Years ago friends lived on a farm that was totally plumbed for carbide gas lights. The gas generator was set into the lawn at ground level, well away from the house. all outbuildings including the barn hayloft had open gas lights.(questionable wisdom with that hayloft installation, but the barn still stood ??.
The system was not un use any longer as my friends used kerosene lighting as long as they rented the farm.
I wonder if this system could be used in freezing weather of our ND winters. I dont know how they might keep the water drip / pressure regulator system workingin below freezing temps ??
I still have a half can of Cal-carbide I bought at the local blacksmiths sale, maybe 40 years ago.
1 inch below the white surface is good active black Cal-carbide. :)