Efficiency in photovoltaic solar cells, the ability of a panel to convert sunlight into usable energy for human consumption. Knowing the performance of a panel to choose the right pad for your PV system important. For smaller roofs, panels more efficient is necessary for reasons of space. As a manufacturer of determining the maximum efficiency of a photovoltaic solar panel anyway? Read below to find out.

First, let's say first of all,that the maximum power that is independent panel announced as Pmax 200W 200W plate efficiency. This is the area of solar cells up to 200W, which as efficiently get the panel determined. The jury determines the efficiency of a panel of power per unit area. The maximum efficiency of a photovoltaic solar cell is given by the following equation:

ηmax (most efficient) = Pmax (maximum power) / (ES, γsw (radiation incident flux) CA * (rangeCollector))

The flux of radiation incident could best be described as the amount of sunlight hitting the earth's surface in W/m2. The assumption of the incident radiation flux in standard test conditions (STC) using the manufacturer is 1000 W/m2. Note, however, that STC includes several assumptions and depends on your geographic location.

Now let's do an example calculation to determine how manufacturers calculate the maximum efficiency of solar cell in STC.

Suppose we havea 400W system with an area of 30 m2 and determine the maximum efficiency of your solar system at STC. Your first step would be the area of the panel "to units of square meters, to convert:

30 m2 x 1 m / (10.76 m2) = 2.79 m2

(In determining the efficiency, I personally dimensions of the frame in the calculations. Even if they receive needed for structural purposes, are components of field)

Now that youYour Pmax (400W), ES, γsw (1000W / m2) and AC (2.79 m2), you can plug the numbers into the equation of efficiency, in which all units of erase, and then multiplies the value of 100 % pass rate for efficiency:

ηmax (in percentage) = 400 W / (1000W / m2 x 2.79 m2) = 0.143 x 100% = 14.3%

This would be the maximum efficiency of your solar system, not the least that can be displayed on the panel data are unclear.

So ifThey determine what the solar panels are right for you, think about how important the efficiency of the panel to pay a premium price. Maybe you have a roof with a large area that would be ideal for the placement of solar panels, and thus lower costs and less efficient panels would work for you. If the roof is limited, however, you can use efficiency that are determined to reach your plate to the desired performance in a limited area.