Monocrystalline cells are notable for there dark blue/black color. 72 solar cells make up a monocrystalline panel and these types of solar panels have become very popular in the caravan camping and 4wd scene since they are vastly more efficient. In normal conditions the conversion efficiency of sunlight to electricity in Monocrystalline cells is much the same as for polycrystalline cells – however, the advantage is that monocrystalline technology has the highest power to area ratio out of monocrystalline, polycrystalline and amorphous solar cells.