https://www.bmu.de/FA1399-1
FAQ

What is being done to make the EU Council Presidency sustainable?

The German EU Council Presidency aims to organise events in a sustainable manner to protect the environment and stabilise the climate, i.e. we hold events that are sustainable as long as it is actually permitted under pandemic rules. The German government published a comprehensive guidance laying out its plans to ensure sustainability. For example, climate-friendly transport by train or public transport should be available, and venues should also be easy to reach on foot or by bike. Another part of the concept is waste avoidance and the prudent use of valuable resources such as water and paper. Any unavoidable greenhouse gas emissions that are caused by air travel or the events themselves will be compensated through high-quality certificates. This is already standard for business trips taken by federal employees.