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.
The ten largest solar PV plants in the U.S. are: 1  The 579-megawatt Solar Star project in California was the world's largest photovoltaic power station when completed in 2015. 2  The Topaz Solar Farm is a 550 MW photovoltaic power plant in San Luis Obispo County, California and fully operational since November 2014.