Keystone Solar & Energie

From the initial consultation to the installation of the PV system, we felt very well advised and competently supported. Mr. Bendel and Mr. Lachhab visited us for the consultation. They explained in detail what needs to be considered when installing a PV system, including any potential disadvantages related to structural conditions (shading). During this appointment, they also inspected the premises where the converter and battery storage were to be installed. The control cabinet was checked. The quote they provided included a very detailed breakdown of all materials, labor, overhead costs,

Meine Anlage wurde 2021 von Keystone geplant und gebaut. Die erste Kontaktaufnahme erfolgte über das Photovoltaikforum. Die Beratung durch M. Bendel war sehr ausführlich telefonisch, im Onlinemeeting und bei einem vor Ort Termin. Es wurden mehrere Optionen geprüft und auf meine Wünsche wurde eingegangen. Es wurde nicht versucht mir etwas aufzuquatschen. Das Angebot war detailliert und ausführlich, die Umsetzung erfolgte zügig, die Anmeldung beim Netzbetreiber wurde vorbereitet. Bis jetzt erfüllt die Anlage meine Erwartungen. Ich hatte während der gesamten Umsetzung ein gutes Gefühl und das ist

My system (9.99 kWp with 27 solar panels + 5 kWh battery storage) was installed at the beginning of May 2022. I'm still extremely satisfied with everything. From the initial consultation with Michael Bendel, through the contract signing, the application process, the panel installation by Michael Lechner's team, and the electrical installation by Enerquinn, right up to commissioning, everything went perfectly. Aside from a few signatures on all the paperwork, which Michael Bendel also handled completely, there was absolutely no work or stress for me. All the installation work was carried out se

We've been using our Keystone PV system since the beginning of 2023 and are extremely satisfied! The consultation and installation went smoothly, and Mr. Bendel was always available to answer our many initial questions. He handled our special installation requests very flexibly. The after-sales support from Mr. Bendel was also excellent! We highly recommend Keystone!

Installation of a PV system, completion in July 2025. The process and scheduling went smoothly, and the preparation for the funding application was very helpful. Communication was always pleasant, friendly, and direct. Both sides of the roof are covered, the battery is in the basement – ​​all in all, extremely satisfied.