Our team of experts have a long tradition of and considerable experience in providing advisory services on environmental law and planning law matters. Our clients include listed companies, international groups, government institutions and state-owned companies, local authorities, local utility companies, oil companies, insurance companies and small and medium-sized enterprises.

We advise our clients on a wealth of environmental law and planning matters, including:

  • Environmental law – waste and incineration, soil contamination, activities requiring authorisation, water supply, waste water and nature protection
  • Planning law – all matters related to the Danish Planning Act such as environmental impact assessment (EIA)
  • EU law – we have extensive experience in environmental EU law and advise clients on issues related to chemicals, tendering, packaging and other areas widely regulated at European level 
  • Environmental law and M&A – environmental and planning law aspects may be a decisive factor in the completion of successful M&A, for instance, authorisations and possible enforcement notices. We have a technical understanding of and legal expertise in this area and regularly collaborate with leading consulting engineering firms in Denmark

Our advisory services

We are able to familiarise ourselves with and understand our clients' businesses and activities, and we provide advisory services that create value for them. Our legal advisory services are based on a high degree of understanding of the given commercial or political reality. We also have considerable litigation experience in the area of public law and the special issues that apply when administrative decisions are tried before the courts.

Thanks to our experience, we quickly spot and advise clients on the solution to a environmental law og planning law issue. Our clients praise us for being "good value for money", one reason being our comprehensive interdisciplinary fingertip knowledge, extensive use of IT tools, public sources and systematic application of previously acquired knowledge.


  • Shell - assistance with carbon emission rights and carbon capture and storage issues
  • DONG Energy A/S - regulatory issues regarding DONG’s North Sea licences
  • Femern A/S - assistance with compulsory acquisitions and land purchases for the construction of the Fehmarnbelt fixed link
  • Københavns Lufthavne A/S - assistance in handling a dispute with Taarnby Local Authority
  • Novo Nordisk A/S - regulatory issues in relation to the Danish Heat Supply Act
  • City of Copenhagen - environmental law issues in relation to the construction of the Cityringen train circle line
  • NordStream - advice on regulatory matters regarding a Baltic Sea gas pipeline
  • Hartmann Packaging A/S - regulatory issues in relation to the Danish Heat Supply Act


  • Plesner provides "the highest level of practical and theoretical knowledge" with "no-nonsense advice and a pragmatic approach". (2019)
  • Plesner covers the full array of contentious and non-contentious work, including environmental due diligence and planning matters. (2018)
  • Respected commercial practice which advises private companies on public law issues, particularly environmental issues and expropriation, as well as general administrative and constitutional law. 

    "Our first choice due to its pragmatic approach to issues, high quality counsel and delivery and responsiveness." (2017)
  • Within Environment, Plesner is a first tier firm.

    "A first choice", Plesner advises on all aspects of environmental law. (2017)
  • Within Environment, Plesner is a first tier firm.

    Plesner's team has extensive experience in handling contentious public law matters before the Danish courts, as well as supporting the M&A practice on environmental due diligence. (2016)

  • Represents a mix of local government departments in a broad range of public law cases. Offers considerable expertise within environmental, planning and energy law, and has experience of handling expropriation cases. Often engaged in large infrastructure projects for private parties, as well as advising on general administrative and constitutional law. (2015)
  • Within Environment, Plesner is a first tier firm. Plesner’s wide-ranging expertise includes planning law, waste disposal, soil contamination and water regulation. (2015)
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