DIY Lowest Cost 200W Monocrystalline Folding Solar PanelFlexible up to 30 degrees. Includes safety & installation guide. SunPower 170 Watt Flexible Solar Panel. Sunpower 170 watt flexible solar panel. high efficiency for marine, rv, camping dimensions 45.4 (l) x 31.9 (w) x 0.1 (h) (0.8 including junction box). The SunPower E-Flex range of panels are lightweight, flexible & powerful and currently include the 50W, 110W & 170W models.