The SI unit of energy is:

Explanation

The Joule is the SI unit of energy and is defined as the amount of work done when a force of one Newton acts on a point that moves one meter in the direction of the force. Mathematically, 1J=1N⋅m. The Joule is a fundamental unit in the International System of Units (SI) and is widely used to measure various forms of energy, including mechanical, thermal, and electromagnetic energy.