SHENANDOAH, IA -- (MARKET WIRE) -- 03/30/07 -- Green Plains Renewable Energy, Inc. (the "Company") (NASDAQ: GPRE) (AMEX: GPRE) announced today that BUYINS.NET (www.buyins.net) is initiating coverage of Green Plains Renewable Energy, Inc. after releasing the latest short sale data to March 2007. From March 2006 to March 2007 approximately 3 million total aggregate shares of GPRE have traded for a total dollar value of nearly $98.6 million. The total aggregate number of shares shorted in this time period is approximately 606,228 shares. The GPRE SqueezeTrigger price of $32.54 is the volume weighted average short price of all short selling in GPRE. The first of several short squeezes is expected to begin when shares of GPRE close above $20.62, where just over 20,000 shares have been shorted. To access SqueezeTrigger Prices ahead of potential short squeezes beginning, visit http://www.buyins.net.

Month       Total Vol.  Short Vol.   Avg. Price    Short $ Value
-----       ---------   ---------    ----------    -------------
March '06   266,850     53,370       $39.72        $2,119,856
April       517,373     103,475      $40.67        $4,208,312
May         592,931     118,586      $40.41        $4,792,068
June        241,677     48,335       $33.59        $1,623,586
July        101,172     20,234       $32.61        $659,844
August      202,139     40,428       $29.39        $1,188,173
September   244,922     48,984       $22.85        $1,119,294
October     144,262     28,852       $23.47        $677,166
November    134,839     26,968       $26.65        $718,692
December    143,090     28,618       $25.53        $730,618
January '07 180,204     36,041       $22.18        $799,385
February    153,231     30,646       $20.98        $642,957
March       108,450     21,690       $20.62        $447,248

Total:      3,031,140   606,228      $32.54        $19,727,198

*short volume is approximated using a proprietary algorithm.
**average short price is calculated using a volume weighted average short
price.
***short volume is the total short trade volume and does not account for
covers.

About Green Plains Renewable Energy, Inc.

Green Plains Renewable Energy, Inc. is currently building two 50-million-gallon ethanol plants in Iowa. The first is being built in Shenandoah, Iowa and is expected to be operational in mid 2007. The Company's second plant is being built in Superior, Iowa. The Superior plant is expected to commence operations sometime near the end of 2007.

About BUYINS.NET

WWW.BUYINS.NET is a service designed to help bonafide shareholders of publicly traded US companies fight naked short selling. Naked short selling is the illegal act of short selling a stock when no affirmative determination has been made to locate shares of the stock to hypothecate in connection with the short sale. BUYINS.NET has built a proprietary database that uses Threshold list feeds from NASDAQ, AMEX and NYSE to generate detailed and useful information to combat the naked short selling problem. For the first time, actual trade-by-trade data is available to the public that shows the attempted size, actual size, price and average value of short sales in stocks that have been shorted and naked shorted. This information is valuable in determining the precise point at which short sellers go out-of-the-money and start losing on their short and naked short trades.

BUYINS.NET has built a massive database that collects, analyzes and publishes a proprietary SqueezeTrigger for each stock that has been shorted. The SqueezeTrigger database of nearly 1,250,000,000 short sale transactions goes back to January 1, 2005 and calculates the exact price at which the Total Short Interest is short in each stock. This data was never before available prior to January 1, 2005 because the Self Regulatory Organizations (primary exchanges) guarded it aggressively. After the SEC passed Regulation SHO, exchanges were forced to allow data processors like BUYINS.NET to access the data.

The SqueezeTrigger database collects individual short trade data on over 7,000 NYSE, AMEX and NASDAQ stocks and general short trade data on nearly 8,000 OTCBB and PINKSHEET stocks. Each month the database grows by approximately 50,000,000 short sale transactions and provides investors with the knowledge necessary to time when to buy and sell stocks with outstanding short positions. By tracking the size and price of each month's short transactions, BUYINS.NET provides institutions, traders, analysts, journalists and individual investors the exact price point where short sellers start losing money and a short squeeze can begin.

All material herein was prepared by BUYINS.NET, based upon information believed to be reliable. The information contained herein is not guaranteed by BUYINS.NET to be accurate, and should not be considered to be all-inclusive. The companies that are discussed in this opinion have not approved the statements made in this opinion. A third party has paid $995.00 to purchase data for information provided in this report. The third party, its family members or affiliates may benefit from a rise in the share price. The data service can be cancelled at any time. This opinion contains forward-looking statements that involve risks and uncertainties. This material is for informational purposes only and should not be construed as an offer or solicitation of an offer to buy or sell securities. BUYINS.NET is not a licensed broker, broker dealer, market maker, investment banker, investment advisor, analyst or underwriter. Please consult a broker before purchasing or selling any securities viewed on or mentioned herein. BUYINS.NET will not advise as to when it decides to sell and does not and will not offer any opinion as to when others should sell; each investor must make that decision based on his or her judgment of the market.

BUYINS.NET and SQUEEZETRIGGER are intended for use by stock market professionals. As a member, visitor, or user of any kind, you accept full responsibilities for your investment and trading actions. The contents of BUYINS.NET, including but not limited to all implied or expressed views, opinions, teachings, data, graphs, opinions, or otherwise are not predictions, warranty, or endorsements of any kind. Please seek stock market advice from the proper securities professional, or investment advisor.

By visiting BUYINS.NET or using any data or services, you agree to assume full responsibility for the decisions or actions that you undertake. BUYINS.NET, LLC, its owner(s), operators, employees, partners, affiliates, advertisers, information providers and any other associated person or entity, shall under no circumstances be held liable to the user and/or any third party for loss or damages of any kind, including but not limited to trading losses, lost trading opportunity, direct, indirect, consequential, special, incidental, or punitive damages. As a user, you agree that any damages collected shall not exceed the amount paid to BUYINS.NET and/or its owners. As a website user, you agree that any and all legal matters of any kind are to be reviewed and handled in their entirety within the State of California only. By using the services of this website, you are consenting to the terms as outlined, and forfeit all legal jurisdictions in any other State.

Past performance is not a guarantee of future outcomes. Any and all examples are hypothetical and should not be considered a guarantee or endorsement of such trading activity. BUYINS.NET does not take responsibility for problems of any kind, including but not limited to issues with operations, data accuracy or completeness, contacting issues, technical issues, and timeliness. BUYINS.NET places great integrity on the data collected and distributed. This information is deemed reliable, but not guaranteed. All information and data is provided "as is" without warranty or guarantee of any kind.

Please seek investment and/or trading advice, council, information or services from a securities professional. You should consider these factors in evaluating the forward-looking statements included herein, and not place undue reliance on such statements. The forward-looking statements in this release are made as of the date hereof and BUYINS.NET undertakes no obligation to update such statements.

This release contains "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E the Securities Exchange Act of 1934, as amended and such forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. "Forward-looking statements" describe future expectations, plans, results, or strategies and are generally preceded by words such as "may," "future," "plan" or "planned," "will" or "should," "expected," "anticipates," "draft," "eventually" or "projected." You are cautioned that such statements are subject to a multitude of risks and uncertainties that could cause future circumstances, events, or results to differ materially from those projected in the forward-looking statements, including the risks that actual results may differ materially from those projected in the forward-looking statements as a result of various factors, and other risks identified in a companies' annual report on Form 10-K or 10-KSB and other filings made by such company with the SEC.

Contact:
Green Plains Renewable Energy, Inc.
712.246.2932
http://www.gpreethanol.com