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.
Largest solar plant in the world opens in US as industry grows The plant, in the Mojave Desert near the California-Nevada border, can power 140,000 homes February 13, 2014 9:30PM ET