2- Compare the fueling/charging costs and GHG emissions of an electric car, a hydrogen fuel cell car, and an ICE (running on petrol) car per km of range by using the following assumptions: The high-pressure hydrogen is produced using a medium pressure electrolyser with 0.62 efficiency followed by and an external compressor with 80% efficiency. The round-trip energy efficiency of the battery is 75% The battery is charged in a cold wintertime in Melbourne for which equivalent to 10% of the energy content of batteries is used for their thermal management during charging. 10% of the electrical energy stored in the battery is used by the heater (i.e. in a cold winter day). The energy content of hydrogen (HHV) is 142 MJ/kg (~40 kWh/kg) The energy content of unleaded petrol is 34.2 MJ/litre The overall efficiency of the petrol car in converting the chemical energy of the fuel to mechanical energy delivered to the wheels is 20% The average energy efficiency of the fuel cells used is 45% (based on HHV), and that of the electric motors 85% The batteries are charged up by using grid electricity in Victoria The electrolyser and compressor are powered by electricity supplied by the Victorian grid

The following document can be used for estimating greenhouse gas emissions required for answering this question: NATIONAL GREENHOUSE GAS ACCOUNTS (2019) https://www.industry.gov.au/data-and-publications/national-greenhouse-accountsfactors-august-2019