The corrugated medium and linerboard board are made of kraft containerboard, a paperboard material usually over 0.01 inches (0.25 mm) thick.
The panels contain cells made in China, Taiwan and, sometimes, Germany. Grape still plans to import inexpensive Chinese-made cells, and to buy Oregon-made inverters -- which convert direct current to alternating current -- for the panels it assembles in Eugene.
Grape Solar GS-STAR-100W Polycrystalline Solar Panel - Features. Grape Solar 100 Watt Solar Panel. The Grape Solar 100 Watt Solar Panel is the most cost effective module in its class. This panel is designed to be used as a battery charger when operated in conjunction with a Charge Controller.