Heidi Malmberg

Partner (elect) / Helsinki

About Heidi

Heidi is a dual-qualified (Finland and New York) regulatory lawyer who focuses her practice on the permitting of infrastructure, industrial operations and environmental liability questions. She has worked on many landmark or first for Finland industrial and infrastructure projects within various industrial sectors, including the battery materials sector and off-shore infrastructure projects. Heidi has been ranked by IFLR1000 as a Notable Practitioner for project development in the mining and natural resource sectors.

Heidi has almost 20 years of experience in complex permitting and environmental liability questions first from an authority perspective and later from private practice. She takes a pragmatic and solution-oriented approach and strives to find innovative solutions for complex situations.

Prior to joining Borenius, Heidi was a Partner at another major Finnish law firm.



  • Project development – Notable Practitioner
  • Environment and Climate Change – category environment: Recommended

Selected References

  • Vattenfall: purchase of the Korsnäs/Kvarken off-shore windfarm development area*
  • Battery materials sector: Heidi has assisted several operators in the battery materials sector with permitting related questions and appeals process*
  • Renewable energy sector: Heidi has assisted several developers and owners of solar and wind power assets with the strategic development and the permitting of the assets, as well as with due diligence processes related to sale, purchase and finance of renewable power assets*
  • Infrastructure projects in the EEZ: Heidi has been involved in the permitting and strategic planning for several infrastructure projects, including pipelines and cables as well as off-shore wind.*

*prior to joining to Borenius


  • Partner (elect), Borenius, 2024–
  • Partner, Castrén & Snellman, 2024
  • Various positions, Castrén & Snellman, 2005–2024
  • Lawyer, Länsi Suomen Ympäristökeskus, 2003–2005


  • LL.M., Duke University School of Law, 2008, USA
  • Court training 2002–2003
  • Master of Laws, 2002, University of Turku, Finland


  • Swedish, Finnish, English