TY  - JOUR
A1  - Weger Coenen, Lindsey
A1  - Leitão, Joana
A1  - Lawrence, Mark G.
T1  - Expected impacts on greenhouse gas and air pollutant emissions due to a possible transition towards a hydrogen economy in German road transport
T2  - International journal of hydrogen energy : official journal of the International Association for Hydrogen Energy
N2  - Transitioning German road transport partially to hydrogen energy is among the possibilities being discussed to help meet national climate targets. This study investigates impacts of a hypothetical, complete transition from conventionally-fueled to hydrogen-powered German transport through representative scenarios. Our results show that German emissions change between -179 and +95 MtCO(2)eq annually, depending on the scenario, with renewable-powered electrolysis leading to the greatest emissions reduction, while electrolysis using the fossilintense current electricity mix leads to the greatest increase. German energy emissions of regulated pollutants decrease significantly, indicating the potential for simultaneous air quality improvements. Vehicular hydrogen demand is 1000 PJ annually, requiring 446-525 TWh for electrolysis, hydrogen transport and storage, which could be supplied by future German renewable generation, supporting the potential for CO2-free hydrogen traffic and increased energy security. Thus hydrogen-powered transport could contribute significantly to climate and air quality goals, warranting further research and political discussion about this possibility.
KW  - Hydrogen economy
KW  - German road transport
KW  - Greenhouse gas mitigation
KW  - Air
KW  - pollution
KW  - Fuel cell electric vehicle
KW  - Emission scenarios
Y1  - 2020
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/58380
SN  - 0360-3199
SN  - 1879-3487
VL  - 46
IS  - 7
SP  - 5875
EP  - 5890
PB  - Elsevier
CY  - Oxford
ER  -