1. Photons Strike the Panel: Sunlight is made up of tiny particles called photons. These photons carry energy. When they strike the solar panel, they interact with the silicon atoms in the panel's photovoltaic cells.

2. Electrons Get Excited: The energy from the photons knocks electrons loose from their atoms within the silicon. These electrons are now free to move.

3. Electrons Flow: The solar panel is designed with a special structure, creating an electric field. This field forces the freed electrons to flow in a specific direction, creating an electric current.

4. Direct Current (DC) is Generated: The movement of these electrons generates direct current (DC) electricity.

5. Conversion to Usable Power:

* Grid-Tied Systems: In homes and businesses, an inverter converts the DC electricity to alternating current (AC), which is the type of electricity used in standard power outlets.

* Off-Grid Systems: Batteries can be used to store the DC electricity for later use or it can be used directly by DC appliances.

In Summary:

The process of sunlight hitting a solar panel is essentially converting light energy into electrical energy. It works by using the photoelectric effect, where photons of light liberate electrons within a semiconductor material, creating an electrical current. This current is then used to power homes, businesses, or other devices.