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.
A Pioneer in Solar Energy. SolarWorld is a solar pioneer, one of the worldâs largest solar-technology producers and the largest U.S. solar panel manufacturer for 40 years. In its technology, manufacturing, performance, service and environmental track record, the company is a solar industry leader.