One Earth Energy, LLC Gibson City, IL

1. REX: NYSE www.rexamerican.com Stuart Rose, Chairman & CEO Doug Bruggeman, CFO June 2013 One Earth Energy, LLCGibson City, IL

2. This presentation contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Such statements can be identified by use of forward-looking terminology such as “project,”“may,”“expect,”“estimate,”“anticipate,” or “continue” or the negative thereof or other variations thereon or comparable terminology. You are cautioned that there are certain risks and uncertainties that could cause actual events or results to differ materially from those referred to in such forward-looking statements. These risks and uncertainties are described in our filings with the Securities and Exchange Commission. Safe Harbor

3. REX Overview • Successful alternative energy investor since 1998 • Synfuel investments of $6M yielded ~$178M return over 10 years (~40% CAGR) • Discontinued legacy retail operations in FY’09 to focus on alternative energy • Ethanol investments initiated in 2006 • $24M profit in FY’07 on $14M early ethanol investment • Alternative energy represented 99.8% of revenue and 84.1% of assets (4/30/13) • Ownership in sevenethanol production facilities • In aggregate, 691.3 million gallons of TTMannualized gallons shipped by seven plants • REX effective ownership interest of TTMannualized gallons shipped= 254.9 million gallons • Revenues from ethanol, distillers grains & corn oil • Strong, liquid balance sheet (as of 4/30/13) (based on 8.2M diluted shares) • Unrestricted cash$48.4M~ $ 5.90/share • Net book value of retail real estate $12.3M ~ $ 1.50/share • Carrying value of ownership in seven plants $195.0M ~ $23.78/share • REX shareholders’ book value $249.9M~$30.47/share • ROE-focused asset allocation discipline • 10.6% average ROE since 1993 (despite low returns on high cash balances) • Long-term/active share repurchase program • Insider ownership approximately 34% 3

4. REX Ethanol Strategy • Disciplined investment criteria • Invest only if project meets strategic and financial risk and return criteria • Align with farmers, farm cooperatives and farming communities as co-investors and owners of ethanol production facilities • Facilitates access to grain supply, local community support • Locate plants close to rail access and feedstocks • Utilize state-of-the-art ethanol production technology • Dry mill corn-processing • All plants are highly efficient Fagen, Inc. constructed utilizing ICM, Inc. technology • Fagen is large, respected U.S. green energy design-builder • Seek to match grain prices with ethanol and DDGsales at most plants • Forward grain purchases and ethanol sales contracts generally  two month duration • Derivative contracts are generally not employed to hedge commodity price risks • Maximize ethanol plant returns via: • Running plants efficiently, often above nameplate capacity • Sale of dried (and wet) distillers grains (DDGs) as animal feed • Production of corn oil 4

5. REX Ethanol Portfolio 1Figures as of 4/30/13 5

6. REX Ethanol Ownership Growth Rex Ethanol Ownership (in millions of gallons) 2012 Jan-12: REX increased stake in Patriot by 3%; total ownership now 27% 2011 2010 Nov-11: REX acquired 50% stake in Nugen Dec-11: Big River Boyceville interest added 2009 Jul-10: REX acquired 48% stake in Nugen May-09: Big River Galva commenced operation Aug-09: Big River United (Dyersville) interest added 6

7. High Return Ethanol Investments • * Calculated based upon the weighted average capital invested and returns generated over the time period 7

8. Ethanol Industry Considerations • The ethanol industry produced approximately 13.3 billion gallons of ethanol in 2012, thereby reducing U.S. reliance on foreign oil • Helps U.S. balance of trade • Helps U.S. move towards energy independence • Over 450M barrels of imported oil displaced - $47B value in 2012* • Approximately 1/3 of corn used in ethanol production is returned to feed market in the form of distiller grains, corn gluten meal and corn oil* • National benefits • Farmers require fewer government-sponsored price subsidies • Land transitioned away from “land bank” • Ethanol production generates higher tax revenues • Ethanol production added over $41B to GDP* • Ethanol production increased household income by ~$29B* • Industry receives no tax subsidies • Farm states are less impacted by challenged economic environment • Ethanol estimated to have supported over 365,000 jobs, including across ancillary industries, from agriculture to manufacturing to the service sector* • On a life cycle analysis basis, corn-based ethanol production and use reduces greenhouse gas emissions (GHGs) from 30-50% compared to gasoline production and use.* • $8.0B paid in federal, state and local taxes.* • Sources: • * Renewable Fuels Associations 8

9. Ethanol Federal EPA ethanol purchasing mandates continue to rise (1) : YearTarget 2013 13.8 BGY 2014 14.4 BGY 2015 & beyond 15.0 BGY Industry Nameplate Capacity Efficient plants expected to operate near capacity levels YearCapacity 201314.8 BGY Distillers Grains Rising corn prices have driven DDG pricing increases, helping offset impact on crush spreads Corn Oil Installed at REX’s two consolidated plants in Q1 FY’12 Two plants generated $17.7M of total revenues for TTM Demand/Pricing Drivers • 1Mandates can be partially met by use of available RINS from the prior years toward the current year requirements and/or to carry forward a deficit into the next compliance year. 9

10. Crush Spread & DDG Pricing • Crush Spread = price of 1 gallon of ethanol - cost of corn to produce it • One bushel of corn makes ~2.8 gallons of ethanol • Crush spread = Ethanol price – (Corn bushel price / 2.8) • Crush spread excludes other production, transportation costs, etc. • Dried distillers grains (DDGs) pricing supplements and, at times, offsets weaker crush spreads • REX’s average realized DDG prices per quarter are reflected on green line below Calculated using CBOT monthly average prices 10

11. Operating Results 11

12. Strong Balance Sheet 12

13. Ethanol plants and other industrial investments Energy projects using our commodity experience and state-of-the-art technology focus Share repurchases below book value ~2.1M shares repurchased over the last three years at average price of $16.86 ~4.3M shares repurchased over the last five years at average price of $13.72 Repurchased 245,434 shares in FY’12 at average price of $17.82 and 30,859 in Q1 FY’13 at an average price of $18.28 370,598 shares remaining under expanded repurchase authorization approved August 2012 8.2 million common shares outstanding Capital Allocation Priorities 13

14. REX Summary • Successful alternative energy investor since 1998 • Interests in seven ethanol production facilities with annualized sales of ~691 million gallons (TTM) • REX effective ownership interest of annualized TTMgallons sold = ~255 million gallons • Industry leading ethanol production skill and plant efficiencies • REX ethanol operations are among best performing plants • Alternative energy segment profit of $6.6M in Q1 FY’13 vs. $2.5M in Q1 FY’12 • Growth opportunities in ethanol and other industrial sectors • Expand ownership of existing facilities • Invest in new ethanol plants or industrial projects requiring similar skill sets • Proven management team with asset allocation discipline • 10.6% average ROE since 1993, despite low returns on high cash balances • Long-term program of share repurchases below book value • Insider ownership of 34% • Strong asset base (at 4/30/13): • Shareholders’ equity $249.9M (~$30.47 share) • Consolidated cash $73.8M • Real estate value $12.3M • 8.2M diluted shares outstanding 14

15. One Earth Energy, LLCGibson City, IL