Standard Test Conditions Stc For Solar Panels

These testing conditions are called standard test conditions or stc.

Standard test conditions stc for solar panels.

Stc stands for standard test conditions and are the industry standard for the conditions under which a solar panel are tested. Temperature of the cell 25 c. Specifically the light intensity is 1000 w m 2 with a spectrum similar to sunlight hitting the earth s surface at latitude 35 n in the summer airmass 1 5 the. By using a fixed set of conditions all solar panels can be more accurately compared and rated against each other.

Standard test conditions stc standard test conditions stc are the industry standard lab testing conditions that solar panels go through. There are three standard test conditions which are. Stc stands for standard test conditions and is the major solar panel output performance testing condition used by most manufacturers and testing bodies. Standard test conditions stc refers to the fixed set of laboratory conditions under which every solar module is tested.

Standard test conditions the nominal power of pv devices is measured under standard test conditions stc specified in standards such as iec 61215 iec 61646 and ul 1703. Because these conditions are the same across the industry one panel s performance metrics such as power rating module efficiency optimal voltage etc can be more accurately compared against other options on. When solar panels undergo performance testing they do so at fixed laboratory conditions known as standard test conditions stc. If you want an easy way to compare the efficiency of one solar panel to another look for the stc rating.

Test conditions and solar panels standard test conditions stc stc is the set of criteria that a solar panel is tested at. Well the light source is calibrated to a defined set of wavelengths and so that precisely 1 000 watts per square meter fall on the front glass of the solar panel. But what s standard about them. Since voltage and current change based on temperature and intensity of light among other criteria all solar panels are tested to the same standard test conditions.

This includes the cells temperature of 25 77. Having set criteria for all solar panels helps to ensure that all panels are held to the same guidelines and essentially that the same rating system is being used across the board. Manufacturers use stc testing to ensure that photovoltaic panels with similar energy output can be sold and used together.