Exhibit 99.1

NEWS RELEASE

Green Plains Reports Fourth Quarter and Full-Year 2014 Financial Results

Company Achieves Record Operating Income of $286 million for 2014

Results for the Fourth Quarter of 2014

Results for the Full Year of 2014

OMAHA, NEB. (GLOBE NEWSWIRE) – February 4, 2015 – Green Plains Inc. (NASDAQ: GPRE) announced today its financial results for the fourth quarter of 2014. Net income for the quarter was $42.2 million, or $1.07 per diluted share, compared to net income of $25.5 million, or $0.65 per diluted share, for the same period in 2013. Revenues were $829.9 million for the fourth quarter of 2014 compared to $712.9 million for the same period in 2013.

Net income for the full year was $159.5 million, or $3.96 per diluted share, compared to $43.4 million, or $1.26 per diluted share for the same period in 2013. Revenues were $3.2 billion for the full year of 2014 compared to $3.0 billion for the same period in 2013.

“We continue to focus on profitable growth opportunities within and adjacent to our value chain,” said Todd Becker, President and Chief Executive Officer. “This year gave us the opportunity to demonstrate the capability of the large diversified platform we have been building over the last 7 years. We produced a record 966 million gallons of ethanol, processed 10 million tons of corn, and earned over $100 million of non-ethanol operating income in 2014. We are also close to achieving our goal of zero net term debt”

During the fourth quarter, Green Plains ethanol production totaled 246.6 million gallons, or approximately 96% of its daily average production capacity. Non-ethanol operating income from the corn oil production, agribusiness, and marketing and distribution segments was $23.9 million in the fourth quarter of 2014 compared to $28.2 million for the same period in 2013. Non-ethanol operating income for the year ended December 31, 2014 was $103.8 million compared to $80.9 million for the same period in 2013.

“U.S. ethanol margins have been volatile during the first part of this year. Demand for the product at these lower price levels remains robust, both domestically and internationally. We expect the industry will continue to adjust to lower energy prices and remain optimistic we will perform well over the coming year,” added Becker. “Green Plains just completed its sixth consecutive year of profitable operations, a testament to the resiliency of our people, our assets and our strategy.”

Green Plains had $455.3 million in total cash and equivalents and $187.5 million available under committed loan agreements at subsidiaries (subject to borrowing base restrictions and other specified lending conditions) at December 31, 2014. Green Plains reduced term debt outstanding by $100.8 million and invested $85.4 million in capital expenditures and acquisitions during 2014.

Fourth quarter 2014 EBITDA, which is defined as earnings before interest, income taxes, depreciation and amortization, was $90.7 million compared to $63.9 million for the same period in 2013. For the year ended December 31, 2014, EBITDA was $350.7 million compared to $156.6 million for the same period in 2013. For reconciliations of net income to EBITDA, see “EBITDA” below.

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2014 Business Highlights

Conference Call

On February 5, 2015, Green Plains will hold a conference call to discuss its fourth quarter and full-year 2014 financial results and other recent developments. Green Plains’ participants will include Todd Becker, President and Chief Executive Officer, Jerry Peters, Chief Financial Officer, and Jeff Briggs, Chief Operating Officer. The time of the call is 11:00 a.m. ET / 10:00 a.m. CT. To participate by telephone, the domestic dial-in number is 888-523-1228 and the international dial-in number is 719-785-1765.

The conference call will be webcast and accessible at www.gpreinc.com. Listeners are advised to go to the website at least 10 minutes prior to the call to register, download and install any necessary audio software. A slide presentation will be available on Green Plains’ website at http://investor.gpreinc.com/events.cfm. The conference call will be archived and available for replay through February 9, 2015.

About Green Plains

Green Plains Inc. (NASDAQ: GPRE) is a diversified commodity-processing business with operations related to ethanol production, corn oil production, grain handling and storage, cattle feedlot operations, and commodity marketing and distribution services. The Company processes over ten million tons of corn annually, producing over one billion gallons of ethanol, three million tons of livestock feed and 250 million pounds of industrial grade corn oil at full capacity. Green Plains also is a partner in a joint venture to commercialize advanced technologies for growing and harvesting algal biomass.

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Safe Harbor

This news release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, as amended. Such statements are identified by the use of words such as “anticipates,” “believes,” “estimates,” “expects,” “goal,” “intends,” “plans,” “potential,” “predicts,” “should,” “will,” and other words and terms of similar meaning in connection with any discussion of future operating or financial performance. Such statements are based on management’s current expectations and are subject to various factors, risks and uncertainties that may cause actual results, outcome of events, timing and performance to differ materially from those expressed or implied by such forward-looking statements. Green Plains may experience significant fluctuations in future operating results due to a number of economic conditions, including, but not limited to, competition in the ethanol and other industries in which the Company operates, commodity market risks including those that may result from current weather conditions, financial market risks, counter-party risks, risks associated with changes to federal policy or regulation, risks related to closing and achieving anticipated results from acquisitions, risks associated with the joint venture to commercialize algae production and the growth potential of the algal biomass industry, and other risks detailed in the Company’s reports filed with the Securities and Exchange Commission, including its Annual Report on Form 10-K for the year ended December 31, 2013, and in the Company’s subsequent filings with the SEC. In addition, the Company is not obligated, and does not intend, to update any of its forward-looking statements at any time unless an update is required by applicable securities laws.

