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

Your query is in the right hands with us
Please contact KOSTAL Solar Support if you
- Have general technical questions about our products
- Wish to report a fault with a KOSTAL product
- Have questions about KOSTAL monitoring tools (Solar App, Solar Portal)
- Want to design a PV system with KOSTAL Solar Plan
- Have any questions about the warranty/free KOSTAL Smart Warranty activation
- Are interested in a Certified Installer partnership
- Would like to order brochures and print media
- Are interested in our training sessions
- Would like to subscribe to the KOSTAL KONNEX newsletter
If available, please have your KOSTAL customer number ready for your enquiry.
For when things need to be done quickly: KOSTAL quick links
- You can record a fault using the reporting form here. For PIKO CI series please use click here.
- Video instructions for installation, activating a Smart Warranty or registering in the Solar Portal can be found here
- You can register here to become a Certified Installer
- You can order brochures and print media to pass on to your customers here
- For KOSTAL seminars and webinars, please register here
- For the KOSTAL KONNEX newsletter, please register here
- You can find images of our products here
- Advertisements for free use in newspapers and magazines can be found here
- Find the KOSTAL wholesale partner you trust here
As a business customer, 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.