PowerSecure International, Inc. provides products and services to electric utilities and to their commercial, institutional, and industrial customers in the United States. The company’s Distributed Generation segment is involved in manufacturing, installing, and operating electric generation equipment onsite. Its Solar Energy segment engages in the design, engineering, project development, sourcing and procurement, installation, and project management of PowerSecure solar energy systems that use photovoltaic and solar panels to provide utilities and their customers with power. The company’s Utility Infrastructure segment offers transmission and distribution systems, and substation construction and maintenance; installation of metering and lighting, and emergency storm restoration; engineering and design services for utilities; and consulting services for cybersecurity compliance, and regulatory and rate design matters. Its Energy Efficiency segment provides light emitting diode (LED), and lighting fixtures and lamps primarily under PowerSecure Lighting business; and energy efficiency upgrades for energy services companies and retailers. This segment also provides LED-based lamps and fixtures for department stores and other commercial applications under the Solais brand; LED-based lighting fixtures for grocery, drug, and convenience stores under the EfficientLights brand; and LED-based lighting fixtures, including street lights, area lights, indoor overhead lighting, and other specialty lighting products under the IES brand. PowerSecure International, Inc. was formerly known as Metretek Technologies, Inc. and changed its name to PowerSecure International, Inc. in August 2007. The company was founded in 1991 and is headquartered in Wake Forest, North Carolina. As of May 9, 2016, PowerSecure International, Inc. operates as a subsidiary of The Southern Company.