Portland Solar Panels - Factory Direct Sale:A-Grade High Efficiency 250W Poly Solar Panels

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Our solar cells are widely used in solar pump, solar lighting, lamps, household electricity, traffic, communication, meteorological, building and photovoltaic power plants and so on.

Characteristics

Max Power Voltage Vmp(V): 30.4

Max Power Current Imp(A): 8.26

Open Circuit Voltage(V) : 37.5

Voc(V)Short Circuit (A): 8.88

Current Isc(A)Max Power Pm(W): 250

Temperature Coefficient of Cells

NOCT	45
Temperature Coefficients of Isc(%/℃）	0.04
Temperature Coefficients of Voc(%/℃)	-0.34
Temperature Coefficients of Pmp(%/C)	-0.42

Mechanical Data

Limits

Guarantees

Products Guarantee	12yrs free from defects in materials and workmanship
Performance Guarantee	No less than 90% within 10yrs and no less than 80% within 25yrs
Certificates	TUV(IEC61215&IEC61730), CE

IV Curve

Factory Direct Sale: A-Grade High Efficiency 250W Poly Solar Panels

Q:Can solar panels be installed on a deck or patio?: Yes, solar panels can be installed on a deck or patio. In fact, these areas can often be ideal locations for solar panel installations as they are typically unobstructed by shade and have ample sunlight exposure. Additionally, installing solar panels on a deck or patio can help maximize the use of available space and may provide an aesthetically pleasing solution for homeowners. However, it is important to consult with a professional to determine the feasibility and structural integrity of the deck or patio for supporting the weight of the panels.

Q:what is one benifit in a solar panel?: In the UK, the only real benefit comes from the subsidies given to owners of solar panels. I believe the same is true elsewhere in the world. I suppose smugness might be a benefit though it is not justified.

Q:Can solar panels be used to power a telecommunications network?: Yes, solar panels can be used to power a telecommunications network. Solar panels can generate electricity from sunlight and can be connected to power the equipment and infrastructure of a telecommunications network. This renewable energy source can provide a reliable and sustainable power solution for remote or off-grid locations, reducing reliance on traditional electricity sources and minimizing environmental impact.

Q:Can solar panels be installed on a military base?: Yes, solar panels can be installed on a military base. In fact, many military bases around the world have already implemented solar energy systems as part of their efforts to reduce dependence on fossil fuels and increase sustainability. Solar panels can be installed on rooftops, parking lots, or open grounds of military bases to generate clean renewable energy.

Q:Are there any safety precautions to consider when installing solar panels?: Yes, there are several safety precautions to consider when installing solar panels. Firstly, it is important to work with a licensed and experienced professional who is trained in solar panel installation to ensure proper installation and minimize the risk of accidents. Additionally, it is crucial to turn off all electrical power and follow proper electrical safety procedures before installing solar panels. Adequate fall protection measures should be in place, especially when working on rooftops or elevated areas. It is also important to consider the weight and structural integrity of the roof to ensure it can support the panels. Lastly, proper grounding and wiring techniques should be followed to prevent electrical hazards.

Q:200 watt solar panel generates how much watts of electricity per month?: Depends where you live. Each kWp will generate in a year about 750kWh in northern England, or 900kWh in the south. About ,00kWh in the south of Germany or up to 2,200 kWh in the Californian desert. The farther you are from the equator, the bigger the difference between summer and winter months: in S California summer months may only generate 2 times as much electricity as winter months. In the UK it can be 4-5 times as much. 200 W is 0.2 kWp so divide the numbers I gave by 5 and then divide by 2 to get the 'average' month - you really need to look up 'insolation tables' for your area though!

Q:A homeowner is considering putting a horizontal solar panel on her roof to heat water for domestic use. An average increase of water temperature each day from 60oF to 20oF is wanted for 50 gallons. How large a panel would be needed on a clear winter day at 40o latitude if the overall efficiency is 50%?: Here's a typical 4' x 8' collector rating. 40 degree latitude would be a cool climate, so you look at row D, water heating in a cool climate. Probably take the middle rating, mildly sunny day, and it is 0,000BTU per panel per day (it's 9,000 on a sunny day). 38,700 BTU / 0,000 BTU = 3.87, they'd need about 3 to 4 panels. If you used the sunny day number, you'd only need 2, but 3 is more realistic, as it is not always a sunny day.

Q:I was thinking of having some installed on our rooftop and was wondering if it would be worth the cost? The house is located in Sac, Cali. The panels would face the sun 2 months out of the year and in the summer roughly 4 hours of straight sun.: You okorder /

Q:Can solar panels be installed on a pergola or gazebo?: Yes, solar panels can be installed on a pergola or gazebo.

Q:Can solar panels be installed on theme parks or amusement parks?: Yes, solar panels can be installed on theme parks or amusement parks. In fact, many amusement parks around the world are increasingly adopting solar energy to power their operations. Solar panels can be installed on rooftops, parking lots, or even integrated into the design of rides and attractions. This helps to reduce the parks' carbon footprint, lower energy costs, and promote sustainability in the entertainment industry.

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