Exhibit 99.1

MOXIE LIBERTY LLC FINANCING AND SALE IS CONSUMMATED

August 22, 2013 – ROCKVILLE, MD – Argan, Inc. (NYSE MKT: AGX) announced that Panda Power Funds has completed the acquisition and successful financing of Moxie Liberty LLC. Gemma Power Inc. (GPI), a wholly-owned subsidiary of Argan Inc., has been funding Moxie Liberty in the development of an 829 MW natural gas-fired power plant in Bradford County, Pennsylvania. As a result of the sale, GPI is receiving development success fees and repayment of the working capital advances plus accrued interest from the proceeds. Gemma Power Systems LLC (GPS), another subsidiary of Argan, has been awarded the EPC Agreement to design and build the power plant. The EPC Agreement has been assigned to Gemma-Lane Liberty Partners (GLLP), a joint venture between Gemma Power Systems and The Lane Construction Corporation for the construction of the plant. GPS holds a 75% interest in GLLP.

Commenting on the Moxie Liberty project, Rainer Bosselmann, Chairman and Chief Executive Officer stated, “We are pleased to join forces with Panda Power Funds in constructing this large scale power facility.”

About Argan, Inc.

Argan’s primary business is designing and building energy plants through its Gemma Power Systems subsidiaries. These energy plants include traditional natural gas-fired power plants as well as alternative energy facilities including biodiesel, ethanol and renewable energy sources such as wind power. Argan also owns Southern Maryland Cable, Inc.

Certain matters discussed in this press release may constitute forward-looking statements within the meaning of the federal securities laws and are subject to risks and uncertainties including, but not limited to: (1) the Company’s ability to achieve its business strategy while effectively managing costs and expenses; (2) the Company’s ability to successfully and profitably integrate acquisitions; and (3) the continued strong performance of the energy sector. Actual results and the timing of certain events could differ materially from those projected in or contemplated by the forward-looking statements due to a number of factors detailed from time to time in Argan’s filings with the Securities and Exchange Commission. In addition, reference is hereby made to cautionary statements with respect to risk factors set forth in the Company’s most recent reports on Form 10-K and 10-Q, and other SEC filings.