Everything that I have read recently has pointed me to the fact that solo mining is not profitable. I have a unique situation where my electricity is included and I pay nothing for it. It does not matter how much I do or do not use. Would it still be profitable or would I still be unable to reach ROI on one or two ASIC miners?
It would be greatly profitable to do this, this way for a hobby, but, you are not guarenteed to get anything.
I would recommend that you create a private pool for yourself of something like a Raspberry Pi or an old Computer that can connect to the internet but probably doesn't need a high CPU avaliability. Then connect a few ASIC miners such as 4 x antminer s5's and connect them to your new pool, leave this running and see what rewards you get for it!
(note: you may get nothing, but, it is likely you will get a few blocks in a few weeks and may earn more than being on a pool and don't have to pay reward fees of 1%!)
NOTE: If you are in an apartment or similar, you may be able to get some of your neighbours to get cheap mining equipment and join your private pool but then you will have to split the profits evenly.