Exhibit 99.1

GREEN PLAINS RENEWABLE ENERGY, INC.

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS

AND RELATED NOTES THERETO

The unaudited pro forma condensed combined financial statements are based upon the combined historical financial position and results of operations of Green Plains Renewable Energy, Inc. (“Green Plains”) and Global Ethanol, LLC (“Global”). The unaudited pro forma condensed combined financial statements give effect to the merger of Green Plains and Global, as described in the Agreement and Plan of Merger (the “Merger Agreement”) among Green Plains, GPMS, Inc., Global, and Global Ethanol, Inc. (the “Merger”).

Basis of Presentation

The unaudited pro forma condensed combined balance sheet as of June 30, 2010 combines the historical consolidated balance sheets of Green Plains and Global, giving effect to the Merger as if it had occurred on June 30, 2010. The unaudited pro forma condensed combined statements of operations for the fiscal year ended December 31, 2009 and for the six months ended June 30, 2010 combine the historical consolidated statements of operations of Green Plains and Global, giving effect to the Merger of Green Plains and Global as if it had occurred on January 1, 2009. The historical consolidated financial information has been adjusted in the unaudited pro forma condensed combined financial statements to give effect to pro forma events and adjustments that are (1) directly attributable to the Merger, (2) factually supportable, and (3) with respect to the statements of operations, expected to have a continuing impact on the combined results. The unaudited pro forma condensed combined financial information should be read in conjunction with the accompanying notes to the unaudited pro forma condensed combined financial statements. In addition, the unaudited pro forma condensed combined financial information was based on and should be read in conjunction with:

Since Green Plains’ fiscal year ends December 31 and Global’s fiscal year ends June 30, Global’s historical statement of operations for the year ended December 31, 2009 was derived by adding the results for the six months ended June 30, 2009 to Global’s results for the year ended June 30, 2010 and removing the results for the six months ended June 30, 2010. Global’s historical statement of operations for the six months ended June 30, 2010 was derived by removing the results for the six months ended December 31, 2009 from Global’s results for the year ended June 30, 2010.

The unaudited pro forma condensed combined financial information has been presented for informational purposes only. The unaudited pro forma condensed combined financial information is not necessarily indicative of what the combined company’s financial position or results of operations actually would have been had the Merger been completed as of the dates indicated. In addition, the unaudited pro forma condensed combined financial information does not purport to project the future financial position or operating results of the combined company. No material transactions occurred between Green Plains and Global during the periods presented in the unaudited pro forma condensed combined financial statements that would need to be eliminated.

The unaudited pro forma condensed combined financial information has been prepared using the acquisition method of accounting under existing United States generally accepted accounting principles (“GAAP”), which is subject to change and interpretation. Green Plains has been treated as the acquirer in the Merger for accounting purposes. The acquisition accounting is dependent upon certain valuations and other studies that have yet to commence or progress to a stage where there is sufficient information for a definitive measurement. Accordingly, the pro forma adjustments included herein are preliminary and have been made solely for the purpose of providing unaudited pro forma condensed combined financial information, and may be revised as additional information becomes available and as additional analyses are performed. Differences between the preliminary estimates reflected in these unaudited pro forma condensed combined financial

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statements and the final acquisition accounting will likely occur, and these differences could have a material impact on the accompanying unaudited pro forma condensed combined financial statements and the combined company’s future results of operations and financial position.

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UNAUDITED PRO FORMA CONDENSED COMBINED BALANCE SHEET

AS OF JUNE 30, 2010

(in thousands)

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See accompanying Notes to Unaudited Pro Forma Condensed Combined Financial Statements

for detail of pro forma adjustments.

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UNAUDITED PRO FORMA CONDENSED COMBINED STATEMENT OF OPERATIONS

FOR THE FISCAL YEAR ENDED DECEMBER 31, 2009

(in thousands, except per share amounts)

See accompanying Notes to Unaudited Pro Forma Condensed Combined Financial Statements

for detail of pro forma adjustments.

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UNAUDITED PRO FORMA CONDENSED COMBINED STATEMENT OF OPERATIONS

FOR THE SIX MONTHS ENDED JUNE 30, 2010

(in thousands, except per share amounts)

See accompanying Notes to Unaudited Pro Forma Condensed Combined Financial Statements

for detail of pro forma adjustments.

