Nuclear Power in Ukraine, Ukrainian nuclear energy. Ukraine is heavily dependent on nuclear energy - it has 15 reactors generating about half of its electricity. Reactors at Khmelnitski-1 Khmelnitski-2 Rovno-1 Rovno-2 Rovno-3 Rovno-4 South Ukraine-1 South Ukraine-2 South Ukraine-3, Zaporozhe-1, Zaporozhe-2, Zaporozhe-3, Zaporozhe-4, Zaporozhe-5, Zaporozhe-6.