EET Schweiz by ees.swiss AG — Unterdorfstrasse 5, 3072 Ostermundigen, Switzerland

Stay away from this company – they're all about making a sale, but their customer support is terrible. A little over two years ago (December 2023), we ordered a Solmate 2 storage system to supplement our solar panels. The Solmate was delivered missing both the stand and the 10m connection cables we had ordered – so we immediately contacted EET Switzerland. After not receiving a response for a considerable time, we obtained the connection cables ourselves. The system worked well until last October, apart from a few minor issues that we were able to resolve ourselves. In October 2025, the storage system failed for a few days – but then restarted automatically – so no problem. At the beginning of November, however, the Solmate failed completely. Numerous attempts to restart the system – including complete resets – were unsuccessful. We received a response to our support email inquiries with a significant delay. On November 12, 2025, we were informed that there had been an increasing number of failures of the S2 models in the past, and that the company had decided to discontinue service and offer customers an upgrade to an S3. Our warranty would be honored. In a subsequent phone call, we were then informed that Graz would provide 20 Solmate 2 units to replace defective Solmate devices, but that the new Solmate 3 devices were already sold out and would not be available again until March 2026 at the earliest. Since this conversation in early December 2025, we have neither received a replacement device nor heard anything from EET Switzerland. Even emails and a registered letter sent by our legal insurance company at the beginning of this year have gone unanswered.

Gustaaf Barbez

Small solar system on the roof for personal use. The business transaction was friendly and competent. Deadlines were met. The entire installation of the system in spring 2025 took a good two hours – very quick, in my opinion. Subsequent phone calls were answered promptly and competently. The system is operating to our complete satisfaction. I can recommend it. Thank you very much.

Gaudini Marino

Simply fantastic! My plug-in solar system was installed a year ago. Everything went wonderfully and quickly, from ordering to professional installation. Thanks to the team, keep up the good work! Many thanks, Manfred Rätz

Mani

Everything was great. Unfortunately, the consultant made a mistake during the initial consultation, which I only noticed after the installation. After contacting the managing director, we were able to resolve the issue quickly and easily so that it worked out well for both of us. So now everything is exactly as I had envisioned. The installers also worked cleanly and efficiently, and they even gave me some helpful tips. Therefore, I can recommend the company. Now I'm hoping for lots of sunshine!

Schöni

Friendly, very focused advice. The installation date and duration were met. Setting up the envertech app was only possible with technical intervention from the salesperson. It runs smoothly.

Fredy Glaser

Very friendly service from the start. We will definitely recommend them. We are also grateful to EET-Switzerland for their help with the not-so-simple app.

ZellerS