What NGV stands for
NGV is the acronym for Natural Gas Vehicle. Which means: natural gas used as vehicle fuel.
Whether in the form of LNG or CNG, its composition (mainly methane) and its advantages are the same:
- Cleaner: reducing emissions of solid particles and greenhouse gases (carbon monoxide, carbon dioxide, sulphur dioxide).
- Quieter: thus helping to combat noise pollution, the veritable urban disease of our time.
- Cheaper: currently about 50% cheaper than petrol.
- More practical: these vehicles have the ECO label, so they can go anywhere even in low emission zones.
For these reasons, gas powered vehicles are becoming common in transport companies, bus fleets, and even shipping companies. Although more slowly, they are also being used more by private individuals, as the number of models available and refuelling stations increase.
What CNG stands for
This is the acronym for compressed natural gas (CNG). It is a type of NGV and consists in using gas stored at room temperature at high pressures (between 200 and 250 bar).
It has a range of between 300 and 500 kilometres, so it is mainly used in urban environments: taxis, buses, dust carts, etc. and more and more often by private individuals using a car for work.
What LNG stands for
This is the acronym for liquefied natural gas (LNG). It is a type of NGV and consists of liquid gas stored at -162 degrees, thereby reducing its volume by some 600 times.
It is odourless and colourless, non-toxic and non-flammable. Its enormous range (between 800 and 1,500 kilometres) explains its widespread use in trucks, maritime transport and generally vehicles that have to travel long distances.
What LPG stands for
This stands for liquefied petroleum gas (LPG). It is not a type of NGV, since it is not derived from natural gas. It is a gaseous fuel that is obtained by distilling oil and is made up of butane and propane. It is stored in a liquid state at low pressures (approximately 10 bar).
LPG is 40% cheaper than fossil fuels, while its noise level is 50% less, so is highly recommended for city transport. At present, it is estimated that there are some 50,000 LPG vehicles in Spain, and about 600 refuelling stations.
As for natural gas, there are currently 124 gas companies, 57 of which are publicly owned. These figures will increase in the coming years, as there is a project to introduce 80 more.