Williams Greenlights a Super-Sized Southeast Supply Enhancement Project

Appalachian natural gas producers got good news earlier this month: Williams announced it was moving forward with the Southeast Supply Enhancement project, a large-scale expansion of southbound capacity out of the Northeast on its Transco Pipeline system. Not only that, but it super-sized the project to 1.4 Bcf/d of capacity — nearly double the 800 MMcf/d it had offered in an open season held this summer. The project is one of several brownfield expansions planned to provide additional supply access in Transco’s premium Zone 5 market area, which runs through Virginia and North Carolina — and the first large-scale takeaway expansion to be announced in the area since the long-delayed Mountain Valley Pipeline (MVP) was cleared for completion following years of regulatory and legal hurdles. In today’s RBN blog, we provide the latest on the Transco Corridor expansions.

When it comes to midstream development in the Northeast, Appalachian natural gas producers have learned by now not to hold their breath. The region is notorious for its staunch environmental opposition to hydrocarbon infrastructure and its propensity for sending gas pipeline projects to the trash pile. Against all odds, however, midstream development in the region has thawed in recent months, in large part spurred by the unlikely advancement of Mountain Valley Pipeline (MVP), the long-embattled project to move up to 2 Bcf/d from the Appalachia gas supply basin to the Transco Corridor, which runs north-south along the Eastern Seaboard. In today’s RBN blog, we take a look at historical flows on Williams’s Transco Pipeline and what they can tell us about how MVP and Transco’s own planned expansions might reshape gas flows along the corridor. 

It took an “Act of Congress” and a decision from the highest court in the land — handed down by the Chief Justice no less — but it’s looking more and more like Mountain Valley Pipeline (MVP) will be completed as early as by the end of this year, opening up 2 Bcf/d of new takeaway capacity for the increasingly pipeline-constrained Appalachian gas supply basin. That’s shifted the industry’s gaze to bottlenecks downstream of where the bulk of the volumes flowing on the new pipeline will land — on the doorstep of Williams’s Transco Pipeline in southern Virginia. A number of midstream expansions have been announced to capture the influx of natural gas supply from MVP and shuttle it to downstream markets in the Mid-Atlantic and Southeast regions, and indications are that more will be announced and greenlighted in the coming months. These projects will be key to both enabling gas production growth in the Appalachia basin as well as meeting growing gas demand in the premium markets lying on the other side of the constraints. In today’s RBN blog, we delve into the details and timing of the announced expansion projects vying to increase market access to MVP supply.