EU ETS & CII compliance, verified

Know your number before the regulator does.

FuelFlow calculates your EU ETS exposure and CII rating from real voyage data — validated to within 0.21% of THETIS-MRV.

Try the live calculator → See the validation ↓
CII rating scale
0.21% variance
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FuelFlow places your fleet precisely on the scale that determines port state control scrutiny — no rounding, no guesswork.

The problem

EU ETS costs and CII ratings are easy to get wrong on a spreadsheet — and expensive when you do. Most compliance tools have never been checked against real MRV-reported data. FuelFlow was.

Validation

Tested against a real ship, not a sample dataset.

We ran FuelFlow against AL KHOR (IMO 9085613) using its actual THETIS-MRV reported figures. The result held to within a fraction of a percent — a benchmark you can check yourself, not a marketing number.

0.21%
Variance vs. THETIS‑MRV
  • Benchmarked against AL KHOR, IMO 9085613
  • Compared directly to reported THETIS-MRV figures
  • Same methodology applied to every vessel you run
How it works
Input

Enter voyage data

Fuel consumption, distance, and CO₂ — the figures you already track.

Calculate

Get your number

EU ETS cost exposure and CII rating, calculated with current regulatory factors.

Report

Use it directly

Take the output straight into your compliance reporting — no reformatting.

Who it's for

Built for compliance teams, technical superintendents, and CSOs managing EU ETS exposure and CII ratings across a fleet — without waiting on a spreadsheet or a consultant.

See your number in under two minutes.

No signup required. Run your own voyage data and see the output for yourself.

Try the live calculator →