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What are LNG / CNG and BIO-LNG?

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LNG (Liquefied Natural Gas)

LNG (Liquefied Natural Gas) is a gas essentially composed of methane (CH4) that has undergone liquefaction to convert it from a gaseous state to a liquid state. This liquefaction is carried out by cooling the natural gas to a temperature of approximately -160°C. The advantage of storing the gas in its liquefied form is its higher density. In fact, in the same volume, up to 600 times more gas can be stored when it is in its liquid form. LNG as a fuel is more widely used for extra-urban use, due to its very low storage temperature, it requires slightly more restrictive storage conditions on board vehicles than CNG, but allows a threefold increase in autonomy.

Why use it?


Superior autonomy


Less polluting


Less noisy

LNG is now considered the cleanest fossil fuel.


  • Reduction of around 25% of CO² emissions ,

  • Significant reduction in emissions of nitrogen oxide (NOx) and other particles,

  • 3x quieter than a conventional engine,

Used as fuel, LNG ensures a range of more than 1000 km .


CNG (Compressed Natural Gas), unlike LNG, is natural gas kept in its gaseous form but at high pressure. After being transported in a pipeline, it is compressed in order to be stored at a pressure of between 200 and 300 bar. CNG as a fuel is more broadly for urban use, requiring much less sophisticated and expensive storage conditions than LNG.

Bio-LNG (or also bio-LCNG)  

Bio-GNL (or also bio-GNLC) for biological liquefied natural gas is produced from the methanization of biomass or waste. Although relatively similar to LNG, bio-LNG used as a fuel is even less polluting. To summarize, bio-LNG is liquefied biomethane from which CO² has been extracted.