You might be surprised to learn that it’s actually quite simple. Solar panels are made up of photovoltaic cells, which are specially designed pieces of material that convert sunlight into electricity.
When sunlight hits the cells, photons (particles of light) are
absorbed by the cells and interact with electrons in the material. This causes
the electrons to be freed from their atoms and create an electrical current.
This electrical current is then directed out of the solar panel and can be used
to power your home or business.
The Solar Cell and Semiconductor Materials: Silicon, Cadmium
Telluride, Copper Indium Gallium Selenide
It's not sunbeams and rainbows that power your home—it’s solar cells.
Here’s the science behind what makes them work. Solar cells capture the energy
of the sun in two main ways—through semiconductor materials and photovoltaic
(PV) materials.
Semiconductor materials are made from silicon, cadmium telluride, and
copper indium gallium selenide (CIGS). As sunlight hits a solar cell made from
one of these materials, electrons inside the cell become energized and jump out
of their orbit. This process creates an electric current—similar to how
electricity is generated in a power plant.
These free-flowing electrons then move on to PV material made up of
electrical conductors, which separates the electron's negative charges from
their positive ones. Their next stop is an inverter, which converts
direct-current electricity into alternating-current electricity that we can use
in our homes and businesses.
And there you have it—this is the basics of how solar energy works for
us!
Measuring Solar Panel Efficiency and Power Output
Solar panel efficiency and power output are two important factors to
consider when installing
and setting up a solar panel system. Knowing how much electricity is
generated from the solar panel is key to realizing the cost savings you can get
from installing one.
Measuring Solar Panel Efficiency
Efficiency measures how effectively a solar cell converts sunlight
into electricity—the higher the efficiency, the more power you can get from a
given amount of sunlight. Solar panels come with an efficiency rating that lets
you know just how much power it will generate under ideal conditions.
Measuring Power Output
Power output is the rate of energy production by solar cells,
typically measured in watts, and tied directly to efficiency. You can measure
this by connecting a wattmeter to the output of your solar cell system.
This will allow you to monitor how well your system is performing and
make sure that it's generating as much energy as possible.
By understanding both efficiency and power output, you can optimize
your solar panel setup for maximum energy production—and save money on your
electric bill!
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