With winter fast approaching, consider saving energy through
the use of solar technology. Heating needs for the average American
home will generally account for half of its entire energy expenses.
Even taking advantage of just a few solar appliances is certain to alleviate
some of that burden.
SolarHome.org is happy to help by providing a wide range
of products and information related to solar and renewable technology.
Please browse our store and learning center to discover how these options
can work for you.
Sunlight is an abundant resource which, when harnessed
by PV systems, is a great tool for offsetting energy consumption. Solar
panels transform sunlight into usable forms of energy for on- or
off-grid applications. Wired together in modular array systems, solar
panels allow custom, expandable design to meet a variety of energy demands,
from powering a remote pump to lighting an urban home.
Solar panel manufacturing technology
In crystalline silicon solar
cells, the orderly arrangement of atoms results in the efficient
conversion of sunlight to electricity. A typical crystalline silicon
solar panel consists of a transparent glass surface, an ethyl vinyl
acetate (EVA) encapsulant, a Tedlar rear layer, and an aluminum outer
frame.
Thin-film deposition is easier
and less expensive than crystalline silicon-ingot growth techniques
because it uses less semiconductor material. The three principal thin-film
technologies are amorphous silicon (a-Si), cadmium telluride (CdTe)
and copper indium gallium diselenide (CIGS). These processes produce
high-efficiency modules that can be built directly into roofing shingles
for aesthetic architectural considerations.
Effective string-ribbon
manufacturing combines conventional crystalline silicon and emerging
thin film technology. The high-temperature, molten process contributes
to a double yield over conventional solar panel construction per pound
of silicon for high material efficiency.
Photovoltaic (PV) systems
In addition to solar panels, a photovoltaic (PV) system requires
a mounting structure to tilt panels toward the sun, an inverter to convert
panel-generated direct current (DC) into appliance-friendly alternating
current (AC), battery storage to compensate for unfavorable weather
conditions, and a charge controller to regulate battery operation.
Grid-tie systems
are interconnected to the utility network. Wired with a synchronizing
inverter, grid-tie systems feed surplus electricity back into the local
utility. The utility acts as an infinite storage system, eliminating
the need for batteries. Grid-tie systems are aligned with many government-sponsored
incentives.
Off-grid systems are stand-alone systems designed for
RV, cabin, remote, backup and portable
power applications. Because they do not rely on the electrical grid,
off-grid systems require batteries
to offset lesser power production due to prolonged periods of inclement
weather.
In hybrid off-grid systems, a gasoline, propane or diesel
generator compensates for solar power production that is insufficient
for energy demands. Add solar panels as your budget allows, reducing
generator run time.
Even with the significant initial cost of solar power
systems, the renewable nature of PV technology, low system maintenance,
and numerous tax incentives make solar panel systems an attractive investment
for powering homes and businesses.