Natural gas and LNG are frequently discussed as if they were competing products. They are not. LNG is natural gas that has been cooled until it becomes a liquid, shipped, and turned back into gas at the other end.
What differs is the delivery chain — and the chain changes almost everything about how the commodity is bought.
The physical difference
Pipeline gas moves as a gas through a fixed physical connection between a producing region and a consuming one. Once built, that connection is efficient and cheap to run. It is also permanent, expensive to create, and bound up in the political relationship between the two ends of it.
LNG replaces the pipeline with a sequence: liquefaction at origin, loading, sea transport, discharge, regasification. Each step costs money and adds complexity. In exchange, the route becomes changeable. A cargo can go to a different buyer in a different country if commercial conditions shift.
What changes for the buyer
Cost structure. Pipeline gas concentrates cost in infrastructure that has usually already been built and paid for. LNG carries per-cargo costs — liquefaction, shipping, regasification — that sit inside every transaction. LNG is not simply “more expensive”; its cost is distributed differently and moves with freight and capacity conditions.
Flexibility. A pipeline can deliver to the places it reaches. LNG can deliver anywhere with a receiving terminal. For a buyer worried about concentration risk, that difference is the point.
Contract length. Pipeline supply tends toward long-term arrangements because the infrastructure investment demands it. LNG supports both long-term contracts and single cargoes, which gives a buyer more room to match contract length to their actual consumption certainty.
Infrastructure requirement. This is the constraint that decides the others. LNG requires a receiving terminal with regasification capability. A market without one cannot take LNG at any price.
How the choice is actually made
For most industrial buyers, the decision is made before they get to it. The infrastructure available at the destination determines what can physically arrive. Where a pipeline connection exists and has capacity, gas comes through it. Where it does not, the requirement is an LNG requirement.
The genuine decision points are narrower and more practical:
- Whether to take LNG as a single cargo or on a term basis.
- Which Incoterm to trade on, and therefore who arranges shipping.
- How much of the requirement to place with one supply route versus spreading it.
What to define before enquiring
For an LNG requirement: the receiving terminal or discharge port, volume per cargo, delivery window, and preferred Incoterm. Heating value and composition where the end use has a narrow tolerance.
For pipeline gas: the connection available, end use — fuel or feedstock — and the consumption profile across the year.
An enquiry that arrives with the receiving point undefined cannot be qualified, because the first question is not whether supply exists but whether it can physically get to you.