Argan, Inc. is a holding company. The Company conducts operations through its subsidiaries, Gemma Power Systems, LLC and affiliates (GPS), Atlantic Projects Company Limited (APC), Southern Maryland Cable, Inc. (SMC) and The Roberts Company (Roberts). Through GPS and APC, the Company's power industry services segment provides engineering, procurement, construction, commissioning, operations management, maintenance, development, technical and consulting services to the power generation and renewable energy markets. Through SMC, the telecommunications infrastructure services segment of the Company provides project management, construction, installation and maintenance services to commercial, local government and federal government customers. Through Roberts, the Company's industrial fabrication and field services segment produces, delivers and installs fabricated steel components specializing in pressure vessels and heat exchangers for industrial plants.