I currently have a 200amp panel on my house that feeds a 60amp panel at my shop about 200’ away.

I have a large unobstructed space behind my shop (even further from main panel) that I would like to put a ground mounted array.

Is there any scenario where I can feed solar into my shop panel? Or does it always need to feed into my main?

If I wanted to do a battery backup for my home, I assume the battery would need to be at the main to have a proper interlock.