Summary: Choosing between polycrystalline and monocrystalline solar panels can be tricky. This article breaks down their differences in efficiency, cost, and applications, helping you decide which EK photovoltaic panel suits your energy needs. On average, you can expect to pay $. 50 per panel, before installation and additional solar elements. Whether you're designing a residential rooftop system or a large-scale solar farm, understanding panel dimensions and compatibility is crucial for. Polycrystalline, multicrystalline, or poly solar panels are a type of photovoltaic (PV) panel used to generate electricity from sunlight.