How do solar panels create electricity?

But if you want to explore how solar panels create electricity a bit more, we'll explain what you should know. Solar cells are typically made from a material called silicon, which generates electricity through a process known as the photovoltaic effect.

How does photovoltaic (PV) technology work?

Learn the basics of how photovoltaic (PV) technology works with these resources from the DOE Solar Energy Technologies Office. Solar photovoltaic modules are where the electricity gets generated, but are only one of the many parts in a complete photovoltaic (PV) system.

What is a photovoltaic (PV) cell?

A photovoltaic (PV) cell, commonly called a solar cell, is a nonmechanical device that converts sunlight directly into electricity. Some PV cells can convert artificial light into electricity. Sunlight is composed of photons, or particles of solar energy.

How do solar panels convert light into electricity?

Solar panels convert the energy of photons (light particles) into electricity (as we discuss in The Beginner’s Guide to Solar Energy). This process is called the photovoltaic effect. When a photon hits a photovoltaic (PV) device, its energy is transferred from the photon to the local electrons in the material.

How does the photovoltaic effect occur?

The photovoltaic effect occurs when photons from the sun’s rays hit the semiconductive material (typically silicon) in the cell of the solar module. The photons activate electrons, causing them to free themselves from the semiconductive material. Photons hit the solar panel causing electrons to be freed during the photovoltaic effect.

Do solar panels generate electricity during the day?

Solar panels require sunlight to generate electricity, so they do not generate electricity during the day. However, home solar systems typically generate excess electricity during the day, which can be stored in batteries or sent to the local grid in exchange for net metering credits.