What is this box in my garage?

I'm building cabinets in my garage and this junction box is in the way. Does anyone know what this is for? I was thinking it could be solar related, but I'm not sure. There's nothing in it except for what seems to be a ground wire and a string to (I would assume) pull wires from somewhere else. I was hoping I could remove it or relocate it to somewhere else where it isn't in the way.