165 Watt (formerly 150 watt) Semi-Rigid Marine Solar Panel – Premium SunPower Solar Cells up to 25.4% efficient, the highest efficiency solar cells commercially available. This 165 watt semi-rigid monocrystalline solar panel will perform extremely well in both full and partial sun. It is built to withstand the harsh marine environment and is ideal for mounting on the rigid surface of a boat or van. You can walk, dance, or pile gear on top of it. It measures 26 x 48 inches and is available in black background. Ideal for hot environments