Sterr-Kölln & Partner mbB

Emmy-Noether-Straße 2DE79110Freiburg
Phone:+49 (0) 761 490540
Fax:+49 (0) 761 493468
Clear solutions for a sustainable energy future!

Sterr-Kölln & Partner has been one of the leading consulting companies in the wind industry for 25 years with a team of lawyers, tax consultants, auditors, and management consultants.


Sterr-Kölln & Partner uses its extensive know-how to answer the legal, economic and tax questions of projects in the field of renewable energies and to bring them in line with the strategic challenges of its clients.

As an owner-managed, independent consultancy, we place our work at the service of efficient and environmentally friendly resource use. We consider energy along the entire value chain, with decentralised energy generation and consumption as our guiding principle. Above all, regional value creation is close to our hearts, which is why we particularly focus on onshore projects.

Our understanding of consulting goes beyond an interdisciplinary approach, and solutions are developed based on consideration of all factors. By integrated consulting we mean the balanced use of proven consulting methods as well as holistic consideration of all legal, tax and economic aspects - always with the overriding goal of developing and implementing a sustainable strategy together with our clients.

Within this holistic understanding of consulting, we offer our clients a wide range of services and are also available to answer questions on smaller issues.

•    Structuring, negotiation and drafting of project and purchase agreements
•    Design of strategic collaborations
•    Subsidy consulting
•    Financial and commercial due diligence
•    Legal and tax due diligence
•    Corporate finance and project finance
•    Public participation and crowdfunding
•    Development of new marketing models
•    Review and support of public law approval processes
•    Corporate and tax structuring of project companies
•    Advice on all questions of energy regulation law
•    Legal advice on liability and warranty issues

Together with our team in Paris, we successfully implement cross-border wind projects. The French government's energy policy goal of increasing the share of renewable energy sources to 32% by 2030 makes the market particularly lucrative for international investors. Our team in Paris has extensive knowledge of the market and is proactive in finding the right strategy for our clients to successfully implement their wind project in France. Through the close cooperation of our French and German lawyers and consultants, we ensure that your project is supervised and implemented with the highest quality.

We see the networking of individual energy sectors as an important component of the energy transition and of the future energy system. Accordingly, together with our partners, we increasingly advise our clients in the area of sector coupling. With various feasibility studies we support the introduction of green hydrogen into the energy system. Here, too, we see the solution in decentralised generation, i.e. producing renewable electricity locally. When the EEG support for the first wind farms expires in 2021, a veritable market for renewable electricity from post-EEG plants will open up. Decentralised hydrogen production will increase the demand for green energy, as it will secure the entry into a clean, CO2-free hydrogen economy.

Our references in brief
We are pleased that since 1994 our team of experts from the fields of law, tax and management has been able to shape the future of renewable energy together with our clients. We accompany your project from its strategic conception to the development and final implementation stages, and are also available as an experienced partner during operation. We have already provided integrated advice on over 300 wind projects with an investment volume of over 10 billion euros.

Feel free to approach us!

Members of:
  • Juristischer Beirat
more data:
  • Founded: 1994
  • Employees: 40 of which wind energy: 25