Consolidated Financial Results

The following are consolidated statements of operations for Green Plains (in thousands, except per share amounts):

Consolidated revenues increased by $117.1 million for the three months ended December 31, 2014 compared to the same period in 2013. The revenue increase is attributable to increased sales of ethanol, distillers grains and corn oil as a result of the addition of the Fairmont, MN and Wood River, NE ethanol plants in November 2013. Gross profit increased by $25.5 million for the three months ended December 31, 2014 compared to the same period in 2013 primarily as a result of increased volumes and improved margins for ethanol production, as well as increased merchant trading activity, offset by reduced income from crude oil transportation.

Operating income increased by $22.9 million for the three months ended December 31, 2014 compared to the same period in 2013 as a result of the factors discussed above partially offset by a $2.6 million increase in selling, general and administrative expenses. Interest expense increased by $0.2 million for the three months ended December 31, 2014 compared to the same period in 2013 due to higher borrowing costs, partially offset by lower average balances outstanding. Income tax expense was $22.4 million for the three months ended December 31, 2014 compared to $15.4 million for the same period in 2013.

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For 2013 and the first quarter of 2014 diluted EPS is computed by dividing net income on an if-converted basis, with respect to the 3.25% Notes and the 5.75% Notes, by the weighted average number of common shares outstanding during the period, adjusted for the dilutive effect of any outstanding dilutive securities. All of the 5.75% Notes were retired during the first quarter of 2014. During the second quarter of 2014, the Company received shareholder approval to allow for flexible settlement in cash, shares of common stock, or a combination of cash and shares of common stock for the conversion of the 3.25% Notes. The Company intends to settle conversions in cash for the principal amount and cash or shares of the Company’s common stock for any related conversion premium. Accordingly, beginning in the second quarter of 2014, diluted EPS is computed using the treasury stock method by dividing net income by the weighted average number of common shares outstanding during the period, adjusted for the dilutive effect of any outstanding dilutive securities. The calculations of basic and diluted EPS are as follows (in thousands):

Operating Segment Information

Green Plains’ operating segments are as follows: (1) production of ethanol and distillers grains, collectively referred to as ethanol production, (2) corn oil production, (3) grain handling and storage and cattle feedlot operations, collectively referred to as agribusiness, and (4) marketing, merchant trading and logistics services for Company-produced and third-party ethanol, distillers grains, corn oil and other commodities, and the operation of fuel terminals, collectively referred to as marketing and distribution. Selling, general and administrative expenses, primarily consisting of compensation of corporate employees, professional fees and overhead costs not directly related to a specific operating segment, are reflected in the table below as corporate activities. The following is selected operating segment financial information for the periods indicated (in thousands):

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During the normal course of business, the Company enters into transactions between segments. These intersegment activities are recorded by each segment at prices approximating market and treated as if they are third-party transactions. Consequently, these transactions impact segment performance. Intersegment revenues and corresponding costs are eliminated in consolidation and do not impact consolidated results.

Ethanol Production Segment

The table below presents key operating data within the ethanol production segment for the periods indicated:

Revenues in the ethanol production segment increased by $20.8 million for the three months ended December 31, 2014 compared to the same period in 2013 primarily due to higher volumes sold, partially offset by lower average ethanol and distillers grains prices. The ethanol production segment produced and sold 246.6 million gallons of ethanol, which represents approximately 96% of daily average production capacity, during the fourth quarter of 2014.

Cost of goods sold in the ethanol production segment decreased by $3.7 million for the three months ended December 31, 2014 compared to the same period in 2013. Corn consumption increased by 13.4 million bushels but the average cost per bushel decreased by 20% during the three months ended December 31, 2014 compared to the same period in 2013. As a result of the factors identified above, gross profit and operating income for the ethanol production segment increased by $24.5 million and $22.8 million, respectively, for the three months ended December 31, 2014 compared to the same period in 2013.

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Depreciation and amortization expense for the ethanol production segment was $13.6 million for the three months ended December 31, 2014 compared to $11.9 million during the same period in 2013, due to the increased expenses from the Fairmont and Wood River plants, which were acquired in 2013.

