The Age

A linden tree (lat. tilia) can live up to one thousand years. A popular saying has it that "A linden comes for 300 years, stays for 300 years and then goes for 300 more."

Knowledge and experience

Tilia was founded in 2009, by people with broad international experience and a common vision of the future of utilities and public services.

We help public, national or local institutions, communities, municipalities and other public services and industrial companies achieving concrete progress in the fields of energy, environment, water, waste and other essential services, while improving efficiency, increasing competitiveness and get set for the future.

Our clients benefit from our strong operational experience, an independent perspective and a range of strategic, technical, financial and legal expertise.

We strengthen our clients' capabilities and enable them to achieve their goals in a sustainable way.

Our subsidiaries

alles klar, founded in 2009, is specialized in solutions for decentralized wastewater systems. KLÄRCHEN® is a practical decentralized clean solution working without electricity.

Tilia Solutions, founded in 2012, is dedicated to energy efficiency solutions for industrial clients.

Tilia Effizienz, was founded in 2015 for the development of energy efficiency solutions independent of manufacturer influences. 

Decon international has been a subsidiary of Tilia since 2016. Decon internaional provides an extensive package of engineering and advisory services worldwide. 


Open to new Thinking.

Christophe Hug: "To meet the challenges of the future, we have to find new models for working together. If this sounds like something you need, get in touch to learn more about a Dynamic Partnership with Tilia!"
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Knowledge Development.

Jana Müller: "What I particularly appreciate about Tilia, are the chances given by regular training and personalized capability development plans."
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