About us

Sonnis Energy Bulgaria is a partnership between Sonnis Energy GmbH and one of the most established Bulgarian system integrators – Kontrax. The German parent company has been active in renewable energy for more than ten years, specialising in the planning, construction and maintenance of solar systems, as well as the installation of batteries and electric vehicle charging stations.

Since 2022, Sonnis Energy Bulgaria has been delivering projects for businesses, households and municipalities, applying proven practices from the German market. Our team has many years of professional experience in Germany in building renewable energy systems, with a focus on industrial solutions, energy efficiency and the integration of modern technologies.

We work closely with non-governmental organisations, research centres and universities that promote sustainable practices, scientific research and environmental protection. This enables us to apply the best international standards and to support the green transition in Bulgaria.

Partnerships and memberships

We work with Kontrax, a leading Bulgarian system integrator with over 30 years of experience in building and maintaining technology and engineering solutions in the private and public sectors. We also partner with non-governmental organisations, research centres, municipalities and universities to develop sustainable solutions, innovative business models and green transition initiatives. Sonnis Energy Bulgaria is a member of the German-Bulgarian Chamber of Industry and Commerce.

Our responsibility

At Sonnis Energy Bulgaria, we believe that sustainable development is the only way forward. That is why we work purposefully to continuously improve our environmental performance by reducing our carbon footprint and managing resources efficiently, while ensuring predictability, transparency and high quality for our clients in every aspect of our business. The company has been awarded an EcoVadis Gold Medal, placing us among the top 5% of rated companies worldwide. The assessment covers company practices in the areas of environment, ethics, sustainable procurement and social responsibility, and confirms our commitment to sustainable and responsible management.

In addition, we actively participate in public initiatives promoting photovoltaic systems, support conferences on the development of energy communities and take part in educational programmes at schools and universities.