point entirely for its contracted shippers.
REX Update #18 confirms Segment 250 (West-to-East) remains restricted to 1.094 Bcf/d at Bertrand Compressor Station effective Gas Day October 1, 2026, until further notice. At this restriction level, primary firm, secondary firm, and ITS/AOR quantities are all at risk of not being scheduled. No restoration timeline has been provided across 18 updates, and this is a fresh notice (Revision 1) posted September 30, 2026.
REX Segment 250 W-to-E cap of 1.094 Bcf/d with primary firm at risk is a sustained, material Rockies-to-Midwest constraint; expect bullish pressure at Lebanon Hub and Midwest delivery points, and note that Trailblazer shares Bertrand CS and cannot serve as an independent reroute, leaving no effective bypass for the affected volumes.
Reroute: None: REX and Trailblazer share Bertrand Compressor Station -- both are simultaneously constrained by the same facility, so Trailblazer cannot serve as an independent reroute for REX Segment 250 flows.
Transco declared force majeure on 9/28/2026 due to a Variable Frequency Drive failure on Main Unit 9 at Compressor Station 50 (MP 517.23), restricting south-to-north mainline flows effective timely gas day 9/29/2026. The TSB at MP 517 shows design capacity of 1.536 Bcf/d with total available quantity of 1.300 Bcf/d, representing a 0.236 Bcf/d reduction (approximately 15% of design capacity) with 5-12% cuts to primary firm service. Repairs are underway and expected to be completed by end of week, but no firm restoration date is given and duration remains UFN.
Transco Station 50 force majeure removes approximately 0.236 Bcf/d of south-to-north mainline capacity with 5-12% primary firm cuts, supportive of Transco Zone 4 and downstream zone basis widening vs Henry Hub; monitor CS 60 (already at 100% utilization per live data) and CS 65 South (81.5% loaded) as downstream choke points that could amplify impact if repairs extend beyond week-end.
Reroute: Limited: Transco is the dominant pipeline in the Southeast-to-Northeast corridor; Southern Natural Gas provides partial real-world alternative capacity in the Southeast but is unmonitored and cannot be confirmed available. Tennessee Gas Pipeline serves overlapping Northeast markets but cannot fully offset a Transco mainline constraint at this scale.
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Transco
Update - Notice of Force Majeure Event - Unplanned Outage – Guillory M3681 Meter Station 2026
SEV 4/5
Force MajeureUntil Further Notice
Transco declared a force majeure on 9/28/2026 due to integrity concerns on piping at the Guillory M3681 Meter Station (loc 9013263, receipt point, MP 473.5), effective ID3 gas day 9/28. Total available capacity at this receipt point has been zeroed out (EPSQ/0), and the location is unavailable for scheduling or flow until further notice. Repair work is underway with no restoration timeline posted; an updated timeline will follow when available.
Transco receipt FM at Guillory M3681 removes this Gulf Coast receipt point from scheduling UFN with zero available capacity confirmed in live data (loc 9013263 showing 0 Bcf/d operating capacity, 0.015 Bcf/d still scheduled vs-design flag); with Zone 4, Zone 5, and Zone 6 segment headroom already at 0% in today's intraday cycle, any reduction in Gulf Coast receipts adds incremental bullish pressure to Transco Zone 4 and downstream Southeast basis.
Reroute: Moderate: Transco serves Gulf Coast-to-Southeast flows alongside Southern Natural Gas (SNG, unmonitored) and Tennessee Gas Pipeline; shippers at this specific receipt meter have no bypass at this location, but alternative receipt points on Transco and competing pipes may partially offset lost supply. However, with Zone 4 and Zone 5 segment headroom already at 0% today, absorbing rerouted volumes on Transco itself is constrained.
Transco has declared a force majeure event at the Guillory M3681 Receipt Meter Station (Location ID 9013263, MP 473.5) effective ID3 gas day 9/28/2026 through at least the Evening cycle of 9/29/2026 due to equipment failure. The station is unavailable for scheduling or flow until further notice, with no restoration date provided. Live capacity data from intraday 2 on 9/28 showed 0.321 Bcf/d scheduled at this receipt point against 1.03 Bcf/d operating capacity, so the curtailed volume is approximately 0.321 Bcf/d; however, that reading predates the event and current scheduled quantities are now effectively zero per the notice.
Transco force majeure at Guillory M3681 (MP 473.5, Zone 4 corridor) removes approximately 0.321 Bcf/d of receipt capacity until further notice -- expect mild bullish pressure at Transco Zone 4 basis, with limited broader HH signal given the localized receipt-point nature of the outage; mainline segments remain largely unconstrained at this time but the UFN duration warrants monitoring.
Reroute: Limited: as a receipt meter station on Transco, the reroute option is for upstream shippers to redirect gas to alternative Transco receipt points or competing pipelines (Gulf South, CGT) serving this Louisiana corridor, but those arrangements require operational changes and may not fully replace scheduled quantities on short notice.
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Colorado Interstate Gas
[MAINTENANCE] MLV 533-2 to MLV 534-2 Pipe Replacement
Below alert threshold -- no detailed analysis performed.
Reroute: Not assessed.
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Southern Natural Gas
[STORAGE] MONTHLY STORAGE TRANSFERS REMINDER
SEV 1/5
Informational
Not scored -- external_id 'SNGD-404590' shares its numeric ID and exact title with 'TGP-404590' under a different pipeline code. Very likely the same underlying notice scraped twice under two different labels (see kindermorgan.py v19 changelog / audit_km_contamination.py) rather than two independent events. No Claude API call was made for this notice. Needs manual review to confirm which pipeline (if either) is correct before it's trusted.
Not scored -- suspected cross-pipeline duplicate, needs manual review.
Reroute: Not assessed.
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Colorado Interstate Gas
[STORAGE] MONTHLY STORAGE TRANSFERS REMINDER
SEV 1/5
Informational
Not scored -- external_id 'CIGD-404590' shares its numeric ID and exact title with 'TGP-404590' under a different pipeline code. Very likely the same underlying notice scraped twice under two different labels (see kindermorgan.py v19 changelog / audit_km_contamination.py) rather than two independent events. No Claude API call was made for this notice. Needs manual review to confirm which pipeline (if either) is correct before it's trusted.
Not scored -- suspected cross-pipeline duplicate, needs manual review.
