Favorites Compare 20W Round Monocrystalline Silicon Solar Panel

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10000000000000 watt/month

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Place of Origin:
Guangdong China (Mainland)
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Model Number:
Monocrystalline Silicon
Number of Cells:
Max. Power:
solar panel
5 years

Packaging & Delivery

Packaging Detail:standard export package for solar panel
Delivery Detail:7-15 days for solar panel


solar panel
High Efficiency
25 years Warranty
High-transmissivity low-iron tempered glass

Solar Panel



1,High and stable conversion efficienly based on over 4 years professional experience

2 ,High reliability with guaranteed +/-10% output power tolerance

3,Proven materials,tempered front glass,and a sturdy anodized aluminum frame allow modules to operate reliably in multiple mountily configurations

4,Combination of high efficicncy and attractive appearance

Quality and Safety

1,25 year 80%,10 year 90% power warranty 3 year power warranty

2,ISO9001:2000 (Quality Management system) certified factory

3,Product Quality warranty & products Liability Insurance to guarantee and user' benefits

4,Certifications TUV Intercert, CE Temperature Coefficients

Module Type100w150w200w250w300w
Maximum Power at ST(Pmax)W100wp150wp200wp250wp300wp
Maximum Power Voltage(Vmp)V36/1836/1836/1830.8v36/18
Maximum Power Current(Imp)A2.77/5.554.16/8.335.55/11.18.11A8.33/16.66
Open Circuit Voltage(Voc)V39.5/19.0539.3/19.439.6/19.536.2V39.6/19.8
Short Circuit Current(Isc)A3.04/6.094.58/9.166.1/12.28.7A9.16/18.33
Cell Efficiency(%)18.60%18.10%18.60%17.80%18.10%
Module Efficiency(%)17.70%17.20%17.70%17.10%17.20%
Operating Temperature°C-40°C to +85°C-40°C to +85°C-40°C to +85°C-40°C to +85°C-40°C to +85°C
Maximum system voltage1000V(IEC)DC1000V(IEC)DC1000V(IEC)DC1000V(IEC)DC1000V(IEC)DC
Power tolerance-0.03-0.03-0.03-0.03-0.03
Temperature coefficients of Pmax-0.45%/°C-0.45%/°C-0.45%/°C-0.45%/°C-0.45%/°C
Temperature coefficients of Voc-0.27%/°C-0.27%/°C-0.27%/°C-0.27%/°C-0.27%/°C
Temperature coefficients of Isc0.05%/°C0.05%/°C0.05%/°C0.05%/°C0.05%/°C
Number of cell(pcs)4*9  4*9  6*106*126*12
Dimensions(mm)1194*534*35/30 1580*808*50/351471*670*40/35 1640*992*502000*1050*50

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Q:Can you make a solar panel shift sideways?
having solar panels move like that on a mobile platform is inadvisable -- especially if there is a dynamic wind load resulting from the motion of the mobile platform. Even having a tilt mechanism is dubious at best. think of what limited marginal gain would be gained by mounting a small solar panel on the moon roof of a car. (ultimately, the best answer is to turn the car so that it's angle to the sun is optimal -- but the road/travel direction constraints are what ultimately prohibit that.) while there are ways to build sliding panels, the weight constraints would interfere with your weight/thrust ratios to the point of futility. if you really need that panel somewhere else, don't slide it out of the way, just buy another panel and mount it there. it's more expensive, but it's actually the cheapest solution in terms of design on a mobile platform.
Q:Can you tie small-scale solar panel system into household electrical system?
You can't directly connect solar panel into household electrical system,you need to convert DC power to AC power more over it will cost more amount...
Q:Is anyone using small solar panels in their home with any practical results?
I have an active solar heater on my roof. During the winter it comes in handy and heats the house, though we still need to use a gas heater to get the temperature up to a comfortable level.
Q:how many 45 watt solar panels would I need?
Ok lets start with basics We need 28watts for the lights but due to efficacy we wont get that from the solar panels unless we increase the power.So I would say about 50watts of panels and that depends on if its sunny if its cloudy we wont get even 70 watts so I would say get 200watts of panels to overcome this problem. Then we need to run the lights for 6 hours so we need power to charge the battery I would say we will need 2x 0ah deep cycle battery's and as we need the lights on for 6 hours I would say we will need a charging capacity or total power from our solar panels to be around 300watts. So now that's the power sorted we need a device to allow us to power the lights at the right voltage. You will need a device that is called a inverter if the lights run on 240/0volts you will need a 2v to 240 or 0 depending on were you are so we can now convert are 2v dc power into 0/240 for the t8 lights. You will need a 500watt inverter as when fluorescent lights start they have a surge of power needed to start them So you will need 2x0ah deep cycle battery's 7x 45watt solar panels or you could just get 3x 00watt panels x500watt pure sine wave inverter I know it will be costly but it will be worth it in the long run.I did a similar project myself and it cost me over 600
Q:how many solar panels will i need?
you silly ! with Solar there is always room for error . you have to build it in to your numbers . solar is full of errors . So you should plan on producing at 3 times what you expect you will need . then you have enough .
Q:How do Solar Panels work?
Light consists of small packets of energy called photons. When photons with sufficient energy strike the photocell its energy is converted into electrical energy which is stored in the batteries as dc voltage. To run a TV an invertor is used which converts dc to ac. Now you can make a block diagram of it and present it TC
Q:Im a bit confused about what a solar panel is?
As Aviophage says, there is plenty of info around. Solar panels produce electrical energy from the sunlight's energy. The sun puts out around 00W per square meter, and the panels are up to 20% efficient at converting this. If you are looking for a Grid Connected power system, they are usually made up of 24V modules about 50W each. The full voltage produced is then around 50V to 500V DC depending on the sun etc. They are connected to a specialised grid connect or grid interactive inverter (look up Sunny Boy for an example) which converts this to mains power for use around the house, while any remainder is exported to the supply network. The supply company may buy this at premium rates, and governments may provide subsidies to approved installations. There may also be carbon credit certificates when you buy a system. Not all places allow such things to be connected to the grid, but this market is rapidly changing. The links below should get you started.
Q:South facing solar panels?
You want the panels facing south because that is where they would get the most sunlight throughout the day. If your front door is facing north, then the back of your house would be facing south, right? So put them up in the back where they are facing south...haha wtf..
Q:Chem question regarding using solar panels ....?
It is not that simple. There are 3 main types of solar cells. Monocrystalline silicon is the most efficient and produces the smallest solar cells, and therefore the smallest panels. Poly-crystalline (or multi-crystalline) silicon produces the next most efficient type of cells and are a popular choice. Amorphous (or thin-film) silicon uses the least amount of silicon and also produces the least efficient solar cells. This means thin film system take up more area than the other two; an important factor to consider in relation to possible future upgrades; i.e. if you'll have enough space left to do so. The North (in the Southern hemisphere) or South (in the Northern hemisphere) facing roof collects the most energy. So this biases the roof area required. Your energy usage can be changed. Hot water (a major energy user) could be better using direct solar heating with peak demand boosting, either from mains or solar. There are other possibilities, either to reduce demand or to provide energy from other sources. Not all sunshine hours are equal. Hours around midday are far more productive than hours later in the day. This must be factored in.
Q:A question about solar panel?
I found some 0 square ft. solar panels that produce 30 watts . 3 watts per s.f. . A 2,000 s.f. home would consume around 2,000 kilowatt hours of electricity in summer months in areas that require air conditioning . This would require 67 kwh daily . You would need ,000 s.f. of panels and dozens of batteries to store the energy for night time .

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