EIA: Difference In Appalachian, Henry Hub Prices Narrowing
02 August 2018
The difference in price between Appalachian hubs and Henry Hub tends to follow a seasonal pattern, according to the U.S. Energy Information Administration.
Generally, this price spread widens in the summer months (April through September) and narrows in the winter months (October through March), when demand in regions with more pipeline capacity increases in the winter months.
As infrastructure in the Appalachian region has increased, however, the summer price spread to Henry Hub has decreased. For example, in the summer of 2015, the Dominion South price was $1.48 per million British thermal units (MMBtu) lower than Henry Hub, but by summer 2017, the Dominion South Hub was $1.07/MMBtu lower than Henry Hub. Winter spreads at the Dominion South Hub, on the other hand, have remained relatively flat in recent years, averaging $0.90/MMBtu lower than Henry Hub.
Other hubs in Appalachia have followed a similar seasonal pattern. Most of the recent pipeline buildout in Appalachia, including the Rover and Rockies Express pipelines, have been concentrated near the southwest border of Pennsylvania where the Dominion South hub is located. As a result, the price spread between Dominion South and Henry Hub has narrowed more than other hubs in north-central Pennsylvania, such as Leidy and Marcellus.
On June 1, Rover Pipeline’s interconnect to the Vector pipeline and Dawn Hub, near Detroit, Michigan, was completed, which increased takeaway capacity from southwest Pennsylvania and further narrowed the price spread between Dominion South and Henry Hub. In June, the Dominion South price was $0.71/MMBtu lower than Henry Hub; however, the Marcellus and Leidy hubs were $1.01/MMbtu and $1.04/MMbtu lower than Henry Hub, respectively.
The Transco Atlantic Sunrise, which will connect natural gas production centers in northeastern Pennsylvania to demand centers in Mid-Atlantic and southern states, is expected to be completed by the end of 2018. As this project comes online, price spreads between the northern hubs and Henry Hub will likely narrow.
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