Below alert threshold -- no detailed analysis performed.
Reroute: Not assessed.
Transco
Unplanned Maintenance Station 50 Compressor Outage
SEV 3/5
Compressor Issue0.116 Bcf/dUntil Further Notice1 Days
An unplanned equipment failure on Main Unit 9 at Transco Station 50 (MP 517.23) has immediately restricted south-to-north scheduled quantities effective ID1 June 23, 2026. Design capacity of 1,536 MDt/d is reduced to 1,420 MDt/d available (approximately 0.116 Bcf/d constraint), with 5-10% cuts to primary firm service based on historical utilization. Duration is anticipated to be 1 day.
Transco Station 50 unplanned compressor outage removes approximately 0.116 Bcf/d of northbound capacity with 5-10% primary firm cuts, tightening Transco Zone 4 Southeast basis and creating mild bullish pressure on downstream Mid-Atlantic and Northeast points for the remainder of the gas day.
Reroute: Limited: Southern Natural Gas (SNG/EGT) provides partial alternative for Southeast market deliveries, but Transco dominates the northbound corridor from this zone and SNG capacity is significantly smaller; full reroute of constrained volumes is unlikely within a single day.
Below alert threshold -- no detailed analysis performed.
Reroute: Not assessed.
Transco
2026 Major Construction and Maintenance Projects
SEV 2/5
Informational
Transco has posted Revision 5 of its 2026 major construction and maintenance schedule, noting updates to planned project dates and the addition of an ILI (inline inspection) activities tab. No specific capacity restrictions or curtailment volumes are stated in this notice. Individual maintenance windows that affect interruptible or secondary firm transportation will be detailed in separate notices prior to commencement.
No new market impact -- this is a routine schedule update with no stated capacity restrictions; market has already priced any previously communicated 2026 Transco maintenance constraints.
Reroute: Not applicable -- no specific constraint or capacity loss is identified in this notice. Individual project-level notices will require separate reroute assessment when posted.