Hi this is Mark from M Solar Power with another quick solar update and today I'd like to take you
through the benefit of double glass or glass on glass solar panels compared to traditional
laminated or plastic back sheet server valance to understand the benefit of double glass solar
paths we first need to look at how a traditional solar panel is made so the traditional solar cell
or also the cells are incredibly brittle and if you touch them with your hand there best pool will
crumble in your hand and to strengthen them what solar panel manufacturers do is they laminate the
solar cell the way that you traditionally laminate a piece of paper to strengthen it and what they
then do is take the laminate and stretch it over an aluminum frame to create a rigid rigidity and
cover it with a layer of glass to protect it the weakness of a traditional server panel firstly
comes from the laminate back sheet itself the portion of the solar panel that's the plastic
back sheet to here we can see a new solar panel with a lemonade his school in good condition and
if we have a look at this example here from my garden you can see the lemonade going brown or
aging the fancy term for this in the solar panel industry is called soiling and the soiling can
age the solar panel up to four and a half percent in the first year the second problem comes from
the back of the solar panel and this is called illumination so we're just going to cut and flip
the panel around and I'll show you what I mean so if we have a look at the back sheet of this
panel we can see the first signs of back she'd illumination and that is just a fancy word for
the actually separating away from the solar cell on the front and if you have a look closer at
this panel you can see the ridges here against the bus bars where it's dilemma nating and you can see
the actual back seat itself here bubbling once it bubbles and it basically pops and if it's moisture
that in grace's into the solar panel we're going to have a massive amount of degradation the second
problem is is that we have current hair of up to a thousand five hundred faults where we string
multiple solar panels together and no volts on the frame and the current wants to take the
shortest route and jump across the frame rather than go all the way down from the roof through
the inverter and Bekah and when it does that it eats away the actual frame itself and the fancy
term for that is in a crisis or in solar panel terms it's called PID or potential and induced
difference and what that refers to is the frame being eaten away as well as the hardpoints the
connections that are attached to the solar panel as well as the hardpoints in the roof
and any specific place down as we go downstairs anyway there's a hard joint the electrolysis will
eat those points first the second thing that it does is it eats away the micro connections inside
the solar cell and that is the second reason why traditional panels have a high rate of degradation
so if we have a look here on the solar panel for my garden you can see the results of necrosis or
attention in these difference if you have a look down the frame here of the backside of panel you
can see everywhere that the solar panel has been eating itself away and to fix that what solar
panel manufacturers they have produced blasts on glass or double glass server panels and a double
glass of a panel is exactly what the word says a double glass server panel refers to it being
glass on the front and glass on the rear and what this does is right away gets rid of the
traditional laminated or plastic back sheet and solves all of the problems that we are seeing
on this panel with regards to dilemma nation and discovering of the solar panel the second thing
that it does is it gets rid of the frame and by getting rid of the frame we get rid of all of the
electrolysis that you will find on a traditional frame solar panel and underneath the traditional
solar panel on the earth cloaks and the junction points onto the roof the other major benefit of
glass services that manufacturers are putting all the latest technology into dull glass solar
panels and what we have in this server panel itself compared to traditional party or 100 so
about is we have a much more efficient solar cell the solar cells in this example that I have in my
hand are perc mono so perc standing for passive emitter rear side contact the rear side contact
refers to the fact that the solar panel not only collects light directly from the front but high
frequency light passes through the cell and is collected on the rear side what this does is it
greatly improves panel efficiency the second that you'll see is you started to have many more buzz
bars these little lines running down the solar cell are referred to as buzz bars I just like
to refer to them as free weights from the liquor jung-hwan and possible freely through the server
panel and the wall West bars your solar panel has the more efficient it will be another huge
innovation within glass glass solar palaces as the panel is transparent we now have a second
solar panel on the rear the solar cell on the rear is or say a perk cell so it is receiving
the light through the solar panel and actually which helps activate the rear cell through the
rear sight contact and all of these advantages together mean that we need less solar panels to
produce more power and they last much longer a traditional solar panel has a 25 year warranty
with a high level of soiling or panel degradation this means that as the years pass you'll see the
panels on that make a lot less power a lot quicker with double glass overpass they offer a 30 year
warranty meaning that they will produce power for longer at a slower rate of decay so just to recap
they double glass solar panels offer us the lowest level eyes cost of energy producing more power per
square meter as they are much more efficient to be plus 20% at the moment we need less of them and
associated aluminum clamps below the materials and labor and as they are fishing they produce
more power for longer so thanks for tuning in and I wish you many happy years of well sun!