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.
World's largest concentrated solar plant switches on in the Sahara. Updated 5:55 AM ET, Mon February 8, 2016. Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds.