80% and above.
The CTM value of solar cell modules must reach 80% and above to be considered qualified. Indeed, in the production of solar cell modules, there are many influencing factors in each link, such as cell quality, module processing technology, etc. Therefore, a CTM value above 80% is a reasonable requirement. .
CTM refers to the ratio of module output power to total cell output power during the process of assembling multiple solar cells into a solar cell module.
Solar panels are solar panels, did you spell that wrong? Solar panels are mainly made up of cells. Many domestic manufacturers call solar panel modules, so the first and third words basically have the same meaning, both referring to the pasolar rings.