“Four years ago, that was at 50% and it’s steadily increased since,” said Tristan Erion-Lorico. Image: Kiwa PVEL. A total of 83% of module manufacturers have had at least one test failure in the Kiwa ...

A research group in Japan identified a correlation between damp heat test of 1,000 hours to 3–6 years of field exposure in humid areas and changes in acetic acid concentration in photovoltaic modules.

Modules are given a grade from 0 to 100 points for each test. In calculating the average grade of the module, each individual test grade is given a certain weighting as shown in the table. The tests ...

NASA's Apollo 5 mission launched on Jan. 22, 1968 and marked the first test flight of the Lunar Module that would eventually carry astronauts to the moon. See photos from the historic mission here!