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NOTES TO UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS

1. DESCRIPTION OF TRANSACTION AND BASIS OF PRESENTATION

On October 22, 2010 (the Merger Date), the Company completed its Merger with Global. Under the purchase method of accounting, in accordance with GAAP, the assets and liabilities of Global are recorded as of the Merger Date at their respective fair values and combined with the Company’s assets and liabilities.

The unaudited pro forma condensed combined financial information was prepared under existing GAAP, which is subject to change and interpretation. The accompanying unaudited pro forma condensed combined financial statements are provided for illustrative purposes only and do not purport to represent what the actual consolidated results of operations or the consolidated financial position of Green Plains would have been had the Merger with Global occurred on the dates assumed, nor are they necessarily indicative of future consolidated results of operations or consolidated financial position. The unaudited pro forma condensed combined financial statements do not reflect cost savings, operating synergies or revenue enhancements anticipated to result from the Merger with Global, the costs to integrate their operations or the costs necessary to achieve these cost savings, operating synergies or revenue enhancements. Management fees and other costs related to corporate selling, general, and administrative expenses incurred by Global of $7.8 million and $3.7 million for the year ended December 31, 2009 and the six months ended June 30, 2010, respectively, have not be adjusted in the pro forma financial statements; however, most of these expenses are not expected to be incurred by Green Plains after the Merger.

The unaudited pro forma condensed combined financial statements should be read in conjunction with the separate historical consolidated financial statements and accompanying notes of Green Plains filed with the SEC and the Global financial statements filed in the Current Report on Form 8-K, dated October 22, 2010. Certain reclassifications have been made to the historical presentation of Global’s financial statements to conform to the presentation used in the unaudited pro forma condensed combined balance sheet and statements of operations.

As of the date of the Current Report on Form 8-K/A to which these financial statements are filed, Green Plains has not performed the detailed valuation studies necessary to arrive at the required estimates of the fair value of Global’s assets to be acquired and liabilities to be assumed and the related allocations of purchase price, nor has it identified the adjustments necessary, if any, to conform Global’s accounting policies to Green Plains’ accounting policies. However, as indicated in Note 3 to the unaudited pro forma condensed combined financial statements, Green Plains has made certain adjustments to the June 30, 2010 historical book values of Global’s assets and liabilities to reflect certain preliminary estimates of the fair values necessary to prepare the unaudited pro forma condensed combined financial statements. Any excess purchase price over the estimated fair values of Global’s net assets has been recorded as goodwill. Actual results may differ from these unaudited pro forma condensed combined financial statements once Green Plains has determined the final purchase price for Global, has completed the valuation studies necessary to finalize the required purchase price allocations and identified any necessary conforming accounting changes. The determination of the final purchase price allocations can be highly subjective, and it is possible that other professionals applying reasonable judgment to the same facts and circumstances could develop and support a range of alternative estimated amounts.

2. PRELIMINARY PURCHASE PRICE ALLOCATION

For the purposes of this pro forma analysis, the purchase price has been preliminarily allocated based on an estimate of the fair value of assets and liabilities acquired as of the Merger Date. The determination of estimated fair value requires management to make significant estimates and assumptions.

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The above allocation is preliminary with the final allocation to be based upon the October 22, 2010 balance sheet, the date of closing. The estimated working capital adjustment of $2.4 million represents the amount that Green Plains believes will be paid from an escrow account for the change in working capital, as defined in the Merger Agreement, from June 30, 2010 to the Merger Date. The Merger Agreement includes procedures for Green Plains and Global to determine the working capital adjustment. The working capital adjustment reflected above is based upon Green Plains’ estimation of the working capital adjustment of Global; however, the final determination of the working capital adjustment, in accordance with the Merger Agreement, may change materially.

The Company’s preliminary allocation to goodwill as of October 22, 2010 is $8.3 million, which differs from the above goodwill allocation as of June 30, 2010 due primarily to the net loss incurred by Global between July 1, 2010 and October 22, 2010 of $8.4 million.

3. PRO FORMA ADJUSTMENTS

Adjustments under the heading “Pro Forma Adjustments” in the accompanying pro forma condensed combined financial statements represent the following:

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The related impact on the pro forma condensed combined statements of operations has not been reflected as pro forma adjustments as the entire amount will be recorded in the statements of operations within the twelve months following the Merger.

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