SonnenWERKE GmbH

What SonnenWerke does, and especially their installers, is absolutely top-notch. No matter the weather, they're on the roof, contributing to the energy transition. We'd gladly use them again, but our roof is currently 'full'. (25x Aiko - 12 kWp / 10 kW storage with DC charger)

We partnered with Sonnenwerke Hamburg to complete the renovation of 12 houses – including the facade, plumbing, electrical systems, windows, and general energy efficiency upgrades. The project was extensive and demanding, but it was planned and executed with absolute professionalism. The coordination of all trades was structured and reliable. Deadlines were met, and the work was carried out cleanly and professionally. Particularly positive aspects included transparent communication, a solution-oriented approach, and fair pricing despite the project's size. A strong partner for complete reno

We had our photovoltaic system expanded by Sonnenwerke. We found the company to be very friendly, efficient, reliable, and yet professional, delivering excellent work. Everything, from the initial consultation and adherence to deadlines to the installation, went perfectly. Everyone involved was very friendly, conscientious, and reliable in their respective roles, from the solar panel installer to the electrician and the managing director, Mr. Barcelo. The entire team makes a very good impression. We felt completely well taken care of throughout the project and can recommend Sonnenwerke with

From the initial consultation to the installation, everything was simply top-notch! After a thorough on-site consultation and a detailed quote, our balcony power plant with four modules and storage was delivered promptly and professionally installed on the pitched roof. It works reliably, and I can track my electricity savings daily via the app :) Bruno Barcelo and his team did an excellent job – quickly, cleanly, and with great care. Highly recommended! Thank you again!

From initial contact to installation, simply top-notch! After receiving a detailed quote, our balcony solar power system with four modules and a battery was installed promptly and professionally on our pitched roof. Based on Mr. Barcelo's experience and expertise, I even changed the panel arrangement to a completely south-facing orientation. The entire team carried out the installation very cleanly and with great care (for example, the exceptional cable routing in the roof). I appreciated the additional commissioning of the modules and battery as a nice bonus, which was included free of charge