Commercial and other industrial markets represented 40% of backlog. Core industrial markets, including petrochemical and oil and gas, represented 30%. Revenue in commercial and other industrial markets increased 54% year over year, while electric utility revenue rose 18%. Oil and gas revenue was relatively flat, petrochemical revenue declined 49%, and light rail traction power revenue fell 7% on low volume levels. About Powell Industries (NASDAQ:POWL)Powell Industries, Inc is an industrial electrical engineering company specializing in the design, manufacture and integration of customized power control and distribution solutions.