solar efficiency

How heat affects solar panel performance

It may seem counter-intuitive, but solar panel efficiency is affected negatively by temperature increases.  Photovoltaic modules are tested at a temperature of 25 degrees C (STC) – about 77 degrees F., and depending on their installed location, heat can reduce output efficiency by 10-25%.  As the temperature of the solar panel increases, its output current increases exponentially, while the voltage output is reduced linearly. In fact, the voltage reduction is so predictable, that it can be used to accurately measure temperature.  

Fraunhofer ISE Claims New Solar Cell Efficiency Record

The Germany-based Fraunhofer Institute for Solar Energy Systems (ISE) has claimed a new world record for the most efficient multicrystalline silicon solar cell after its researchers produced a cell w

Solar Frontier Achieves Thin-Film Solar Cell Efficiency Of 22.3%

Japan-based Solar Frontier has achieved a solar cell efficiency of 22.3% with its copper indium selenium (CIS) thin-film technology.

Through joint research with the New Energy and Industrial Technology Development Organization of Japan, Solar Frontier achieved the results on a 0.5cm² cell. The Fraunhofer Institute has independently verified the test.

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