Calculating Solar Panel Efficiency

[whitehouse431]

I am currently doing a project concerning the efficiency of a solar panel array. I have data concerning the power (kW), energy (kWh), and solar radiation (W/m^2). My problem is that I am not sure exactly how to calculate the efficiency of the panels. I can't seem to find a standard way to do this. Could someone please help me out?

Appreciate it

[MarineLiner]

... the efficiency of a solar panel array. I have data concerning the power (kW), energy (kWh), and solar radiation (W/m^2). ... how to calculate the efficiency of the panels.

[Mosesbbhhh]

Efficiency is around 13%.
Take a panel of mine for example.
It is 1 meter x 600millimeters (0.6 square meter)
It is rated at 80 watts peak in 1000 watts per square meter radiation
80 watts divided by 0.6 gives 133 watts per square meter .
133 watts at 1000 watts radiation is 13.3%.

[MarineLiner]

Efficiency is around 13%.
.....
133 watts at 1000 watts radiation is 13.3%.

[Off Grid Solar]

The way a solar panel efficency on earth is determined is by how many watts of power is produced in a square meter. 100% on earth is 1,000 watts per square meter. If a solar panel sizes is 2 square meters and the output of the solar panel at 68 degrees F. is 160 watts the solar panel's efficiency is 8%. Temp. and size is always a factor and the output of the panel. Now for the big question. Yes in space the math is different. The formular is 1,500 watts a meter because there is nothing to weaken the sun's energy in space. But Temp is also a factor always to consider.

[toroitich]

Solar panel efficiency

Efficiency is around 13%.
Take a panel of mine for example.
It is 1 meter x 600millimeters (0.6 square meter)
It is rated at 80 watts peak in 1000 watts per square meter radiation
80 watts divided by 0.6 gives 133 watts per square meter .
133 watts at 1000 watts radiation is 13.3%.

Im requesting anyone to suggest which type of equipment or setup I need to measure the actual solar panel efficiency, for example a 120W silicon solar panel

[SP Novice]

Test Question on calulating solar panel efficiency

I am trying to write a test question related to a brief course on pv. I have the following information, can someone help me understand the calculation?
The question reads: What is the efficiency of a panel that measures 1m x 1.5m and is rated at 222P max?

[Mike90250]

Panel efficency is generally rated by exposure to a known source.
Look up words like INSOLATION sq meter

[CarrieTaylor]

hey guys last time I have 12.25kw mounted on my roof facing slightly south of east. Conditions such as temperature and weather affect your output. I can say that in NJ at a lattitude of 41 degrees averaged over the year each one KW of panels produced 1400-1480 KW-hours/year. The longest days have 16 hours and the shortest have 6 hours. My bill has been zero for the year.

[imtiyaz]

I am currently doing a project concerning the efficiency of a solar panel array. I have data concerning the power (kW), energy (kWh), and solar radiation (W/m^2). My problem is that I am not sure exactly how to calculate the efficiency of the panels. I can't seem to find a standard way to do this. Could someone please help me out?

Appreciate it

how we calculaitng solar panels efficiency

[Naptown]

I am currently doing a project concerning the efficiency of a solar panel array. I have data concerning the power (kW), energy (kWh), and solar radiation (W/m^2). My problem is that I am not sure exactly how to calculate the efficiency of the panels. I can't seem to find a standard way to do this. Could someone please help me out?

Appreciate it

Easy
Subject your panel to 1000W per square meter irradiation with a special light as in the factory.
Measure Vmp on the module to come up with watts produced.
Measure the overall size of the module including the frame.
Say it is 1 square meter and is producing 150 watts.
That module is 15% efficient.
Now the bad news. The equipment to do this will cost > 10K

[Mike90250]

Good post !!!!!!!1

If you are posting nonsense, to try to spam here, forget it.