Direct charging
Battery electric car
Energy losses
From well to tank
Electrolysis
C02 air capture,
hydrocarbon synthesis
Transport, storage
and distribution
94% efficient
From tank to wheel
Inversion AC/DC
Battery charge
efficiency
H2 to electricity
conversion
Inversion DC/AC
Engine efficiency
77% efficient
Hydrogen
Fuel cell car
Energy losses
From well to tank
Electrolysis
C02 air capture,
hydrocarbon synthesis
Transport, storage
and distribution
68%
From tank to wheel
Inversion AC/DC
Battery charge
efficiency
H2 to electricity
conversion
Inversion DC/AC
Engine efficiency
33%
Petrol e-fuel
Conventional car
Energy losses
From well to tank
Electrolysis
C02 air capture,
hydrocarbon synthesis
Transport, storage
and distribution
55%
From tank to wheel
Inversion AC/DC
Battery charge
efficiency
H2 to electricity
conversion
Inversion DC/AC
Engine efficiency
Note: 20% for diesel because
of better engine efficiency
16%
Direct charging
Hydrogen
Petrol e-fuel
Battery electric car
Fuel cell car
Conventional car
Energy losses
From well to tank
Electrolysis
C02 air capture,
hydrocarbon synthesis
Transport, storage
and distribution
94% efficient
68%
55%
From tank to wheel
Inversion AC/DC
Battery charge
efficiency
H2 to electricity
conversion
Inversion DC/AC
Engine efficiency
Note: 20% for diesel because
of better engine efficiency
77% efficient
33%
16%