Exhibit 99.1

Pacific Ethanol Reports First Quarter 2015 Results

Sacramento, CA, May 11, 2015 – Pacific Ethanol, Inc. (NASDAQ: PEIX), the leading producer and marketer of low-carbon renewable fuels in the Western United States, reported its financial results for the three-months ended March 31, 2015.

Neil Koehler, the company’s president and CEO, stated: “During the first quarter of 2015, the ethanol industry was negatively impacted by lower production margins resulting from high ethanol inventory levels and volatile energy markets. As a result, we reported a first quarter 2015 net loss of $4.7 million. We have seen a solid improvement in margins so far in the second quarter, as US ethanol production has moderated while the demand for transportation fuels is strengthening. Looking forward in 2015, we are optimistic about the financial performance of the company and the industry. We began producing corn oil at our Madera facility and are close to initiating corn oil production at our Columbia plant, which will further diversify our revenues and contribute to overall margins.

“2015 is expected to be a transformational year for Pacific Ethanol as we extend our market reach through our planned merger with Aventine Renewable Energy and amplify our destination market strategy with key facilities in origin markets. In addition, as the fifth largest producer and marketer of ethanol in the United States post-merger, I am confident we will have the resources and strategy in place to drive profitable growth for years to come,” concluded Koehler.

Financial Results for the Three Months Ended March 31, 2015

Net sales were $206.2 million for the first quarter of 2015, a decrease of 19% when compared to $254.5 million for the first quarter of 2014. The decline in net sales was attributable to a decrease in the company’s average sales price per gallon of ethanol, partially offset by an increase in production gallons sold reflecting the restart of production at the company’s Madera facility in the second quarter of 2014.

Gross loss was $1.0 million for the first quarter of 2015, compared to a gross profit of $38.5 million in the first quarter of 2014. The decline in gross profit was driven by significantly reduced production margins compared to the prior year resulting from lower ethanol prices.

Selling, general and administrative (“SG&A”) expenses were $4.9 million in the first quarter of 2015, compared to $3.7 million in the first quarter of 2014. SG&A expenses in the first quarter of 2015 include approximately $1.0 million in merger-related costs.

Operating loss for the first quarter of 2015 was $5.9 million, compared to operating income of $34.9 million for the first quarter of 2014.

Fair value adjustments for the first quarter of 2015 were $0.2 million, compared to $35.8 million for the first quarter of 2014.

Interest expense, net for the first quarter of 2015 was $1.0 million, compared to $4.4 million for the first quarter of 2014. The lower interest expense is related to a reduction in the company’s average outstanding debt balances.

Provision (benefit) for income taxes for the first quarter of 2015 was a tax benefit of $2.7 million, compared to an expense of $3.3 million for the first quarter of 2014.

Net loss available to common stockholders for the first quarter of 2015 was $4.7 million, compared to $11.1 million for the first quarter of 2014.

Adjusted EBITDA declined to a loss of $2.7 million for the first quarter of 2015, compared to Adjusted EBITDA of $35.4 million for the first quarter of 2014.

Bryon McGregor, the company’s CFO, stated, “Cash and cash equivalents were $42.3 million at March 31, 2015, compared to $62.1 million at December 31, 2014. The reduction in cash reflects debt payments of $17.5 million and capital expenditures of $8.2 million, partially offset by cash flows from operations of $7.3 million. Going forward, we will continue to balance our debt and cash balances as we look to reduce our overall borrowing costs while exploring options to consolidate and refinance our total debt position after closing the Aventine merger.”

Q1 Results Conference Call

Management will host a conference call at 8:00 a.m. PT/11:00 a.m. ET on May 12, 2015.

Neil Koehler, Chief Executive Officer, and Bryon McGregor, Chief Financial Officer, will deliver prepared remarks followed by a question and answer session. The webcast for the call can be accessed from Pacific Ethanol’s website at www.pacificethanol.com. Alternatively, you may dial the following number up to ten minutes prior to the scheduled conference call time: (877) 847-6066. International callers should dial 00-1-(970) 315-0267. The pass code will be 32277644#.

If you are unable to participate on the live call, the webcast will be archived for replay on Pacific Ethanol’s website for one year. In addition, a telephonic replay will be available at 2:00 p.m. Eastern Time on Tuesday, May 12, 2015 through 11:59 p.m. Eastern Time on Tuesday, May 19, 2015. To access the replay, please dial (855) 859-2056. International callers should dial 00-1-(404) 537-3406. The pass code will be 32277644#.

