STC

The abbreviation STC in photovoltaics stands for "Standard Test Conditions" or in Slovak "Standard Test Conditions". This term is important in the context of photovoltaic systems because it allows for a uniform comparison of the performance of solar modules and other photovoltaic equipment.

STCs set out the specific conditions under which the performance and characteristics of PV modules are measured. These conditions include:

1. Solar radiation intensity: 1000 W/m²
2. Cell temperature: 25 °C
3. Air Mass (AM) 1.5 spectrum - spectral light source

STCs allow a PV module manufacturer to provide standardized data on the performance and efficiency of their products, making comparisons between different manufacturers and models easier. This is important for customers looking to select a solar module for their solar system, as it allows them to make an informed decision based on uniform module performance data.