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The Future of Energy. Boldly. Redesigned.

We are one of the leading, medium-sized consulting companies in the field of renewable energies and energy efficiency. We have been providing advice exclusively on projects of this kind for more than 25 years. We always focus on trusting work and finding the best solution for and with our clients.


We provide accurate and secure solutions for complex tasks. We don’t look for a quick answer, but instead the right one.

Our strengths

We provide clear orientation in terms of strategy, law, taxes and profitability.

company profile Sterr-Kölln & Partner

Company Portrait

When was Sterr-Kölln & Partner founded? Since when have we had offices in Berlin and Paris? You can quickly and clearly find the most important figures and data about our company here.