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.