I have a grid-tied system of 5.2kw, no battery backup. I've had it since 2017 and it is awesome! People in the area have been bitching about how electricity has shot up in price, but mine has remained steady.

I also have a separate system of solar hot water, since my hot water was oil heated when I bought the house. That I've had since 2011. I love that it has an 80 gallon tank so that when the sun is heating the water, it heats the whole tank, but in the winter when the panels are covered with snow, there is electric backup that heats only the top 30 gallons.