Nuclear Power
Nuclear Energy, Atomic Power, Atomic Energy
noun, の adjective
The power of the atom (原子) is nuclear power.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
私は原子力の利用には反対です。
I am against the use of nuclear energy.
私の父は、以前は原子力発電所で仕事をしていました。
My dad used to work at a nuclear power plant.
コウイチはゴジラと戦うために、原子力で動くワニカニロボットを作った。
Koichi built a nuclear-powered WaniKani robot to fight Godzilla.