What are solar panels?

Solar panels are items that produce solar energy and convert it into usable electricity. They usually come in a square or rectangular shape and contain 'solar cells'.

Why are solar panels important?

Solar panels are the most important part of a solar power system since they produce the electricity that eventually finds it’s way to your laptop, lights and television. In this basic introduction, we look at how this happens. How do solar panels work? Solar panels convert sunlight into electricity through a process called the photovoltaic effect.

What are the two main types of solar panels?

There are two main types of solar panels: polycrystalline and monocrystalline. Before discussing the details of these two panels, it's essential to learn about crystalline silicon first.

How efficient are solar panels?

Efficiency is a measure of how much of the sun’s potential energy a panel will convert into solar power. Most panels have an efficiency rating of between 15-23%. You shouldn’t worry too much about panel efficiency. High-efficiency panels only matter where you have a small space to work with. They do however cost more.

How many solar cells are in a solar panel?

A panel comprises 60-72 solar cells. Solar cells create electricity when exposed to light. Each cell produces about 3 volts of power. 90% of solar cells are made from silicon. Silicon absorbs light and can conduct electricity. Solar panels on a roof (Image by Stefano from Pixabay)

Do solar panels really matter?

Don’t sweat too much about panel efficiency. The only real benefit to more efficient panels is that they fit more solar in less space. High-efficiency panels matter if you’re trying to build in a tight space, but there’s nothing wrong with building a larger array with less efficient panels.