DuPont has completed its largest solar panel array at a research center in Kauai, Hawaii. The solar array is expected to generate more than 700,000 kilowatt hours annually, or about 85 percent of the center’s energy needs.

The solar installation will help the facility avoid the emissions from about 100 cars per year and save $200,000 annually in electricity costs.

The one-acre array at Pioneer Hi-Bred Waimea Research Center was completed and fully operational in December 2008. Evergreen Solar made the panels and they were installed by REC Solar.

DuPont has already installed photovoltaic solar power systems for its R&D and business facilities in Wilmington, DE and Taoyuan, Taiwan.

DuPont, which has introduced programs to encourage and support its business units to implement energy efficiency goals, came in at No. 10 in Covalence’s latest Ethical Rankings.