2025
Oceans, Electrified.
Ferry electrification
CO₂ calculator
R = 1 − K ·
g
· (1 −
s
)
Parameters
Specific fuel consumption, SFC
g/kWh
Diesel density, ρ
kg/L
Emission factor, f_d
kg CO₂/L
Battery, η_b
Electrical, η_e
Motor, η_M
Alternator, η_A
Diesel intensity
—
K prop
—
Break-even prop
—
K aux
—
Break-even aux
—
Operating point
Grid carbon factor, g
0.82
kg CO₂/kWh
Onboard solar share, s
0%
Propulsion · R_prop
—
Auxiliary · R_aux
—
Diesel (per kWh_mech)
—
Electric (per kWh_mech)
—
Reduction surface · R(g, s)
solar share s →
grid carbon factor g (kg CO₂/kWh) →
increases CO₂
reduces CO₂
Reduction vs grid factor · at current s
Propulsion
Auxiliary
break-even
National grids
Country / region
g
R_prop (s=0)
R_prop (s=.25)
R_aux (s=0)
