The Oil Well will probably be your first power supply of over 500 energy each. It is equal to the Starfield Turbine. It is recommended to use 4 or more Oil Wells for one Primitive Oil Refinery.

WARNING: You must have at least 50 energy that is not currently being used to start up the machine/oil setup. Wait until the meter becomes 1/4 full (black bar) for it to be useful.