Argan Inc is a United States-based construction firm that conducts operations through its wholly-owned subsidiaries, GPS, APC, TRC, and SMC. Through GPS and APC it provides a full range of engineering, procurement, construction, commissioning, maintenance, project development and technical consulting services to the power generation market, including the renewable energy sector, for a wide range of customers, including independent power project owners, public utilities, power plant heavy equipment suppliers and other commercial firms with power requirements in the U.S., Ireland and the U.K. It operates in three segments: Power Services, Industrial Services, and Teledata, out of which Power Services derives the majority of revenue.