Renal agenesis. Renal agenesis is a medical condition in which one (unilateral) or both (bilateral) fetal kidneys fail to develop.
Polycrystalline cells are composed of multiple silicon crystals, which is a cheaper way to manufacture solar modules. Put simply, these cells are easier for a factory to produce, so they are less expensive. Polycrystalline cells are made by several methods, but most commonly with a cast of molten silicon.
Polycrystalline. 1  No. of Cells â 72. 2  Weight â 26.5 kg. 3  Efficiency â up to 15.98%. 4  Output â up to 310 Wp. 5  Performance in low-light irradiance environment â good. 6  Withstands high wind loads (2400Pascal)