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.
In response to its announcement to add solar panels to 1,000km of its roads over the next five years, France installed the worldâs first solar panel road In Tourouvre-au-Perche, Normandy, in December.