Cruise Ship Food Waste Cost & Digester ROI Calculator
Estimate cruise ship food waste generation, digester throughput,
landed-waste reduction, power and fuel impact, water and consumable
cost, labor savings, annual operating benefit, payback, NPV and IRR.
Advanced mode separates guest, crew and galley waste while modeling
capacity utilization, disposal routing, cold-storage energy, shore
power and full retrofit CAPEX.
Waste Volume
Estimate daily and annual food waste from passengers,
crew and galley operations
Digester Capacity
Compare captured waste with rated throughput,
availability and design reserve
Lifecycle Economics
Calculate disposal savings, energy cost, OPEX,
payback, NPV and break-even disposal fee
Food Waste Generation
Use average persons onboard and food-waste generation
assumptions for the operating period being analyzed.
passengers
crew
kg/person-day
kg/person-day
days/year
Digester Performance
%
kg/day
%
%
%
Waste Handling & Disposal Cost
%
%
$
/tonne
hours/day
$
/hour
%
Energy, Water & Consumables
kW
hours/day
kW
g/kWh
$
/MT
tCO2/MT
L/tonne
$
/m³
$
/tonne
Project Investment
$
$
/year
years
%
%/year
%/year
%/year
Food Waste Generation Profile
Separate guest, crew and galley/preparation waste for
a more detailed daily throughput estimate.
passengers
crew
kg/person-day
kg/person-day
kg/day
days/year
Digester Capacity & Processing
%
kg/day
%
%
%
Waste Routing & Port Cost
Enter the share of each waste stream that your voyage
plan requires to be landed. This tool does not determine
discharge eligibility.
%
%
$
/tonne
$
/tonne avoided
Labor & Storage
hours/day
$
/hour
%
kW
%
Digester Utilities & Consumables
kW
hours/day
L/tonne
$
/m³
$
/tonne processed
Power Source, Fuel & Carbon
%
The remaining share is valued as shore electricity.
g/kWh
$
/MT
tCO2/MT
$
/kWh
kg/kWh
$
/tCO2
%
Retrofit CAPEX
$
$
$
$
$
$
$
%
days
$
/day
$
Lifecycle Assumptions
$
/year
$
/year
Optional manual value. Avoid double-counting disposal,
labor or energy benefits already entered.
year
$
years
%
%/year
%/year
%/year
%/year
$
Food Waste & Digester ROI Results
Simple cruise food-waste investment screen
Enter food waste data
Enter passengers, crew, food-waste generation,
digester capacity, disposal cost and project cost
to calculate waste reduction and ROI.
Annual Landed Waste Avoided
N/A
Reduction in food waste requiring landed handling
under the entered routing assumptions
Year 1 Net Benefit
N/A
Disposal, labor, energy and carbon value after
utilities, consumables and annual OPEX
Food Waste Generated
N/A
Processed by Digester
N/A
Required Rated Capacity
N/A
Capacity Utilization
N/A
Baseline Landed Waste
N/A
Post-Digester Landed Waste
N/A
Digester Electricity
N/A
Net Fuel Saved
N/A
CO2 Avoided
N/A
Water Use
N/A
Installed Project Cost
N/A
Simple Payback
N/A
Project NPV
N/A
Internal Rate of Return
N/A
Break-Even Disposal Fee
N/A
Break-Even Capture Rate
N/A
Year 1 Savings Breakdown
Food Waste & Digester Summary
Waste Mass Balance
Annual operating case
Waste Stream
Tonnes / Year
Share of Generated
Lifecycle Cash Flow
Escalation and overhaul included
Year
Disposal Savings
Labor Savings
Energy Value
Consumables + Water
Fixed OPEX
Overhaul
Carbon / Other
Net Cash
Discounted
Digester ROI Sensitivity
Waste volume vs disposal fee
Waste Volume \ Disposal Fee
-20%
Base
+20%
Model approach:
daily food waste is calculated from passenger, crew
and galley inputs. Captured waste is limited by rated
digester capacity and adjusted for system availability.
Processed mass is reduced by the entered treatment
percentage, while unprocessed waste and residual material
follow the user-entered landed-disposal shares. Energy
economics compare digester electrical demand with any
avoided cold-storage load, then value onboard electricity
through generator SFOC and fuel price and shore electricity
through the entered tariff. Financial results include
disposal, labor, water, consumables, OPEX, optional carbon
value, overhaul and project CAPEX.
Planning estimate only.
Actual cruise food-waste generation and treatment performance
depend on passenger count, occupancy, itinerary, menu,
provisioning, galley practices, segregation quality, equipment
loading, temperature, water quality, consumable dosing,
maintenance, port reception arrangements and the approved
garbage-management plan. This tool does not determine whether
any food-waste stream or treated residue may be discharged at
sea. Enter landed-disposal shares that match the vessel's
applicable operating and compliance plan, and use supplier
and vessel-specific data before an investment decision.
