Decoding Maritime Decarbonization: How the MarineDeCarb EU ETS & FuelEU Calculator Works
- Marine Decarb
- May 10
- 2 min read
The EU ETS (Emissions Trading System) and FuelEU Maritime regulations introduced by the European Union have triggered a new financial and operational era for the maritime sector. Calculating your fleet's carbon footprint, selecting the right fuels, and avoiding millions of euros in penalties is no longer an option—it is a strict necessity.
This is exactly where the MarineDeCarb EU ETS & FuelEU Calculator, developed by industry professionals, comes into play. Let’s explore step-by-step how this completely free tool can guide your fleet into a greener and fully compliant future.
Step 1: Effortlessly Enter Your Voyage and Port Data

Say goodbye to complex Excel sheets. Thanks to the user-friendly tables on our main dashboard, you can input your vessel's leg and port consumptions in seconds.
Multi-Fuel Support: Did you burn both HFO and Bio-diesel during the same voyage? Simply add two different rows with the same "Leg No". The system handles the complex mathematics in the background.
Smart Scope Definition: The moment you log your port operations, the system automatically categorizes them as 100% Intra-EU, optimizing the calculations strictly according to official regulations.
Step 2: Define Your Vessel and Set the Carbon Price

Using the control panel on the left sidebar, you can enter your vessel's name and the current EUA (European Union Allowance) price in Euros (€). Since the carbon market is constantly fluctuating, we have also included a reliable link right below this panel so you can monitor live EUA prices.
Step 3: Financial Projections from 2024 to 2050


How much will these emissions cost your company in the future? Thanks to our advanced financial module, you can see your projected compliance bill from 2024 all the way to 2050 based on your current inputs.
In the chart, the Blue Bars represent the estimated EU ETS tax, while the Red Bars highlight the penalties incurred if you fail to meet FuelEU targets.
In the detailed table right below it, you can examine all these figures clearly.. Now you know exactly which years require immediate budget planning.
Step 4: Generate a Corporate PDF Report with a Single Click

You’ve completed all your analyses, but how do you present this to your management or clients? Simply click the "Prepare Report (PDF)" button located at the bottom of the left menu.
The system instantly takes your vessel name, fuel tables, and financial projections, converting them into an elegant, corporate PDF file. Download your report and share it immediately.
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Green Ships, Green Seas, Green World!



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