Key Information About PV Solar Power

PV solar power is completely different from other types. Of the 2 major categories of solar energy, active and passive, PV solar power is active. Let's look at it.

Solar Panel

Active solar energy relies on solar panels. You could imagine them as flat, rectangular boxes on rooftops.

You will find two main types of solar panel. From a distance, both appear to be rectangular boxes. Both convert rays from the sun into energy, but in two totally different ways. The terms for the two solar panel kinds are actually solar thermal collector as well as photovoltaic module.

1. Solar thermal collector: This solar panel takes in solar power from the sun and utilizes it to heat air or water.

2. Photovoltaic module: This second kind of solar panel collects solar energy and converts it to usable electrical power.

Meet the PV

To respond to the question, what's PV solar energy, we must know what the PV is. The quick answer is that PV refers to a photovoltaic module. "P" is actually for photo and "V" for voltaic.

In simple terms, "photo" pertains to sunshine and "voltaic" pertains to electrical power. PV panels convert sunlight into electric energy. Sunlight flows into the solar panel. Electric energy flows out of the solar panel.

A PV solar panel is actually made up of lots of photovoltaic (light to volts) cells. These specific cells are electrically linked, and then covered with glass. The glass supplies electrical insulation. It is also good protection from weather conditions and other destructive forces.

When minimal power is required, similar to that necessary to power a smaller appliance, a single PV solar panel is sufficient. When much more power is required, an "array" of solar panels is built by attaching panels to one another. If the power won't be supplied to the power grid, the solar panel(s) is linked to a charge controller, and battery. If it is intended for on-grid use, the solar panel array would be connected to an electrical inverter.

What Is PV Solar Energy?

Standard silicon solar panels transform roughly 14 to 17 percent of daylight into usable electricity. That isn't much. Late in 2006, though, a new photo voltaic cell was released. Solar panels that make use of the brand new cell can transform into electricity 22 percent of the daylight they collect. Theoretically, the most that the cells of a solar panel could convert is claimed to be about 26 to 27 percent of incoming sunlight.

How does it actually work? Let's look at a very simple explanation.

Every photovoltaic cell in a PV photo voltaic panel is a semiconductor. When sunshine hits these cells, a specific part of the sunlight is absorbed by those silicon cells. The cells absorb that part of the sunlight's energy. The cells then transfer the absorbed daylight's energy to the electrons within the silicon. The electrons start to circulate, and this generates an electrical current. Steel contacts built into the top and bottom of the PV cells draw off that current and it is dispatched to the grid or battery. It is now usable electrical energy. The power grid sends it on its way, in case you have used an on-grid connection. In case you are using a battery, it's stored within the battery awaiting your need.

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