电池板module efficiency是指什么？比如一块多晶230W的电池板，组件效率是15%，这个15%是什么，

【专家解说】：电池板module efficiency是指组件的转换效率，组件效率是15%应该就是指电池板的光电转换功率。 例：However, it is not only the module efficiency that decides whether a PV system is cost effective but also the timescale during which the module works efficiently in a daytime of use and the cost the module itself requires. 然而,决定光伏系统成本效率的因素不仅仅和组件的转换效率有关,还应考虑到组件在白天的有效工作时间以及组件的成本。