"This handy device allows you to destroy any excess items in your inventory and gain fuel for the generator in exchange."
Incinerator can be crafted by combining 10 metal, 2 hinges, 4 pipes, and 2 valves. Burning coal in the incinerator provides an alternative source of power other than petrol cans.
Beside coals, you can virtually burn any item before you get Recycler Plant to deal with junky items. Some items recommended for burning in Incinerator are coal, powder, wood, butter and soap, so considering spare them instead of taking for showering. In case of powder, it's much cheaper than gasoline and might not be used in early game. You may not want to burn gasoline in Incinerator as it only gives one hour of power, whereas it may fuel up a day in Generator. Items that Recycle Plant cannot deal with can be burned by Incinerator.
Instead of using graves, human corpses can be cremated in the incinerator, providing a cost-free method of disposing bodies in the shelter. Pet corpses can also be incinerated.
Incinerator has the maximum capacity of 99.0, building multiple incinerator does not have any effect.
Remember to disable the Generator while using Incinerator.