S
SibertSolar
Photon often have bench test result comparisons for modules, not always the most reliable source in terms of their test methods but might give you some side-by-side spec's to consider.
S
SibertSolar
Also, as has been said already, being a Chinese manufacturer does not automatically mean that corners are cut or that an inferior product is the default position. A good indicator to look out for, in terms of the "quality" of the manufacturer, is the presence of OHSAS18001 accreditation. This is a level of certification related to the manufacturer's investment in how they look after their workforce and how they manage their production environment (occupational health & safety basically) and it isn't cheap for the manufacturer to obtain or maintain.
A
Aquinas_Quark
C
cjapeterborough
The 2011 round robin results can still be seen on the link
PHOTON Yield 2011 pdf free ebook download from gcsolar.com.au
PHOTON Yield 2011 pdf free ebook download from gcsolar.com.au
E
Eco Deal
We have installed Sharp - Samsung - Sanyo - Trina - Perlight - yingli - suntech
Best build quailty
Sanyo
Samsung
yingli
Suntech
Trina
Sharp
Best on paper
Sanyo
Yingli
Samsung
Suntech
Sharp - Trina
Best ROI according to SAP
yingli
Sharp
trina
samsung
suntech
Sanyo
I would go for yingli 21p rate , sanyo forget them
Yingli 265 16% according to SMA sunny design will yeild 3600 kwh south facing
and 3000kwh east /west so at our install prices that would give a ROI of 14% at 21p
Although Samsung have kicked --- with solar edge over the last 12 mths
I'm interested to know how you came to those figures. Yingli and Samsung better on paper than Suntech? By what measure?
Presumably ROI according to SAP is based entirely on price of panel? You must be getting some good deals on Samsung and Yingli to be getting them in that order.
Last edited by a moderator:
F
finchy
Anyone used Jetion ? They have a 12 year product warranty, I feel with longer payback customers need the confidence of these warranties. They are priced around the same as Yingli..
V
Vegelen
I wouldnt agree with your solar photovoltaic ranking analysis above.
Yingli and Samsung are not preferable to the latest monocrystallines from Suntech.
Suntech are the largest solar panel manufacturer in the world and have economies of scale greater than Samsung.
Suntech Panels are made to higher quality standards than Samsungs overall.
Samsungs are ideal for installers wanting to maximise profit, at the expense of quality and warranty considerations.
Good for the installer, not necessarily for the consumer.
V
Vegelen
[h=1]Efficiency Leaders in Crystalline Silicon PV[/h]
Efficiency Leaders in Crystalline Silicon PV : Greentech Media
Efficiency Leaders in Crystalline Silicon PV : Greentech Media
These are serious allegations, and VERY interesting if true. What is your source of information please?
Losses on the ‘guaranteed’ Chinese panels approaching the level alleged would be an actionable violation of the Sale of Goods Act in the UK. ie ‘Not as described.’
Today I started a real test, at my house in Norfolk:
http://www.electriciansforums.net/p...ide-long-term-real-world-test.html#post471778
W
wstevew
My Suntech Mono's are again over monthly target, By 25% this month and still 3 days to go and will be 40% over by month end if I add total kWh divided by 26 * 3.
C
cjapeterborough
Looking at both tables of results the majority of the panels are all within +/- 3% of each other which in most cases is the manufacturing tolerances
If you look at the disclaimer at the bottom of the linked report it states:
Neither PTC nor STC account for all “real-world” losses. Actual solar systems will produce lower outputs due to soiling, shading, module mismatch, wire losses, inverter and transformer losses, shortfalls in actual nameplate ratings, panel degradation over time, and high-temperature losses for arrays mounted close to or integrated within a roofline. These loss factors can vary by season, geographic location, mounting technique, azimuth, and array tilt.
What all these tables show is a lack of cost per kw which is by far the biggest difference between the panels and not performance.
M
mark_
Vegelen,
Earlier you wrote about performance in cloudier or clearer days, where did you find that sort of information.
Could anyone explain or point me in the direction of some literature which explains what details provided by the manufacturer are key. For example when comparing two panels which are the most important factors to look at (eg peak efficiency etc).
Sorry im a bit late on this thread but I like the original poster would like to know more on panel selection.
Earlier you wrote about performance in cloudier or clearer days, where did you find that sort of information.
Could anyone explain or point me in the direction of some literature which explains what details provided by the manufacturer are key. For example when comparing two panels which are the most important factors to look at (eg peak efficiency etc).
Sorry im a bit late on this thread but I like the original poster would like to know more on panel selection.
S
sedgy34
D
danesol
Best in what context ..................
Best in efficiency ??
Best in High temperatures ?
Best as they marry up with particular Inverters ?
Best as they produce the highest voltages ?
Best in Cloudy or Sunny Clear days ?
Best for the amount of roof space you have ?
Best for your chosen ROI ?
So - Yes you could look at specific specifications like generation per sq mtr and how efficient they are, but if NOT married with a suitable efficient Inverter, they could turnout not quiet as effective as you thought - IMO, its all about system design for each particular customer's requirements & their particular environment ( which in most cases you can do s0d all about ! ) and about the experience & knowledge of an Installer who has learnt up & above the components specs to deliver the best system for each individual customer
F
FB.
Sorry I've only just seen this.
I was not saying that Chinese panels are inferior in perofrmance or durability.
I was making the point that an installation with Chinese panels could underperform and degrade faster than top-of-the-range panels, yet still give a very respectable payback.
My Chinese panels look to be on track to outperform SAP by 15% or so - so about 3400kWh per year.
In my area, Sanyo installations of similar facing and size are generating about 10% more than mine. Let's call it 3800kWh per year.
I would have had to pay £12000 for Sanyo, to achieve annual generation of 3800kWh. That's £3.16 of cost for every kWh generated.
I paid £9000 for Chinese and look to be on course for 3400kWh. That's £2.65 of cost for every kWh generated.
So, at the moment, it looks as if my Chinese panels give about 20% more output for every £ spent compared to Sanyo.
So just because they aren't as good, doesn't mean that a lower price hasn't fully discounted it.
F
FB.
Just as important as the panels, is having a system which is well-planned and well-installed. Irrespective of price; a well-planned/installed system with Sharp, Suntech or Kinve panels could far outperform a poorly-planned system with Sanyo panels, even though Sanyo panels are generally superior.
So don't just base a decision on the panels; base it on well-matched parts and an installer who knows what they're doing.
M
mark_
FB, I totally agree with you that panel are not the be all and end all of a system. I am just starting looking into PV systems and started with the types of panels. I will also be looking at different types of invertor and how they vary.
You wrote above:- "Best in Cloudy or Sunny Clear days ?"
Where would you find such information?
You wrote above:- "Best in Cloudy or Sunny Clear days ?"
Where would you find such information?
V
Vegelen
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