Everything was installed as agreed, the process was quick, and the system is running smoothly. That's how it should be.

I had a photovoltaic system with battery storage installed. The entire process, from planning to implementation, was very professional, reliable, and dependable. I especially appreciated Mr. Hartmann's commitment to finding the best solution for my specific situation, his proactive approach to identifying and addressing any existing issues, and his immediate rectification of those issues. I fully agree with the previous reviews.

I was extremely satisfied with Energietechnik Hartmann and PV-Gutachter Hartmann. Professional advice, fast implementation, and top quality. Highly recommended! Many thanks.