Since 2000, Line Marie Pedersen's main practice area has been environmental law. She has assisted a number of Danish enterprises, institutions and public authorities in environmental matters, including registration and notification of contamination, planning of pollution abatement procedures, clean-up issues, environmental compensation, environmental damage, etc, and has also advised on planning issues in relation to planning legislation and nature conservation.

Moreover, Line has thorough knowledge of electricity supply and heat supply legislation and provides advice and assistance to energy enterprises.