46+ Oni Natural Gas Generator Setup US. Converts natural gas into electrical power. Immunity did take a hit on one of the dupes (ren) but after some rest in the base and use.
That makes them very useful in emergency situations.
Produces carbon dioxide and polluted water. The video shows the setup, starting, and adjusting of the generator. I came to the following schematics and was going to add valves to optimize the flow of gas and liquids. Produces carbon dioxide and polluted water.