Photovoltaic System Saves You Money
A photovoltaic system (PV System) utilizes solar energy from
the sun for home/business use.
designs are very versatile, allowing a great deal of creativity and
They allow freedom from
utility bills, and put you in charge of your energy needs.
There are also many other financial
incentives to going solar:
Feed – in tariffs allow you to get discounted or
even free solar panels
You can sell your surplus electricity back to the
power company (only in grid tie systems)
After the upfront cost of the solar panels and
installation, the PV system pays for itself
Ground Mounted Photovoltaic System
Free Solar Panels Via the Feed-in Tarrif
PV panels are the devices that collect the solar
They can be mounted on your
roof, or placed on the ground using ground mounts.
Consider these PV panel facts:
PV panels use photons from the sun to create
A PV panel is a collection of photovoltaic cells
that are wired together
They typically generate between 100 to 320 watts
Solar panels use wafer-based crystalline silicon
cells or thin-film cells based on cadmium telluride or silicon
A PV array is a linked collection
of PV panels.
The purpose is of course
to generate more power, since one solar panel is probably not going to be
enough to power the typical house hold or business.
Most use an inverter to convert the power
into usable electricity for your home or business.
Few more facts about PV arrays:
The panels are connected in a series to obtain
desired voltage, and then the individual wires are then connected in parallel
to allow the system to produce more current.
The panels are measured under STC (standard test
conditions) or PTC (PVUSA test conditions) in watts.
Panels normally measure between 100 to 400 watts
Photovoltaic System Mounting
Mounting on roofs Facts
Photovoltaic Arrays are most commonly mounted on
Mounted with a few inches gap and parallel to
the surface of the roof
If your roof is horizontal, the PV array can be
mounted with each solar panel aligned at an angle
If your roof cannot handle the added weight, it
will have to be strengthened, or you can convert to composition shingles
Composition shingles compensate for the extra
weight of the PV array
Mounting as a shade structure
If you want to get a little
creative, using photovoltaic system panels in the place of patio covers is a great idea.
Here are a few things to consider if you
choose to take this fun and creative path to solar power:
PV wiring may be concealed to maintain the
aesthetics of the shading structure
Vines should be avoided because they will
interfere with the wiring
panels are mounted at an angle that is steeper than normal patio covers
(BIPV) are PV materials that are used to replace standard materials
for parts like the roof, skylights, or facades.
BIPV is the one of the fastest growing areas within the solar power
They are being used in many
new buildings across the planet as a main source of electricity.
Here are some serious advantages to using
Initial cost of construction materials is
Building Applied Photovoltaics
Building-applied photovoltaics (BAPV) is the process of
retrofitting an existing building with PV materials that replace the roof,
skylights, or facades.
that use solar energy in this way are using BAPV.
A solar tracker is a device that orients PV
panels toward the sun
In flat-panel photovoltaic (PV) applications,
trackers are used to minimize the angle of incidence between the incoming
sunlight and a photovoltaic panel
Tracking systems are found in all concentrator
applications because such systems do not produce energy unless pointed at the
A solar inverter converts the
variable direct current (DC) output of a solar panel into a
utility frequency alternating current (AC) that can be fed into a commercial
electrical grid or used by a local, off-grid electrical network.
It is a
critical component in a photovoltaic system
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