Service and contact

Available for all questions

Contact

Get in touch with us. Either use the form or contact us directly.

Your query always in the right hands

Please contact KOSTAL Installer if you

Have questions about your PV system (whether private or for your company).
Have questions about a KOSTAL inverter.
Have questions about a KOSTAL Energy Meter.
Have questions about your KOSTAL wallbox.
Want to report a fault.

Please understand that KOSTAL cannot accept queries of this kind. Learn more!

Find a KOSTAL installer near you.

You are welcome to contact KOSTAL Solar Support if you

Have questions about the KOSTAL monitoring tools (Solar App, Solar Portal).
Have questions about Smart Warranty activation in the KOSTAL Solar webshop.
Have questions about designing with KOSTAL Solar Plan.

As a system operator, you can reach KOSTAL Solar Support by phone at:

+49 761 477 44 100
Mon to Thu: 8 am to 12.30 pm and 1.30 pm to 5 pm
Fri: 8 am to 3 pm

Please also feel free to use our contact form.