Route

Commonwealth Gas Pipeline runs from Lycoming County to Charles County. The map draws the tracked route and any LNG terminal within 25 km of it.

Loads about 250 kB of map code and the country outline file.

Segments

Each row is one row of GEM's pipeline file. Project-level figures repeated on every segment are counted once in the totals above.

Segment	Status	From → to	Length	Capacity	Diameter	Start	Route from
Whole pipeline	Cancelled	Lycoming County → Charles County	197	12.3	—	—	GEM's route file

Terminals whose coordinates fall within 25 km of this route, or whose name matches the pipeline. Proximity is not proof of a physical connection.

Terminal	Country	Import / export	Status	Distance	Matched by
Commonwealth LNG Terminal	United States	Export	Under construction	—	name match

Stakes as reported by GEM per segment, merged across segments.

Background on the technology and the terms used on this page.

How LNG works
Liquefied natural gas is natural gas chilled to about minus 162 degrees Celsius, at which point it becomes a liquid roughly 600 times smaller than the gas, so it can be shipped where no pipeline runs.
Mtpa, bcm and cubic metres
LNG capacity is quoted in three incompatible units, and the two conversions that matter are 1 million tonnes a year equals about 1.36 billion cubic metres of gas a year, and 1 cubic metre of liquid equals about 600 cubic metres of gas.
What terminal status actually means
A project status describes how far an LNG terminal or train has progressed, and the gap between proposed and operating is the single most misread number in the industry.