Principal LED is one of the shining stars of San Angelo’s economic development efforts. A manufacturer of LED configurations for outdoor commercial signage, the company employs more than 80 people, produces a million and a half linear feet of product each month, and is closing in on the top market spot in its industry. And now, with the help of the City of San Angelo Development Corporation, it’s expanding its spacious digs at the Industrial Park and looking to hire scores more workers. Principal LED’s growth has been aided by the City’s Business Retention and Expansion Program, commonly called BREP.