Of all fossil fuels, natural gas contains the least carbon (C) and the largest proportion of hydrogen (H). If we take the same energy content, 25 per cent less carbon dioxide (CO2) is released during natural gas combustion than heating oil combustion.
As we all know today, CO2 has a considerable impact on the warming of the Earth’s atmosphere. Using natural gas instead of other fossil fuels helps to minimise the impact of CO2 on the atmosphere, thus also helping to mitigate the greenhouse effect. This also applies if the low methane losses from natural gas pipelines are taken into account. In Switzerland, these losses account for a few tenths of a per cent of countrywide natural gas distribution. If we add up all emissions from greenhouse gases throughout the entire natural gas and heating oil supply chain and then convert them to determine their greenhouse effect, natural gas performs about 25 per cent better than heating oil. The balance is even better for new pipelines and high-pressure pipelines.
Replacing oil heating systems with natural gas ones has made the greatest contribution to reducing CO2 emissions in Switzerland for years.