What is LBG?

illustration of a cow, manure, biogas plant, LBG tank, a ship bunkering and a truck being refuelled

Liquefied biogas (LBG) is a highly compact and effective energy source that is already a part of the carbon circulation. It burns cleanly and helps protect our climate – a responsible fuel in many ways.

Image of cows in front of a biogas tank

If natural gas comes from manure, food waste or other organic matter, it is biogas. In its liquid form, it is called LBG – a 100% CO2-neutral source of energy.
LBG is virtually identical to liquefied natural gas (LNG), which is why it also turns into a liquid at -162°C (-259°F) and holds the same qualities of being compact and burning cleanly. But, as an extra bonus, LBG is an even more sustainable fuel than LNG, since we do not need to extract fossil resources to create it.

From manure to responsible fuel

Biogas comes from resources that are already part of the carbon circulation, like for example cow manure. Looking at the composition of cow manure, we find large amounts of methane (CH4) – just as in natural gas. Meth­ane is a greenhouse gas like CO2 and is 25 times more harmful if emitted to the atmosphere. However, when putting manure through a biogas plant, it is possible to collect this methane in tanks, convert into a liquid and then we have LBG – a highly responsible fuel.

Win-win situation

Manure is commonly spread directly on the farmers’ fields as fertiliser, from where the methane seeps into our atmos­phere. However, the process of turning this damaging gas into a green fuel is not solely an advantage within the transport sector. Degassing the manure in a biogas plant, namely makes it an even better fertiliser when returned to the fields. And actually, by extracting the methane from the manure before spreading it on the fields, we reduce the total climate impact with 90%, while at the same time getting a responsible fuel.

One kilogram of methane is equivalent to approx. 25 kg of CO2, but when that same amount of methane is used as a responsible fuel and burns in an engine, it only emits 2.5kg CO2. LBG is, therefore, ideal for trucks and ships that have previously been reliant on diesel or other oil-based fuels, as it saves our atmosphere from large amounts of CO2 and other harmful pollutants in more ways than one.

A better future

By developing capacity to use these resources, it is possible to move towards an even more sustainable future. Especially within the transport sector, LBG has the potential to greatly reduce harmful emissions from trucks and ships. Because, with LBG, we have a 100% CO2 neutral fuel with no sulphur oxides (SOX) emissions and practically no nitrogen oxides (NOX) emissions.