CH₄, N₂O, CO₂e, CEMS, Engine-Load Monitoring, Hybrid Coverage, Analyzer Count & Lifecycle Cost

Marine CH₄/N₂O Emissions Measurement, CEMS & Engine-Load Monitoring Cost Tool

Estimate non-CO₂ greenhouse-gas exposure from the entered engine duty profile, then size the monitoring program. Simple mode turns one representative engine/source profile into annual CH₄, N₂O and CO₂e plus program cost. Advanced mode compares continuous emissions measurement, engine-load monitoring with measured emission maps, and a targeted hybrid strategy under the IMO's 2026 measurement, ELM and CEMS framework.

Data type
Currency
Currency selection changes display only. No exchange-rate conversion is performed.
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Need much more depth? Click Advanced above. Add engine/source groups, editable GWP100 factors, CEMS analyzer sizing, sampling hardware, ELM map coverage, load-signal availability, data completeness, uncertainty, hybrid source prioritization, lifecycle NPV cost and verification-readiness gates.

Fast Non-CO₂ GHG & Monitoring Cost Screen

Emission factors are user-entered project values in g/kWh. They are not IMO default factors. Simple CO₂e uses the IMO 2024 LCA GWP100 values of CH₄ = 28 and N₂O = 265; these are editable in Advanced.

kW.
h/year.
% of rated power.
g/kWh.
g/kWh.
g/kWh.
Selected currency. Use supplier / project budget.

Project & Reporting Basis

years.
%.
% project / verifier target.
% project screening limit.
GWP100 multiplier.
GWP100 multiplier.
Selected currency / hour.

Engine / Exhaust-Source Register

Use one row per engine type or source group. The hybrid model expands quantity and assigns direct CEMS first to the highest estimated CH₄/N₂O CO₂e sources. Row labels are not submitted to Ship Universe Tool Data.

Engine / sourceQty / vesselRated kWh/yrAvg load %SFOC g/kWhCH₄ g/kWhN₂O g/kWh

CEMS Cost & Performance

%.
% project input.
hours.
per analyzer.
per point.
per vessel.
years.
per analyzer.
% of intended points screened as feasible.

Engine-Load Monitoring + Emission Map

%.
% project input.
hours.
per vessel.
per vessel.
years.
%.
%.
% load.
% load.

Targeted Hybrid Monitoring Strategy

% of estimated CH₄/N₂O CO₂e.
% applied to overlapping vessel-level commissioning/data-system costs.

Measurement & Verification Readiness

Measurement-planning screen only: emission factors in g/kWh are user inputs used to estimate emissions and prioritize sources. They are not IMO default emission factors and are not a substitute for test-bed, onboard or CEMS measurements. Data completeness, uncertainty and method-readiness values are planning inputs. Final analyzer selection, sampling arrangement, calibration, emission-map generation, engine-load signals, missing-data treatment, verification and reporting must follow the applicable IMO, EU, flag, Administration, verifier and equipment requirements.
2026 regulatory context: IMO MEPC 84 adopted MEPC.414(84) for test-bed and onboard CH₄/N₂O measurements, MEPC.415(84) for engine-load monitoring and calculation of emission values, and MEPC.416(84) for CEMS used to quantify CH₄ and/or N₂O from marine diesel engines. The IMO 2024 LCA Guidelines use GWP100 values of 28 for CH₄ and 265 for N₂O. Separately, EU maritime MRV has required monitoring and reporting of CH₄ and N₂O emissions released from 2024 onwards. Verify the method accepted for the actual ship and reporting program. IMO MEPC 84 Resolutions · IMO LCA Framework · EMSA Maritime MRV
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