Exhibit 99.1

AGAN, INC. June 2010 June 2011 October 2013

Disclaimer All statements in this presentation that are not historical are forward- looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934. Such forward-looking statements may be identified by words such as "believe," "intend," "expect," "may," "could," "would," "will," "should," "plan," "project," "contemplate," "anticipate," or similar statements. Because these statements reflect the current views of Argan, Inc. ("Argan" or the "Company") concerning future events, these forward-looking statements are subject to risks and uncertainties. Argan's actual results could differ materially from those anticipated in these forward- looking statements as a result of many factors, which are described under the caption "Risk Factors" in Argan's most recent Forms 10-K and 10-Q filed with the Securities and Exchange Commission. Argan undertakes no obligation to update publicly any forward-looking statements contained in this presentation.

Investment Highlights Demonstrated track record of performance Substantial industry growth prospects Strong backlog and bidding pipeline Compelling financial characteristics Experienced management team

Company Overview Year founded - 1961 Headquarters - Rockville, MD Ticker - NYSE:AGX Market cap (10/01/13) - $302 million FY 2013 Revenue - $279 million FY 2013 EBITDA - $37 million YTD (7/31/13) Revenue - $105 million YTD (7/31/13) EBITDA - $33 million Employees - 400 Backlog at 7/31/13 - $465 million (Moxie Patriot at $385 million expected in backlog during the calendar year)

Senior Management Team Rainer Bosselmann - Chairman and CEO Arthur Trudel - Chief Financial Officer Richard Deily - Corporate Controller Management has an established track record of creating value for the shareholders of Jupiter National, Inc. (AMEX:JPI), Arguss Communications, Inc. (NYSE:ACX) and Argan, Inc. (NYSE:AGX)

Senior Gemma Management Team William F. Griffin, Jr. - Co-Founder & Chief Executive Officer Daniel L. Martin - President Bill and Dan have more than 60 years combined experience in all facets of engineering, detailed design, procurement, construction management and other support services in the building of power plants and renewable energy facilities.

Business Overview Gemma Power Systems ("GPS") - provides engineering, procurement and construction ("EPC") services to power generation and renewable energy markets GPS accounted for 96% of total revenues during the six months ended July 31, 2013 Southern Maryland Cable, Inc. ("SMC") - provides telecommunications data infrastructure services FY 2014 YTD Revenue by Subsidiary 96% 4%

Industry Growth Drivers Substantial capacity additions will be required to meet rising electricity demand as the US economy continues to recover The retirement of older and inefficient plants and coal- fired generation facilities will further drive investment in new gas fired generation capacity

Overview of GPS Acquired by Argan - December 2006 Purchase price - $33.1 million $12.9 million in cash $20.2 million from issuance of 3.7 million shares Funded in part by $8.0 million secured four year amortizing term loan, which has been paid-in-full. Services - engineering, procurement and construction of natural gas fired and alternative power energy facilities Customers - utilities and independent power producers FY 2013 revenue: $261 million FY 2013 EBITDA: $41 million YTD (7/31/13) Revenue - $99 million YTD (7/31/13) EBITDA - $33 million Backlog at 7/31/13: $465 million (Moxie Patriot at $385 million expected in backlog during the calendar year)

Revenue and EBITDA Growth GPS's revenue and EBITDA have remained strong since the acquisition by Argan in December 2006 Revenue for Years Ended January 31 * Represents YTD July 2013 only 2006 2007 2008 2009 2010 2011 2012 FY2013 *YTD July 2013 Full Time 48.6 134.4 180.4 202.3 209.8 174.9 132.5 261.3 99.3 EBITDA for Years Ended January 31 * Represents YTD July 2013 only 2006 2007 2008 2009 2010 2011 2012 FY2013 *YTD July 2013 Full Time 3.8 5.4 16.8 31.2 17.2 22.2 15.7 40.9 33

GPS Track Record More than 10,000 megawatts of generating capacity installed and under contract on an EPC basis More than 435 megawatts of wind power facility development More than 370 million gallons per year of installed renewable fuels capacity 36 major turnkey engineering, procurement and construction projects Power experience includes combined cycle, combustion turbines, coal/wood fueled projects, wind plants, solar facilities and waste recovery facilities Renewable fuels experience includes bio-diesel, biomass and ethanol facilities Project development support of 1,600 megawatts of gas fired generating capacity Project development support of 240 megawatts of biomass-fired power plants

National Footprint GPS has the ability to provide EPC services to customers throughout the United States Historical Project Locations States in which GPS has completed projects.

