Inverter defective? We will help you!


Manufacturer independent inverter repair

We are here for you! Phone: +49 (0) 5382 - 955 979 - 0 Monday - Friday from 8:00 a.m. to 5:00 p.m.

Kostal Solar Elektrik Kostal Inverter

Kostal Solar Electric GmbH, headquartered in Freiburg, has been an integral part of the traditional German company Leopold Kostal GmbH & Co. KG since 2006. Founded back in 1912, this group of companies is now an integral part of German economic history and is still an independent company with its global headquarters in Lüdenscheid.

We take care of the maintenance and repair of your inverters and you get a service for your inverter repair from us. Just give us a call or send us an email, we will then contact you.

All inverter models from Kostal Solar Elektrik Data Sheets & Downloads

Kostal Solar ElektrikInverter

Over the years, the company went through some changes, which often went hand in hand with the respective technical developments of the corresponding time. Today, the Kostal Group has essentially specialized in the development and production of electrical, electromechanical and mechatronic products, with the Kostal Group always focusing on the technologically high quality segment of these product groups. Various branches of the Kostal Group are now located in almost 20 countries around the world.

Kostal Solar Electric GmbH itself is now represented in several European countries. Your main focus is on the traditionally strong markets for photovoltaics. Among other things, Kostal Solar Electric GmbH offers its optimized product range as well as its sales network on the respective market in Germany, France, Spain, Italy and Greece.

Equipped with a correspondingly strong and competent parent company, Kostal Solar Electric GmbH is able to offer inverters for a wide variety of applications. The corresponding devices have a high level of functionality and an extremely extensive range of equipment. Inverters from Kostal Solar Electric GmbH can therefore also be used optimally for photovoltaic systems of the most varied of dimensions. In line with the company's philosophy, the end devices are easy to install and equipped with comprehensive extras for smooth communication. In addition, the inverters can be configured in just a few steps according to the requirements in their respective country of use.

In terms of service, Kostal Solar Electric GmbH relies on comprehensive communication in combination with the latest technology. If necessary, taking advantage of the support from Kostal Solar Electric GmbH is simple, quick and user-friendly. In addition to the appropriate software, Kostal Solar Electric GmbH's customers also have their own area on the company's website that contains a downloadable solution for practically every conceivable situation. Kostal Solar Electric GmbH's own service hotline provides additional support.

If you have any questions about the manufacturer's products, you can also contact the experts at AEET Energy Group GmbH. We not only carry out the maintenance of the solar system for you, but also take care of, for example, the repair of the inverter. Remember that regular maintenance of the solar modules and inverters can significantly extend the service life of the solar system. Each individual module should be able to work properly in this regard. If the inverter becomes defective over the years, Kostal will of course offer you an extensive guarantee under which you can file the complaint. Should a repair be necessary, we will buy and order the corresponding spare parts and integrate them into the solar system on site in order to keep the cost factor as low as possible for you. Keep in mind that an inverter repair is also significantly less harmful to the environment compared to replacing the entire device.

Inverters from Kostal Solar Electric GmbH support either a single-phase or a three-phase feed-in of the generated energy and ensure conversion without a transformer. The central inverter from Kostal Solar Electric GmbH is based on the latest technical knowledge and is designed to meet the medium-voltage guidelines for Germany. It is designed for operation with a wide input voltage range in photovoltaic systems. The forward-looking planning of Kostal Solar Electric GmbH also allows a corresponding adaptation to other countries as well as a further development of the central inverter in order to be able to cope with larger DC voltages.

Repair process

  • Fill out Form
  • Send in the inverter
  • Report & repair
  • Return shipping
Further information *depending on the order situation! Duration: approx. 4-6 weeks*