We're rural so it's propane for the gas.
They set a 500 gallon tank last April, of course it was July before they came back out to run the gas line to the garage for the boiler (garage has radiant floor heat).
I finally turned it on last week when the weather started to cool off.
It doesn't seen to have to run the boiler a lot to warm the garage up.

The walls and ceiling have 6 inch thick insulation.

As for electric, there was already a 200 amp service to the old garage there.
What the pic doesn't show is that I connected the two buildings and the bathroom is between the two at the back of a carport area.
The bathroom/boiler room is 8 foot by 10 foot.

I definitely need to take some more current progress pics.

The insulation seems to work pretty well, I put a window A/C unit in a wall and it cooled it just fine this summer.
I need to finish the inside walls and ceiling, but the price of lumber has made me decide to wait till prices drop.
A 2x4x16 is normally $4.50 and the were up to $20.50 till recently, they're still $10.70 right now.

I think the most recent pic of inside I could find was when I was assembling the 4 post lift.