Solar Power Panels

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The Nuts and Bolts of Today`s Solar Panel Panels

Have you finished any do-it-yourself (DIY) projects lately? We often complete these projects without having a full understanding of how the contraptions that we build—work. Understanding the basic function of the various pieces in such projects makes the project more meaningful. And since we`ve taken the time and effort to complete the project, it doesn`t hurt to know exactly what we`re creating or installing, right?

It`s also true when we build and install solar power panels. With energy costs soaring as the supplies of the Earth's gas, oil, and coal dwindle, it simply makes sense to use energy sources such as the sun, wind, and water. These sources are clean, abundant, and reusable. What more could you ask for in an energy source, right?

Okay, let`s get down to the nitty-gritty of solar power panels. How do they function? Solar panels are the essence of solar power contraptions. And within the panels are the key to transforming sunlight into electricity: solar cells. Basically, these are semiconductor diodes. To put it into plain English, semiconductors are substances that conduct electricity better once we heat them. And diodes are one-way valves for electrons. It`s the “photovoltaic effect” that transforms light into electrical current—thus powering your solar panels

The most common type of solar cells in solar panels is silicon solar cells. While these types of cells are popular, it`s important to note that they`re also not very efficient. While this is due to several different factors, such factors are really too technical for this basic discussion of solar panels.

The next important concept in understanding solar panels is how the individual solar cells work in the solar panel. Groups of connected solar cells form photovoltaic arrays. And groups of these arrays form a single photovoltaic module.

On a more detailed level, how do the individual solar cells in the solar panel transform sunlight into electricity? Light consists of tiny particles of energy that are known as “photons.” The sun emits these photos via sunlight, which hit the solar cells in your solar power panels. As each photon hits the semiconductor in the cells (usually silicon), the silicon atom becomes ionized by moving its energy to the outermost electron. The energy created in the releasing of the electron produces electric current that you can use in your home.

It`s important to note how solar power panels function throughout the day. In particular, the conversion of sunlight into electricity slows down or stops completely when less sunlight reaches the panels. That could happen when a cloud blocks the sun or while the sun is setting. You may be wondering how the system of solar panels function at nighttime when the sun`s not out. Solar power systems include some sort of method for storing energy for nighttime, and typically get the energy from sources that are alternatives to daytime solar cells--such as batteries.

Earth4Energy is a resource that includes all of the information you need to know about how to build and install solar power panels on or nearby your home.

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