YOLK’s product line of solar modules ‘YKSM’ is high efficiency mono-crystalline solar modules in a surface mount package. YKSM’s efficiency is typically measured above 22-23.7% at a wafer level. Its high efficiency and superior feature contributes to extension of the run time in a small footprint even in low-light conditions in addition to increasing battery life. The 22-23.7% power conversion efficiency means the 22-23.7% of the light energy is converted into electrical energy. They are extremely useful in applications requiring solar powered generation in a limited space.