No, the use of the communication template is not compulsory but recommended.

The communication template is a tool that allows operators to determine the embedded emissions in CBAM goods according to the methodology specified in Implementing Regulation (EU) 2023/1773. The template ensures that all relevant source streams and emission sources, electricity consumption as well as relevant precursors are taken into account for the calculation.

The template contains a worksheet ‘Summary_Communication’ which contains all information needed by the reporting declarant. This worksheet thus facilitates communication between third-country producers and importers (or their representatives).

Pre-filled versions are available on the CBAM website to help users fill in the communication template. Additionally, a training video detailing all necessary steps is available under the following link.

Source: EC’s Questions and Answers on CBAM 

CBAM Regulation

• CBAM Regulation 2023_1773

• EU to support energy-intensive sectors with temporary decarbonization fund propos
• Why is the EU putting in place a Carbon Border Adjustment Mechanism?
• What is the current stage of implementation of CBAM?
• How does the CBAM work?
• How does CBAM interact with the EU Emissions Trading System (ETS)?