BATTERY HYBRID • PEAK SHAVING • DUTY-CYCLE SIZING • FUEL DISPLACEMENT • REPLACEMENT • NPV • IRR
Marine Battery Hybrid ROI & Battery Sizing Calculator
Size a marine battery energy storage system for peak shaving, spinning reserve, zero-emission operating windows and hybrid generator optimization. Estimate required MWh and MW, C-rate, annual throughput, fuel and CO₂ savings, replacement timing, CAPEX, payback, NPV and IRR.
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Need multiple duty cycles, shore charging, degradation or replacement modeling? Click Advanced above.Simple sizes one recurring battery duty and compares baseline genset fuel with optimized hybrid charging after round-trip losses.SIZEkWh, kW & design C-rate
ENERGYFuel displaced after charging losses
RETURNPayback, NPV & IRR
Battery Duty & Hybrid Economics
Battery cycling does not inherently save fuel. This screen credits the SFOC improvement between baseline genset production and optimized hybrid charging, after battery round-trip losses.
kW delivered by the battery during the duty.
minutes.
% usable SOC window.
g/kWh without battery optimization.
g/kWh while engines charge/support the hybrid system at a better operating point.
$/MT.
Battery, PCS, safety, integration and installation.
Battery Duty Register
Each row is a recurring battery-supported operating duty. Sizing uses the largest single-event energy and peak power; annual throughput uses all enabled duties.
| Use | Duty | Battery kW | min/event | events/day | days/year |
|---|
Battery Sizing & Aging
kWh/module. Enter 0 to disable rounding.
Equivalent full cycles to replacement criterion.
% of initial battery-pack CAPEX.
%/year used only for future pack replacements.
Generator Optimization & Shore Charging
tCO₂/MT fuel.
$/MWh net genset generation avoided.
$/kWh.
kgCO₂/kWh.
Battery Hybrid CAPEX
$/kWh installed pack hardware.
$/kW.
Lifecycle Economics
Integration Readiness
Diagnostic only. These checks do not alter the financial result.
Downside Stress Cases
| Case | Fuel × | Dispatch × | CAPEX × | Shore rate × |
|---|