Extensive Project Portfolio Power facilities - simple cycle solution CPV Sentinel Energy Project A.L. Pierce Re-powering Project Vandolah Power Project DeSoto County Power Project Indigo Energy Facility Larkspur Energy Facility Richmond County Phase I Power Monroe Power Project Richland Peaking Project Rocky Road Unit 4 Project Broad River Energy Center Middletown, CT Project Pollution solution Brayton Point Power Station La Rosita SCR Project Biomass Power Facility - Woodville, Texas Solar Facility - Canton, MA - Carver, MA - Beaumont Solar Power facilities - combined cycle solution Moxie Liberty Energy Project Colusa Generating Station Roseville Energy Park Hines PB-2 Power Project Rowan County Power Project Effingham County Power Project Richmond County Phase II Power Project Dighton Power Project Process facilities - biodiesel Renewable BioFuels Port Neches Galena Park Green Earth Fuels Houston LLC Process facilities - ethanol Carleton Ethanol Facility Wind Facilities - LaSalle County, Illinois - Vantage, Washington - Henry County, Illinois - Ebensburg, Pennsylvania

Current Projects Panda Liberty Energy Project - Panda Liberty, LLC (previously named Moxie Liberty) - design and construction of natural gas-fired power plant in Bradford County, PA 825 MW natural gas-fired combined cycle electrical generating facility Joint venture with Lane Construction. Gemma's share at 75% Contract value: $385 million Commenced project: Summer 2013 Expected completion: Spring 2016

Current Projects East Texas Electric Cooperative, Inc. (ETEC) - Woodville, Texas - engineer-procure-construct (EPC) contract to design and build a 49.9 MW biomass-fired power plant. Contract Value: $167 million Commenced Project: May 2012 Scheduled Completion: December 2014

U.S. Natural Gas Development Argan is participating in Marcellus Shale Region development activities with the object of developing large- scale power plants. The approach is to take principal positions in the initial stages of development, secure the rights for an EPC contract for the large scale power plant to be built on the development site. Argan then sells its interests in the site to the ultimate developer of the power plant. Argan has consummated the Moxie Liberty project with the acquisition by Panda Power Funds. Argan anticipates the consummation of the sale of Moxie Patriot site during the calendar year 2013.

Renewable Energy - Alternative Fuels Gemma Power Systems (GPS) has accepted the assignment to design and build facilities to produce alternative fuels. To date, GPS has performed the process design, detail engineering, procurement and construction of more than 370 million gallons per year of installed alternative fuels capacity.

Renewable Energy - Wind and Solar Gemma Renewable Power (GRP) is well positioned to respond to our clients' needs for the installation of wind and solar projects throughout North America. GRP's integrated team of experienced professionals provides all the following elements of a turnkey installation. GRP has the unique capability to self-perform the construction work associated with our projects. This approach ensures direct control of labor, safety, quality and schedule for each project. GRP provides state-of-the- art technology coupled with advanced project management tools to ensure every job is completed on- time, in budget, and to the highest standards of excellence. GRP has constructed more than 435MW of wind power facility capacity. GRP has successfully completed the design coordination, procurement and installation of ground mounted photovoltaic panels supporting 12MW of solar power facilities.

Competitive Landscape Larger Projects / Traditional Fuels Smaller Projects / Alternative Fuels

Growth Strategy Establish additional strategic alliances in the EPC space Make additional strategic acquisitions that complement our unique market position Exploit long-term relationships throughout the industry to aggressively build backlog of traditional and renewable energy projects Make strategic investments in power plant development projects as a means to create greater opportunities to build backlog of large scale EPC contracts.

