>>speckx+(OP)
I've spent many hours debugging my Macbook's erratic insomnia and the only thing I know is that WindowServer is the culprit and it'll likely require a full OS reinstall, which has been on my todo list for months.
The only thing worse than opening my laptop bag to find a hot, dead laptop a couple times a month is the inevitable response of: "Well, you must be doing it wrong, that doesn't happen to me!"