Corn Oil Production Segment

Revenues in the corn oil production segment increased by $1.2 million for the three months ended December 31, 2014 compared to the same period in 2013. During the three months ended December 31, 2014, the corn oil production segment sold 63.1 million pounds of corn oil compared to 50.9 million pounds in the same period of 2013. The average price realized for corn oil was approximately 14% lower for the fourth quarter of 2014 compared to the same period in 2013. Gross profit and operating income in the corn oil production segment increased by $1.2 million and $1.0 million, respectively for the three months ended December 31, 2014 compared to the same period in 2013.

Agribusiness Segment

Revenues in the agribusiness segment increased by $18.8 million, and gross profit and operating income increased by $3.7 million and $2.6 million, respectively, for the three months ended December 31, 2014 compared to the same period in 2013. The segment sold 78.1 million bushels of grain, including 75.0 million bushels to the ethanol production segment, during the three months ended December 31, 2014 compared to sales of 60.6 million bushels of grain, including 59.6 million bushels to the ethanol production segment, during the same period in 2013. The increase in grain sold during the three months ended December 31, 2014 compared to the same period in 2013 is due to an increase in the number of ethanol plants in the ethanol production segment to which the agribusiness segment supplied corn, including the ethanol plants in Fairmont and Wood River, which were acquired in November 2013. Additionally, $13.2 million of the increase in revenues is due to the cattle-feeding operation that was acquired during the second quarter of 2014.

Marketing and Distribution Segment

Revenues in the marketing and distribution segment increased by $139.9 million for the three months ended December 31, 2014 compared to the same period in 2013. Of the increase in revenues, $100.5 million was primarily due to the following factors: an increase in the volume of ethanol and distillers grains sold from the recently-acquired ethanol plants and an increase in merchant trading of distillers grains, corn oil and other grains. In addition, revenues from the sale of natural gas to the ethanol production segment increased by $44.9 million. Effective in the fourth quarter of 2013, the marketing and distribution segment provides natural gas procurement for the ethanol plants.

The marketing and distribution segment sold 308.7 million and 263.9 million gallons of ethanol during the three months ended December 31, 2014 and 2013, respectively. Gross profit and operating income for the marketing and distribution segment decreased by $6.1 million and $7.9 million, respectively, for the three months ended December 31, 2014 compared to the same period in 2013, primarily due to increased freight charges within the marketing and distribution segment for ethanol and distillers grains.

Intersegment Eliminations

Intersegment eliminations of revenues increased by $63.6 million for the three months ended December 31, 2014 compared to the same period in 2013 due to the following factors: increased corn sales from the agribusiness segment to the ethanol production segment of $3.6 million, increased natural gas sales from the marketing and distribution segment to the ethanol production segment of $44.9 million, decreased distillers grains sales from ethanol to marketing and distribution of $13.0 million, and increased sales of ethanol from the ethanol production segment to the marketing and distribution segment of $24.7 million, which is primarily due to the ethanol plants acquired in the fourth quarter of 2013. Intersegment eliminations of gross profit and operating income decreased by $2.2 million for the three months ended December 31, 2014 compared to the same period in 2013 due primarily to decreased average margins during the fourth quarter of 2014.

Profit is recognized by the ethanol production segment upon sale to the marketing and distribution segment but is eliminated from consolidated results until title to the product has been transferred to a third party. Although ethanol quantities held as inventory by the marketing and distribution segment increased modestly during the fourth quarter, the average margin per gallon realized by the ethanol production segment decreased, resulting in a reduction in deferred intersegment profits during the fourth quarter. This was partially offset by increased intersegment profits eliminated for corn oil and distillers grains in transit to customers at the end of the fourth quarter of 2014 which will be recognized in future periods.

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Non-GAAP Reconciliation

EBITDA

Management uses EBITDA to measure the Company’s financial performance and to internally manage its businesses. Management believes that EBITDA provides useful information to investors as a measure of comparison with peer and other companies. EBITDA should not be considered an alternative to, or more meaningful than, net income or cash flow as determined in accordance with generally accepted accounting principles. EBITDA calculations may vary from company to company. Accordingly, the Company’s computation of EBITDA may not be comparable with a similarly-titled measure of another company. The following sets forth the reconciliation of net income to EBITDA for the periods indicated (in thousands):

Summary Balance Sheets

The following is condensed consolidated balance sheet information (in thousands):

As of December 31, 2014, Green Plains had $455.3 million in total cash and equivalents and $187.5 million available under committed loan agreements at subsidiaries (subject to borrowing base restrictions and other specified lending conditions). Total debt at December 31, 2014 was $672.8 million, including $209.9 million outstanding under working capital revolvers and other short-term borrowing arrangements in the marketing and distribution and agribusiness segments. As of December 31, 2014, Green Plains had total assets of approximately $1.8 billion, total stockholders’ equity of approximately $797.4 million, and approximately 37.6 million common shares outstanding.

Contact: Jim Stark, Vice President - Investor and Media Relations, Green Plains Inc. (402) 884-8700

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