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.
According to Andy Black at the PG&E solar class at the Pacific Energy Center, some of the very first solar panels made back in the â70s are still pumping out power up in Northern California after 40 years, and theyâre still at about 80% of their original power ratings.ccording to Andy Black at the PG&E solar class at the Pacific Energy Center, some of the very first solar panels made back in the â70s are still pumping out power up in Northern California after 40 years, and theyâre still at about 80% of their original power ratings.