Marine Power Architecture, Hybridization, Endurance & Lifecycle Economics

Marine Fuel Cell vs Generator vs Battery Hybrid TCO, Endurance & Power-Sizing Tool

Compare three shipboard power architectures on the same duty profile: conventional generator-only, fuel-cell plus battery buffer, and generator plus battery hybrid. Size continuous power, peak-support battery kW and kWh, critical-load endurance and fuel storage, then compare capex, fuel, maintenance, replacements, lifecycle carbon value, TCO and crossover economics.

Currency
Currency selector changes display only. No exchange-rate conversion is performed.

Vessel Power Mission

Model a ship-service plant, auxiliary-power plant, zero-emission port requirement, offshore duty or propulsion-support system. Advanced mode replaces the simple annual-load estimate with a dynamic operating profile.

years
kW
%
kW
hours

Simple Operating Profile

kW
h/year
hours
Used to size battery energy when a smaller generator or fuel cell must cover a short peak.
kW
hours

Operating Load Profile

Each row represents a recurring operating mode. Battery peak-support energy is calculated from load above the entered hybrid source rating for that mode, while annual energy uses load × hours/day × days/year.

Operating mode Load kW Hours / day Days / year Zero-emission battery mode?

Generator-Only Baseline

g/kWh
Use OEM / measured plant SFOC for the relevant operating range.
$ / t
$ / kW
$ / MWh
running h
$
t
gCO₂e/MJ
MJ/kg

Fuel Cell + Battery Architecture

kW
%
Enter net electrical efficiency after balance-of-plant parasitic demand.
MJ/kg
$ / t
$ / kW
$
$ / MWh
running h
$ / kW
t
gCO₂e/MJ

Generator + Battery Hybrid

kW
%
User-entered fuel improvement from optimized genset loading, start/stop strategy and reduced low-load operation.
%
$ / kWh
gCO₂e/kWh
$

Battery Sizing & Lifecycle Assumptions

The same battery cost and life assumptions are used for both hybrid architectures, but each architecture receives its own calculated battery kW and kWh requirement.

%
%
%
%
$ / kWh
$ / kW
$
year
%
$ / kWh/yr

Economic & Project Assumptions

$ / tCO₂e
%
%
years
Screening tool, not system design: Do not use this calculator for class approval, electrical protection studies, short-circuit analysis, battery thermal-runaway safety, hydrogen / low-flashpoint fuel safety, ventilation sizing, hazardous-area classification, fuel-cell room design, generator transient response or statutory emergency-power compliance. Final architecture must be validated against the actual vessel duty cycle, OEM data, class / flag rules and approved risk assessments.
Reference framework: Fuel-cell installations should be checked against the applicable IMO fuel-cell safety framework, including MSC.1/Circ.1647, plus fuel-specific requirements and the IGF Code where applicable. Battery-ship safety requirements continue to evolve, so verify the current IMO, class and flag basis for the project rather than relying on a generic calculator threshold.
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