Fuel is essential to keep generators running.

To acquire fuel, a player can buy it from construction traders or steal it from various places, additionally it can sometimes be found in ruined buildings.

The above means of acquiring fuel can be substituted by researching Biofuel, and building Biofuel Distilleries, which can convert Greenfruit, Wheatstraw, and Hemp into Fuel, providing a free and reliable source, though somewhat more labor intensive and time consuming.