United Displaycraft, a Des Plaines, IL-based display firm, has completed a solar array installation that will double the company’s energy production and provide nearly 40% of the annual electricity requirement of its headquarters manufacturing facility. United Displaycraft has added an additional 214 kW photovoltaic array to a 152 kW array previously installed in 2010. “At 1,400 panels, this will be the largest solar array installation of its kind in the state of Illinois,” said Rich Carrigan, President of United Displaycraft.