Gast Home modules are subjected to rigorous testing including mechanical loading, hail, and PID resistance.
A solar panel’s efficiency rating is the amount of sunlight the panel can convert into usable energy. This determines the output of a solar panel (in watts). This panel has 18% efficiency.
Solar panels are tested in ideal conditions in a climate-controlled factory, so the panel output will be different in the real world, where there are often less than ideal conditions. The impact of temperature on a panel’s output is the temperature coefficient. The coefficient measures how much efficiency is lost for each degree above or below ideal test conditions. Heat reduces the efficiency of your solar panels, making them operate at a reduced output.
Underwriters Laboratories has been around for over 100 years. UL sets standards and performs safety tests to ensure products are safe for public use. These solar panels are certified to UL 1703, which is a requirement for solar panels to be installed on your home.
Gast Home offers a performance and workmanship warranty. Our performance warranty guarantees your panels will work above 15% efficiency for 30 years. Our workmanship warranty protects against manufacturing defects and other physical problems with your panels for 10 years.
Learn more: solar energy systems 101
To learn more about solar energy systems or the best panels for you, read our guide to solar energy.