The sun converts - - - energy into - - - energy.

The sun converts fusion energy into radiant (electromagnetic) energy.

Explanation:

The energy which we get from the sun is called Solar Energy. The Solar Energy is nothing but, a form of energy, which is left out from an exothermic reaction. The radiant energy is the solar energy. The sun gets its energy through nuclear fusion.

High temperature causes the sun's nuclei to separate from electrons. And with these electrons, the hydrogen ions combine to form Helium, which is the source of energy for the sun. As the nuclear fusion continues, the energy is derived and we get solar energy.