describes things related to the sun.

Solar is the source of nearly all energy on the earth, humans like all other animals and plants rely on the sun for warmth and food. In fact, more energy from the sun reaches our planet in one hour than it is used by the whole world in one year, approximately 120,000 terawatts (TW) hits the earth’s surface each day. Over the course of a year, the world uses a mere 15 TW of energy.