How do solar panels work?

Solar panels are made up of photovoltaic cells that convert energy from the sun into electricity.

Photovoltaic cells are placed between layers of semi-conducting materials, most commonly silicon. These layers have different electrical properties. When sunlight hits the cells, energy from the light causes electrons to move, creating an electric current. This process is known as the photovoltaic effect.

Solar panels produce direct current (DC) electricity. This electricity is then passed through an inverter, which converts it into alternating current (AC). AC electricity can be used in homes and businesses or sent back into the electricity grid.

A solar panel’s ability to generate electricity comes from the photovoltaic effect. In simple terms, solar panels convert light energy into electrical energy.

Solar cells are usually made from silicon, a semiconductor material. When sunlight strikes the panel, photons interact with the silicon atoms, releasing electrons. The movement of these electrons creates a flow of DC electricity.

When sunlight reaches your solar panels, the photovoltaic cells absorb energy from the sun’s rays. Solar panels work best in direct sunlight but can still generate electricity on cloudy days.

Inside each cell are layers of semiconductor material, usually silicon. When sunlight hits these layers, electrons are released and begin to move, creating a flow of DC electricity.

Most household appliances run on alternating current (AC), while solar panels produce DC electricity. An inverter converts the DC power into AC so it can be used throughout your home. There are different types of inverters, including string inverters, microinverters, and hybrid inverters.

Once converted to AC, electricity is sent to your home’s electrical panel to power appliances. If your solar system produces more electricity than your home uses, the excess may be stored in a solar battery or exported to the grid, depending on your system setup.

By generating your own electricity, you reduce the amount of power you need from the grid. This can lead to lower power bills, especially in areas that receive good sunlight.

Solar power is a renewable and low-emission energy source. Unlike fossil fuels, it does not produce greenhouse gases during electricity generation, helping reduce your household’s environmental impact.

Adding a solar battery allows excess electricity to be stored for later use, such as at night or during power outages. This can increase energy independence and reduce reliance on the electricity grid.