What is solar energy?

solar energy, radiation from the Sun capable of producing heat, causing chemical reactions, or generating electricity. The total amount of solar energy incident on Earth is vastly in excess of the world’s current and anticipated energy requirements.

Why do people use solar energy?

People have used the sun's rays (solar radiation) for thousands of years for warmth and to dry meat, fruit, and grains. Over time, people developed technologies to collect solar energy for heat and to convert it into electricity. Radiant energy from the sun has powered life on earth for many millions of years.

What if I have a question about a solar project?

If you have a question about any project information, email [email protected]. Solar energy is the fastest growing and most affordable source of new electricity in America. As the cost of solar energy systems dropped significantly, more Americans and businesses are taking advantage of clean energy.

How is solar power generated?

Solar power is generated in two main ways: Solar photovoltaic (PV) uses electronic devices, also called solar cells, to convert sunlight directly into electricity. It is one of the fastest-growing renewable energy technologies and is playing an increasingly important role in the global energy transformation.

Why is solar energy classified as renewable?

Solar energy is classified as renewable because it is derived from the sun, which, for all practical purposes on Earth, is an inexhaustible source of energy. The sun has been producing energy for about 5 billion years through nuclear fusion reactions in its core, and it is expected to continue doing so for several billion more years.

How long has the Sun been a source of energy?

The sun has produced energy for billions of years and is the ultimate source for all of the energy sources and fuels that we use. People have used the sun's rays (solar radiation) for thousands of years for warmth and to dry meat, fruit, and grains.