Polycrystalline Silicon Solar Modules 72Cell-290W

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100000000 watt/month

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1. Structure of  Polycrystalline Silicon Solar Modules 72Cell-290W Description

Solar panel refers either to a photovoltaics (PV) module, a solar hot water panel, or to a set of solar photovoltaics modules electrically

connected and mounted on a supporting structure. A PV module is a packaged, connected assembly of solar cells. Solar panels can be

used as a component of a larger photovoltaic system to generate and supply electricity in commercial and residential applications.



2. Main Features of the  Polycrystalline Silicon Solar Modules 72Cell-290W


IEC 61215, IEC 61730, MCS, CE, ISO 9001:2008, ISO 14001:2004, BS OHSAS 18001:2007, PV Cycle, SA 8000


 3. Polycrystalline Silicon Solar Modules 72Cell-290W Images



4. Polycrystalline Silicon Solar Modules 72Cell-290W Specification


Electrical parameters at Standard Test Conditions (STC)窗体底端

Power output

P max



Power output tolerances

ΔP max


0 / + 5

Module effi ciency

η m



Voltage at Pmax

V mpp



Current at Pmax

I mpp



Open-circuit voltage

V oc



Short-circuit current

I sc




5. FAQ of Polycrystalline Silicon Solar Modules 72Cell-290W

Q1:Can we visit your factory?

A1:Sure,welcome at any time,seeing is believing.



Q2:Which payment terms can you accept?

A2:T/T,L/C,Moneygram,Paypal are available for us.



Q3:How to guarantee the Quality of the products

A3:We have established the international advanced Quality management systemevery link from raw material to final product we have strict

Quality testWe resolutely put an end to unQualified products flowing into the market. At the same time, we will provide necessary follow-up

 service assurance.


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Q:Solar Panel HELP?
The only way it pays off is if your energy supplier or state refunds half or more of the cost. Even then, could take 20 years or more to pay off depending on your electrical usage. Most people are either misguided or doing it to reduce their carbon footprint.
Q:are solar panels sufficient for electric heating?
A thermal solar panel to feed your water heater is the most efficient. But you need a classic heater system too when there is no or little sun. Solar panels to heat a home is not at all recommended. First of all, you get less day light and less sun in winter, so you won't get much electricity. They work best in summer, but electric panels have poor yields and are a very long term investment. You will need to wait years before saving money. Natural gas, a well isolated home, and a good old sweater is the best way to cut bills.
Q:Can pluto recieve energy from solar panels?
Two problems: ) solar flux. Around Earth, we receive solar energy to the tune of 370 W/m^2 (watts per square metre). In theory, if you have a solar panel of metre by one metre and place it (in space) directly perpendicular to the rays of the sun (meaning = the panel is facing the sun perfectly), you should get 370 watts of power. In practice, the panels are never 00% efficient so that you get less. The flux (just like the intensity of light) drops as the square of the distance increases. Pluto is -- on average -- 39 times further from the Sun, therefore the flux there will be reduced by a fraction of 39^2 = 52 times 370 / 57 = 0.9 W Even with 00% efficiency, you square metre panel will produce less than one watt, once you get it out to Pluto. 2) temperature It is very difficult to built a solar panel (with all the required wire connections) that remains flexible enough at Pluto's temperatures. Temperature drops as the 4th root of the flux (or, to make it easier, the square root of the distance). sqrt(39) = 6.25 Temperature at Pluto = Temperature at Earth / 6.25 (in degrees Kelvin -- also known as Absolute Temperature) At best, temperature around here is 300 K (it is less than that, but 300 makes the calculation easier) 300 / 6.25 = 48 48 K = -225 C = -373 F wires and insulation become very brittle at these temperatures... and one watt of power flowing through the wires will NEVER be enough to warm them up (never mind running the iPod).
Q:What is a solar panel?
Solar panel is a battery of solar cells. Solar cell is a device which uses the sun's rays to produce electricity by the photovoltaic effect. The photovoltaic effect involves the creation of a voltage (or a corresponding electric current) in a material upon exposure to electromagnetic radiation. It utilizes the generation of a voltage when radiant energy falls on the boundary between dissimilar substances (as two different semiconductors).
Q:harbor freight solar panels ?
Unless things have changed in the past few years, their panels are amorphous silicon, and sharply decline in output after 6 to 2 months. The panels have no STC (standard test condition) rating, so the 5-watt panel is really more like 5 watts. And the warranty is very short - 90 days, compared to the 25-year performance warranty of any serious crystalline silicon panel. But if you have a fun little project that does not have to last, Harbor Freight is a convenient source.
Q:Kwh and watt conversion-- solar panel cost?
I don't know how they calculate out the savings, but ask your local supplier. The expensive part of heating hot water is the initial starting of the warming of the cold water, but this is where solar panels come to play a very good role in preheating home hot water cylinders. Sometimes the water coming from the solar panels is hotter than what the hot-water cylinder thermostat is set for this is one way you save money Another equally expense of heating hot-water is when the element thermostat keeps the temperature up to the desired setting of the thermostat. Where as having a solar panel or two the hot water cylinder is only a storage container to store the hot water in! A great invention in my book! The initial costs are buying these units having them installed, but over time you will start saving money on your heating hot water costs, where you will be able to waste a bit of hot water and not worry about the costs going to waste or down the drain... I suppose you know all of this, but I'm sorry, I can't convert your conversion question, best ask the supplier to put everything in layman's terms so you can understand it better more clearly! Cheers!!
Q:Polycrystalline solar panels are good or single crystal solar energy is good
Pre-monocrystalline silicon solar cell photoelectric conversion efficiency of about 15%, the highest reached 24%, which is all types of solar cells in the photoelectric conversion efficiency of the highest, but the production cost is so large that it can not be a large number of extensive And commonly used.
Q:would the planet cool if covered in solar panels?
No, the top argument is that extra CO2 is inflicting the ambience to keep greater warmth from the sunlight. Having image voltaic panels might scale returned the quantity of CO2 interior the ambience we are putting in it real now via giving us an means source that doesn't emit CO2, and that's approximately it.
Q:Why can not the solar panel load directly?
Solar panels because of low power, and the output voltage is extremely unstable, not suitable for load.
Q:so i'm wanting to eventually get solar panels.?
Graminoids are among the most versatile life forms. They became widespread toward the end of the Cretaceous period, and fossilized dinosaur dung (coprolites) have been found containing phytoliths of a variety that include grasses that are related to modern rice and bamboo. Grasses have adapted to conditions in lush rain forests, dry deserts, cold mountains and even intertidal habitats, and are now the most widespread plant type; grass is a valuable source of food and energy for all sorts of wildlife and organics. Graminoids are the dominant vegetation in many habitats, including grassland, salt-marsh, reedswamp and steppes. They also occur as a smaller part of the vegetation in almost every other terrestrial habitat. There are some 3,500 species of graminoids. Many types of animals eat grass as their main source of food, and are called graminivores – these include cattle, sheep, horses, rabbits and many invertebrates, such as grasshoppers and the caterpillars of many brown butterflies. Grasses are also eaten by omnivorous or even occasionally by primarily carnivorous animals. In the study of ecological communities, herbaceous plants are divided into graminoids and forbs, which are herbaceous dicotyledons, mostly with broad leaves.

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