 ROCKVILLE, Md.--BUSINESS WIRE--Argan, Inc. NYSE: AGX Argan or the Company announced today that its wholly owned subsidiary, Gemma Power Systems Gemma, recently entered into an engineering, procurement and construction EPC services contract with CPV Maple Hill Solar, LLC, an affiliate of Competitive Power Ventures, Inc. CPV, to construct the Maple Hill Solar facility, which will be among the largest solar-powered energy plants in Pennsylvania. Gemma also received Notice to 