Zero impact that I can tell. Our solar inverter is hooked to a 30 amp circuit in our breaker box. I’m pretty sure the inverter gives very stable power when there is sun. When there isn’t it powers down. Had it for 15 years and have done comparisons. YMMV, can’t speak to other interconnection arrangements.
Rooftop solar panels impact on audio SQ
I am getting a new roof on my sunny California home and am considering adding solar panels with the new roof. I recall that maybe Stereophile did a piece associated with such installation and its effects on the resulting SQ of the reviewer's system. I welcome any information from my erudite friends on this forum as to issues that I need to be concerned about with adding solar panes wrt to the resulting impact on my power supply and the SQ of my system. I do have an AQ Niagra 1200 device into which all my gear is connected.