Trina Solar is a PV solar panel manufacturer controlling every step of their solar module production process of both monocrystalline and polycrystalline solar panels. This allows Trina Solar to manufacture high-quality and low-cost solar panels for on-grid and off-grid residential, commercial and industrial solar energy applications. Trina Solar produces monocrystalline solar panels ranging from 165W to 240W and polycrystalline solar panels ranging from 215W to 240W.