Cheers for reaching out to us here, and apologies for the belated response.
This is an excellent question! However, it would depend on the specific setup of your solar. For example, if you have your water set up on a controlled load, your solar production would not be affected. To get a certain answer, based on your setup, our solar service team will be able to help you. You can contact them on 1800 356 363 (option 4, then 3).
Please let us know if you have any other questions.