KOSTAL installer portal: good, comprehensive advice

Anyone purchasing a solar system expects good quality and performance. Our KOSTAL customer service team is on hand to answer any questions about our KOSTAL inverters. Fast, uncomplicated and personal.

Service & support: KOSTAL customer service - always there for you

Service and Support

Smart connections.Academy: Seminars and webinars

Smart connections.Academy
KOSTAL Video-Tutorials mit Tipps für einfache Installation und Inbetriebnahme der Wechselrichter

The KOSTAL video tutorials make it very easy to install inverters

Video tutorials

Take part: KOSTAL programme for certified installers

Become a certified installer

Wholersale overview: You will find the wholesaler you trust here

To the wholesale overview

Planning photovoltaics: System design made very easy with the KOSTAL Solar Plan

Download the KOSTAL Solar Plan