Add Direct Emissions- Continuous Measurement Method

Overview

The Continuous Measurement Method in the kolum CBAM Supplier Portal allows you to directly measure greenhouse gas (GHG) emissions from your installation’s emission sources. This method relies on real-time data collected through a Continuous Emission Measurement System (CEMS) and is typically used by facilities with large or complex emission points, such as smokestacks or integrated production systems.

Where multiple emission sources exist within the same installation, each source must be measured individually, and the total emissions are calculated by summing all the measured values across sources over the reporting period.

Minimum data requirements:

• GHG concentration (g/Nm³)

• Flue gas volume (Nm³)

• Operating hours

1. Monitoring Method

Select Continuous Measurement as your monitoring method.

This method measures emissions directly at the emission source rather than calculating them using carbon content or emission factors.

kolum will then guide you step-by-step through all required measurement inputs for CBAM compliance.

2. Fuel, Material or Product Used

Choose the fuel, material, or product used in your emission source.

• Select a source stream from the dropdown (e.g., Crude oil, Blast furnace gas, Coke oven gas, etc.).

• You can also create a new entry if your specific source is not listed.

A source stream is any material or product that produces GHG emissions when used or made.

This field helps define the specific emission source that your CEMS readings correspond to.

3. Greenhouse Gas Concentration

Enter the measured GHG concentration in grams per normal cubic meter (g/Nm³). This represents the hourly concentration of greenhouse gases in the flue gas flow, measured during operation for an hour or another reference period.

Example: 2 g/Nm³

The data should be taken directly from your CEMS or equivalent monitoring equipment, verified according to applicable QA/QC procedures.

4. Volume

Enter the flue gas volume in normal cubic meters (Nm³) for one hour or a shorter reference period. This value should be determined by integrating the flow rate over the reference period.

Example: 2 Nm³

This figure, combined with the GHG concentration, determines the total quantity of greenhouse gases emitted during the reference period.

5. Hours Operating

Enter the total number of hours (or shorter reference periods) during which the measurement-based methodology was applied. This includes both the hours with measured data and any hours for which data was substituted.

Example: 2 hours

Ensure that this figure represents the entire period during which the monitored process was active and measurements were taken.

6. Review and Submit

Once all data fields are completed, review your entries in the summary section before submission.

Review includes:

• Monitoring method selected (Continuous Measurement)

• Source stream (fuel, material, or product)

• Measured GHG concentration (g/Nm³)

• Volume (Nm³)

• Hours operating (h)

Confirm that all entries are accurate and consistent with your facility’s monitoring records before proceeding.

7. Summary of Required Data Points

Data Point	Description	Unit	Source
Fuel, Material or Product Used	The source stream associated with emissions	—	Selected from dropdown
GHG Concentration	Hourly or reference-period concentration of GHG in flue gas	g/Nm³	From CEMS data
Volume	Flue gas volume over reference period	Nm³	Integrated flow data
Hours Operating	Total monitored hours	h	Operational logs / monitoring reports

kolum Tip

The Continuous Measurement Method is ideal for installations with high emission volumes or where direct measurement is required by regulation. Always ensure that your CEMS or equivalent system is properly calibrated and certified to guarantee the accuracy of your CBAM data submissions.