Prime renewable energy supply in two types of solar panels, which are mono-crystalline, and polycrystalline. Mono-crystalline solar panels are more efficient than polycrystalline panels. This means more electrical energy. Prime Renewable sale and install both types of panels In order to cater for wide range of customers. It is easy for client to identify these panels by simply looking at the color. Mono-crystalline panels are usually black in color, while polycrystalline panels are mostly blue in color.