The Street

“Berlin's famous avenue Unter den Linden was initially a riding path which led from the Berlin Castle into the Tiergarten. Today it reaches the centre of Berlin, bordered by linden trees (lat. tilia).”

Your partner in energy, water and environment

Tilia is the partner of cities, communities, public and private utilities, industrial businesses and co-investors, who seek to develop new projects, make new investments, improve their operations, redefine their strategy and manage increasingly complex challenges in the fields of energy, water and environmental services.

The model created by Tilia is flexible; it can range from consulting and project management support to jointly realized projects eventually leading to joint investments.

We cover all topics related to strategy, governance, operational optimization and development of new investments.

Our model is always based on a strong commitment to our customers, enabling them to achieve jointly defined concrete objectives.

Founded in 2009, based on an international experience and a common vision of the future of utilities and public services. Today Tilia and its subsidiaries employ almost 100 employees and count more than 500 contractual references in 24 countries.


European Commision publishes Tilia study on efficient district heating and cooling systems

We believe efficient district heating and cooling systems can provide an evolutive backbone to balance energy transitions. Tilia has prepared the new report of the JRC on Efficient district heating and cooling in the EU, providing an in-depth analysis of DHC systems in Barcelona, Brescia, Copenhagen, Gram, Hafencity (Hamburg), Paris-Saclay, Stockholm and Tartu”.

Abstract of the study:
Based on a holistic case studies analysis of 8 efficient district heating and cooling systems in different European Member States (Denmark, Estonia, France, Germany, Italy, Spain and Sweden), the study identifies the key factors enabling to develop high quality, efficient and low-carbon DHC systems, discusses how these key success factors can be replicated in the EU and provides a better view on the role and features of these systems, which can provide an evolutive backbone to balanced energy transitions. Finally, it suggests some potential policy guidelines to support their deployment.

link to the report


New waste water treatment in Bulgaria

A center for waste water treatment was set up in Vraza based on the model of BDZ in Leipzig. Tilia played a key role in the idea, the preliminary planning, the conception, the execution planning and the commissioning of the demonstration field. The alles klar donated a facility of type KLÄRCHEN to the center.


Tilia works alongside the City of Lyon, who has developed some of the most innovative projects in the field of digitalization of urban services and smart, in order to develop, organise and implement of the next steps of its smart city services and infrastructure.

Lyon first has developed several smart grid demonstrators together with many national and international partners (Lyon Smart Community, Greenlys, Watt et moi, Smart Electric Lyon, Confluences…) and is now paving the way to the next steps through the Lyon Living Lab project. This project will enable the Greater Lyon, its grid operators and other stakeholders to use the energy data to manage more efficiently its grids and to develop new services for the benefit of end users, while strengthening the local economy and its energy transition.

Tilia also helps the Metropolis in developing energy innovation projects which create value, especially in partially developing renewable energy production within industrial sites.



decon international has been a subsidiary of Tilia since 2016.

Decon international provides an extensive package of engineering and advisory services worldwide. It supports projects in the fields of energy, energy efficiency, water, waste water, and smart cities. Decon has successfully realized hundreds of projects in more than 140 countries over the last few decades.

Our name

Tilia is the Latin name for the linden tree, a tree with a sound root structure, a sturdy trunk and solid branches. It is a tree which grows and flourishes consistently as long as it's properly planted and taken care of.


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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Shared Responsibility.

Vincent Aumaitre: "Tilia shares targets and responsibilities with its clients through the Tilia partnership."
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