How to calculate the ROI of climate risk management: guide with variables and methodology

ROI of climate risk management is not calculated like marketing ROI. There is no magic formula. But there is a method that separates avoided cost from optimism.

The central question: how much does it cost not to have climate intelligence? The answer is the sum of what you have already lost plus what you could lose.

Variable 1: past cost (what has already happened)

Survey the last 3 to 5 years of climate events that impacted operations:

1. Downtime hours due to climate events × hourly operating cost;

2. Demurrage and fines paid during lost windows;

3. Asset damage (repair + replacement);

4. Insurance premiums adjusted after claims.

This is the minimum cost of unmanaged risk.

Variable 2: future probability (what could happen)

With 10 to 20 years of historical reanalysis, you can calculate the expected frequency of each hazard for the coming years:

1. Annual probability of each hazard at the asset's coordinates;

2. Worst-case scenario in 5 and 10 years (20 or 50 year return period event);

3. Trend: has frequency increased in the last decade? (3× more extreme events in Brazil, Atlas Digital MDR).

Variable 3: avoided cost (the system's ROI)

ROI equals avoided cost minus implementation cost. Documented examples:

1. Santos Brasil: vessel waiting time dropped from 7 to 3 days. R$ 105 million/year in additional revenue. Direct avoided cost: reduced demurrage + more operational windows (G1 Feb/2026 + master deck).

2. Puerto Mejillones, Chile: 426 alerts issued in Q1 2026 alone. ROI 20:1. US$ 305 thousand/year in benefits (master deck slide 36).

3. Capstone Puerto Barquito, Chile: 7 digits USD/year in avoided cost, 48 to 72 hour advance warning (master deck).

The final calculation

ROI = (Annual avoided cost − Annual system cost) / Annual system cost

Where avoided cost = sum of what you stopped losing (less downtime, less demurrage, less damage) + additional revenue (more window hours utilized).

The data exists. The calculation is replicable. The question is: how much is your operation losing without it?