The Radioisotope Generator is a simple way to generate power from leftover items. It does this by harnessing the radioactivity from items. An example of this is illustrated below. The power generated depends on the amount of radiation, therefore also the stack size. It outputs power from both the bottom and the top of the machine. This means that you have to use two cables to harness all the power.
Depends on the radioactive item used, but max for Uranium 235 is 12.8 kW