TNL

Profile

TNL is a specialised provider of environmental planning, permitting consultancy and construction services for complex infrastructure projects. Originally founded as an appraisal firm by Frank Bernshausen in 1994, TNL now oversees multifaceted construction developments such as wind and solar parks, high-voltage and ultra high-voltage lines, and traffic infrastructure projects. TNL provides its clients with valuable support along the entire project value chain: from environmental preliminary analyses and official permit procedures to construction supervision and implementation.

As well as this, the company is an expert in complex ecological projects and is known for its ability to develop practicable solutions. It is also an established service provider for complex large-scale projects with the four German transmission system operators TenneT, Amprion, 50Hertz and TransnetBW. The company employs around 250 people at four locations.

Management Buyout

Majority investment of DBAG ECF IV

First invested

August 2026

Total output 2025

€30mn

As of August 2026

Contact

Christoph Grossekämper

Managing Director

Christoph Grossekämper joined Deutsche Beteiligungs AG in 2020.

He began his professional career in the M&A department of Deutsche Bank in Frankfurt/Main, where he worked from 2007 to 2009. Afterwards he was part of the enterprise improvement practice of Roland Berger and AlixPartners till 2016. There he advised on numerous projects in various industries with a focus on the German Mittelstand and corporate carve-outs. In 2016 he joined a stock listed industrial holding in Germany. Christoph Grossekämper was leading the M&A team and was responsible for various transactions in the GSA region with a focus on the Mittelstand and corporate carve-outs. He has ten years of experience in private equity.

Christoph Grossekämper holds a Bachelor of Arts in Finance from Maastricht University and a Master of Science from CASS Business School, London. He also studied at Bocconi University, Milan.