I am a "NABCEP Certified PV Installation Professional" who specializes in off-grid, custom controls/electronics, and highly custom jobs. Of course I also do the regular grid tie solar, (anybody can do that). I live off grid in northern Sanpete County, UT, USA. I pretty much service the whole state but I focus on the areas from Emery county, to Summit county, to Salt Lake, to Juab county, and everything in between. I got most of my training by SEI and then by experience.
I am also highly into all kinds of DIY. I find that almost all forms of construction rely primarily on common sense and with a little experience you can do most of your own work... but... no, I don't do sheetrock or concrete. Certain things are best to have done by someone else.