Backlog Argan has significant contract backlog Historical Contract Backlog as of January 31 * * * 2007 2008 2009 2010 2011 2012 2013 Jul 31 2013

Investment Summary Demonstrated track record of performance Substantial industry growth prospects Strong backlog and bidding pipeline Compelling financial characteristics Experienced management team

Financials Consolidated Statements of Operations Three Months Ended July 31, Three Months Ended July 31, Three Months Ended July 31, Three Months Ended July 31, Three Months Ended July 31, Six Months Ended July 31, Six Months Ended July 31, Six Months Ended July 31, Six Months Ended July 31, Six Months Ended July 31, 2013 2013 2012 2012 2013 2013 2012 2012 Net revenues Power industry services $ 55,520,000 $ 78,109,000 $ 99,289,000 $ 135,837,000 Telecommunications infrastructure services 2,344,000 4,510,000 5,223,000 10,472,000 Net revenues 57,864,000 82,619,000 104,512,000 146,309,000 Cost of revenues Power industry services 34,804,000 66,182,000 66,050,000 115,166,000 Telecommunications infrastructure services 1,803,000 3,558,000 4,177,000 8,163,000 Cost of revenues 36,607,000 69,740,000 70,227,000 123,329,000 Gross profit 21,257,000 12,879,000 34,285,000 22,980,000 Selling, general and administrative expenses 1,601,000 3,297,000 5,044,000 6,325,000 Income from operations 19,656,000 9,582,000 29,241,000 16,655,000 Gains on the deconsolidation of VIEs 1,324,000 -- 2,444,000 -- Other income (expense), net 410,000 (10,000 ) 566,000 (19,000 ) Income from continuing operations before income taxes 21,390,000 9,572,000 32,251,000 16,636,000 Income tax expense 7,467,000 3,591,000 11,388,000 6,108,000 Income from continuing operations 13,923,000 5,981,000 20,863,000 10,528,000 Discontinued operations Loss on discontinued operations before income taxes -- -- -- (405,000 ) Income tax benefit -- -- -- 120,000 Loss on discontinued operations -- -- -- (285,000 ) Net income 13,923,000 5,981,000 20,863,000 10,243,000 Income (loss) attributable to noncontrolling interests 1,300,000 (220,000 ) 1,830,000 (396,000 ) Net income attributable to the stockholders of Argan $ 12,623,000 $ 6,201,000 $ 19,033,000 $ 10,639,000

Financials Consolidated Statements of Operations, continued Three Months Ended July 31 Three Months Ended July 31 Three Months Ended July 31 Three Months Ended July 31 Three Months Ended July 31 Six Months Ended July 31 Six Months Ended July 31 Six Months Ended July 31 Six Months Ended July 31 Six Months Ended July 31 Earnings (loss) per share attributable to the Argan stockholders: Continuing operations Basic $ 0.90 $ 0.45 $ 1.36 $ 0.80 Diluted $ 0.89 $ 0.45 $ 1.35 $ 0.78 Discontinued operations Basic $ -- $ -- $ -- $ (0.02 ) Diluted $ -- $ -- $ -- $ (0.02 ) Net income Basic $ 0.90 $ 0.45 $ 1.36 $ 0.78 Diluted $ 0.89 $ 0.45 $ 1.35 $ 0.76 Weighted average number of shares outstanding Basic 13,997,000 13,697,000 13,986,000 13,680,000 Diluted 14,129,000 13,935,000 14,132,000 13,952,000

Financials Reconciliation to EBITDA - Power Industry Services Reconciliation to EBITDA - Power Industry Services Reconciliation to EBITDA - Power Industry Services

Financials Reconciliation to EBITDA - Continuing Operations Reconciliation to EBITDA - Continuing Operations Reconciliation to EBITDA - Continuing Operations

Financials Consolidated Balance Sheets - July 31, 2013 & January 31, 2013 Consolidated Balance Sheets - July 31, 2013 & January 31, 2013 Consolidated Balance Sheets - July 31, 2013 & January 31, 2013

Financials Consolidated Balance Sheets, continued - July 31, 2013 & January 31, 2013 Consolidated Balance Sheets, continued - July 31, 2013 & January 31, 2013 Consolidated Balance Sheets, continued - July 31, 2013 & January 31, 2013

Infrastructure Services Peer Group Infrastructure Services Peer Group