My guess is that they were trying to find something illegal in the solar electronics, i.e. Something not up to building code. If the house is that simple, that

My guess is that they were trying to find something illegal in the solar electronics, i.e. Something not up to building code. If the house is that simple, that's the place to look. Either they found something and removed them or they didn't and were too lazy to put them back. I guess since they removed all 3 instead of just 1 of 3, you charitably interpret it as the former.