|Fri Sep 26, 2014||Total posts : 1
| Topic: Company and Cost of Solar panels for 3 storey building
What are the points to check while purchasing Solar panels which brands do you recommend.
|Mon Sep 29, 2014||Post #1|
|S L Gupta (Civil Engg)|
Join date: Mar 2008
Length of manufacturer’s warranty
Take note of what guarantees the manufacturer offers. If the
manufacturer is reputable and the warranty period on the panels is
substantial (at least 25 years) you would naturally expect your solar
system to last long for a long time, long enough to pay for itself and
make you a profit. However, for a warranty to be honoured, the
manufacturer needs to be still operating; so be cautious of brands
without a track record in Australia.
Have realistic price expectations
If you are paying substantially less than many other similar size
systems quoted, you may find poor quality equipment and/or poor
installation work. Quality equipment and installation isn’t cheap and,
like all other purchases, you often get what you pay for. Compare
components and warranty periods and check into the company providing the
installation. While large, well established companies can pass on
substantial savings due to increased buying power, other companies often
reduce costs by cutting important corners.
Solar panel certifications
This applies to all solar panel purchases, but especially to the purchases that could attract a government rebate.
The certification on solar panels indicates the type of testing that
has been done on them. For instance, TUV IEC 61215 confirms that the
solar panels have been tested by an independent laboratory and have met
their advertised specifications. Other certification types are
often self-assessed, therefore rely on the company being honest in what
Decide on the type of panels
It used to be the case that if you had limited roof space you
would need highly efficient (and very expensive) mono-crystalline solar
panels. This is rapidly changing with advances in polycrystalline panel
technology and some thin film technologies. Still, even if you have
ample roof space you may still want to consider panel sizes vs. output
as filling up your roof with inefficient panels will affect your ability
to add more panels at a later date, and does not maximise the power
output of the space.
It’s also important to bear in mind that regardless of claim, no
solar panel technology will produce a significant amount of power in
full shade. Learn more about monocrystalline vs. thin film panels.
Solar panel mounting
Make sure that the roof, ground mounting or tracking system is
engineer certified for the area you are in. For example, if you live in a
cyclone prone area make sure the mounting system and mounting brackets
are also cyclone rated. Quality systems are wind certified; after all
you do not want your system to take off during a wild storm . The
mounting system is a very vital component and some suppliers skimp on
this item. Make sure you ask about wind certification, warranty
arrangements and get copies of relevant documents.
Solar inverter efficiency
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