Public methodology

How the Green Energy Transition Tool calculates results

This page summarises the formulas and scenario logic from METHODOLOGY.md. It contains no submitted questionnaire data, no port names, and no port-specific benchmark values.

Scoring formula

The Port Score combines five self-assessed factors. Each factor is scored from 1 to 5, multiplied by its weight, summed, and mapped to a 0-100 scale.

portScore0to100 = 20 * sum(factorScore * weight)

Green transformation strategy

20%

Management approach and capability

25%

Infrastructure readiness

20%

Superstructure and operations

20%

External participants

15%

Emission formula

The deterministic engine converts fuel, power, and operating hours into emissions using admin-editable reference factors.

N = fuel / (relativeConsumption * hours)

CO2 = CO2_factor * fuelMass

NOx, CO, PM = factor * averagePower * hours

Energy and cost KPIs

Energy KPIs aggregate electricity, fuels, gas, and on-site renewable generation. Cost KPIs multiply consumption by the submitted tariffs.

  • Total annual energy = electricity + fuel energy equivalents.
  • Renewable share = renewable energy / total energy.
  • Energy intensity = total energy / throughput.
  • Emission intensity = CO2 / throughput.

Technology catalogue

Scenario toggles and recommendation rankings are based on the following technology catalogue.

1

Shore power for vessels at berth

2

Equipment electrification

3

Renewable integration such as PV, wind, and hybrid systems

4

Digital energy management and smart-port analytics

5

Alternative-fuels readiness for LNG, hydrogen, biofuels, methanol, or ammonia

Scenario logic

The engine generates Conservative, Optimal, and Risky transition pathways. Each pathway applies electrification, renewable share, investment level, deployment rate, target year, and uncertainty assumptions to the baseline.

Conservative

Lower investment, slower deployment, smaller electrification and renewable changes.

Optimal

Balanced investment and deployment assumptions.

Risky

High ambition, faster deployment, larger uncertainty margins.

Each scenario returns projected energy mix, CO2 trajectory, cost trajectory, resulting KPIs, and financial indicators. Financial outputs are indicative and should be reviewed before investment decisions.