The most popular brands for Polycrystalline Solar Panel Includes Solar, Eco-worthy, uxcell, Dokio, Projecta, SOLARTECH POWER INC., WindyNation, Newpowa, Victron Energy, Heart among many others. SEPCO has made a name as a pioneer in the solar lighting industry. ERIT is an innovative solution in which high-efficiency photovoltaic modules and pre-insulated panels become a single roofing product. Peak power (Wp): 320 W - 345 W. Product Details: Polycrystalline solar panels manufactured by Pahal Solar, made from several silicon crystals, quadrilateral in shape with a bluish hue, and. Polycrystalline solar panels are made by forming silicon crystal fragments into a solar panel shape. On average, you can expect to pay $. 50 per panel, before installation and additional solar elements.