How can we use sunlight to generate electricity?

And there is another way to use this abundant energy source: photovoltaic (photo = light, voltaic = electricity formed through chemical reaction) solar cells, which allow us to convert sunlight directly into electricity.

How do photovoltaic solar panels work?

Photovoltaic solar panels are much more common than those that utilize thermal conversion, so we’ll be focusing on PV solar panels. Sunlight strikes the solar cells of the solar panel. Some of the rays of light or photons pass through the outer layers of the cell and into the silicon core.

How is sunlight manifested in a photovoltaic system?

Sunlight is manifested in several ways including visible light, infrared radiation, and ultraviolet light. Visible light – This is the portion of the solar spectrum that we can see. It is an essential component in photovoltaic systems, which convert solar energy to electrical energy.

Are solar panels a viable option for domestic electricity production?

Solar panels are appearing on more and more rooftops around our suburbs as solar photovoltaics (PV) become an increasingly viable option for domestic electricity production. Photovoltaic solar cells, such as those in these rooftop panels, convert light directly to electricity. Image source: Marufish / Flickr. But how exactly does it work?

Do solar panels generate electricity at night?

Solar panels generate no electricity at night time. Solar panels can't store energy, so you have to use the electricity they generate when the sun is shining. You need batteries to store the energy generated. These are expensive. – Solar cells convert the light from the sun into electricity.

What are solar panels and how do they work?

Solar panels are devices that capture the energy that comes from solar radiation and transform it into electricity. They are often referred to as solar photovoltaic panels to distinguish them from solar collectors, which use solar energy thermally to produce domestic hot water.