Natural gas is a fossil fuel(1) that essentially(2) consists of methane(3). Methane is a hydrocarbon(4) with a high energy content that causes the lowest carbon dioxide emission of all fossil fuels. This hydrocarbon is split into hydrogen and carbon monoxide in the fuel cell system and converted into electricity. There is already an extensive(5) infrastructure for the production and use of natural gas. The natural gas resources are large, but ultimately finite(6). [1]
Gas is a non-renewable energy. Non-renewable energy is the largest part of Swiss energy consumption, namely around 79 percent. Because there isn't any fossil fuels found in Switzerland. That means they have to be imported from abroad. [2]
Quiz:
Do we have unlimited source of gas?
* yes
* no
Vocab:
(1) fossile Brennstoffe
(2) hauptsächlich
(3) Methan
(4) Kohlenwasserstoff
(5) umfangreich
(6) endlich
Sources:
[1] http://www.hexis.com/de/energietr%C3%A4ger-erdgas
[2] https://konsum.ch/erdgas-preise/