Browse Publications Technical Papers 2020-37-0027
2020-06-23

Assessment of the Potential of Power to Gas Fuels for Replacement of Fossile Fuels in Switzerland 2020-37-0027

In Switzerland, road traffic is responsible for one third of greenhouse gas emissions respectively 40% of the CO2 emissions and therefore accounts for the largest single share of all sectors. These emissions have even increased slightly since 1990 (from 15.5 to 16.2 million tCO2). Private individual road transport achieves a mileage of approximatively 91.0 billion pkm (person-kilometer) and 17.2 billion tkm (tons-kilometer) per year. Therefore, 3.3 billion liters of gasoline and 3.2 billion liters of diesel are used, resulting in 16.2 million tCO2 emissions in total. Thereof, 10.2 million tons of CO2 are emitted by passenger cars and 1.7 million tons by trucks, the two most important means of transport concerning CO2 emissions. The rest is produced by vans, buses, motorcycles, railways and shipping, national air traffic and fuel tourism. The passenger cars are the most relevant application in terms of CO2 emissions with a share of 63% of the road vehicle CO2 emissions. To comply with the 95 g/km target, low CO2 vehicles have to be introduced. In the following, the number of such low CO2 vehicles is estimated. In 2023 there are probably only the following three additional powertrain technologies available: Battery electric vehicles (BEV), plug-in hybrid vehicles (PHEV) and gas vehicles powered by synthetic methane (PtGV). On a longer time-scale, also fuelcell vehicles could be available. Due to the high cost of synthetic fuels of around 0.20 EUR/kWhLHV (currently, pioneer plants are rather in the range of 0.25 - 0.30 EUR/kWhLHV), a major challenge is the economic feasibility. However, the use in vehicles seams possible, due to the comparatively low share of energy costs.

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