Use of Non-GAAP Measures

Management believes that certain financial measures not in accordance with generally accepted accounting principles (“GAAP”) are useful measures of operations. The company defines Adjusted Net Earnings as unaudited earnings before fair value adjustments and warrant inducements and gain (loss) on extinguishments of debt. The company defines Adjusted EBITDA as unaudited net income (loss) attributed to Pacific Ethanol before interest, provision for income taxes, depreciation and amortization, fair value adjustments and warrant inducements and noncash gain (loss) on extinguishments of debt. Tables are provided at the end of this release that provide a reconciliation of Adjusted Net Earnings and Adjusted EBITDA to their most directly comparable GAAP measures. Management provides these non-GAAP measures so that investors will have the same financial information that management uses, which may assist investors in properly assessing the company’s performance on a period-over-period basis. Adjusted Net Earnings and Adjusted EBITDA are not measures of financial performance under GAAP, and should not be considered alternatives to net income (loss) or any other measure of performance under GAAP, or to cash flows from operating, investing or financing activities as an indicator of cash flows or as a measure of liquidity. Adjusted Net Earnings and Adjusted EBITDA have limitations as analytical tools and you should not consider these measures in isolation or as a substitute for analysis of the company’s results as reported under GAAP.

About Pacific Ethanol, Inc.

Pacific Ethanol, Inc. (PEIX) is the leading producer and marketer of low-carbon renewable fuels in the Western United States. Pacific Ethanol also sells co-products, including wet distillers grain ("WDG"), a nutritional animal feed. Serving integrated oil companies and gasoline marketers who blend ethanol into gasoline, Pacific Ethanol provides transportation, storage and delivery of ethanol through third-party service providers in the Western United States, primarily in California, Arizona, Nevada, Utah, Oregon, Colorado, Idaho and Washington. Pacific Ethanol has a 96% ownership interest in PE Op Co., the owner of four ethanol production facilities. Pacific Ethanol operates and manages the four ethanol production facilities, which have a combined annual production capacity of 200 million gallons. These operating facilities are located in Boardman, Oregon, Burley, Idaho, Stockton, California and Madera, California. The facilities are near their respective fuel and feed customers, offering significant timing, transportation cost and logistical advantages. Pacific Ethanol's subsidiary, Kinergy Marketing LLC, markets ethanol from Pacific Ethanol's managed plants and from other third-party production facilities, and another subsidiary, Pacific Ag. Products, LLC, markets WDG. For more information please visit www.pacificethanol.com.

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995

Statements contained in this communication that refer to Pacific Ethanol’s estimated or anticipated future results or other non-historical expressions of fact are forward-looking statements that reflect Pacific Ethanol’s current perspective of existing trends and information as of the date of this communication. Forward looking statements generally will be accompanied by words such as “anticipate,” “believe,” “plan,” “could,” “should,” “estimate,” “expect,” “forecast,” “outlook,” “guidance,” “intend,” “may,” “might,” “will,” “possible,” “potential,” “predict,” “project,” or other similar words, phrases or expressions. Such forward-looking statements include, but are not limited to, the timing and effects of corn oil production; the ability of Pacific Ethanol to successfully balance its debt and cash balances and refinance its total debt, including Aventine’s debt; statements about the benefits of the Aventine merger, including future financial and operating results, Pacific Ethanol’s or Aventine’s plans, objectives, expectations and intentions and the expected timing of completion of the transaction. It is important to note that Pacific Ethanol’s goals and expectations are not predictions of actual performance. Actual results may differ materially from Pacific Ethanol’s current expectations depending upon a number of factors affecting Pacific Ethanol’s business, Aventine’s business and risks associated with merger transactions. These factors include, among others, adverse economic and market conditions, including for ethanol and its co-products; raw material costs, including ethanol production input costs; changes in governmental regulations and policies; and insufficient capital resources. These factors also include, among others, the inherent uncertainty associated with financial projections; restructuring in connection with, and successful closing of, the Aventine merger; subsequent integration of Aventine and the ability to recognize the anticipated synergies and benefits of the Aventine merger; the ability to obtain required regulatory approvals for the transaction (including the approval of antitrust authorities necessary to complete the acquisition), the timing of obtaining such approvals and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the transaction; the ability to obtain the requisite Pacific Ethanol and Aventine stockholder approvals; the risk that a condition to closing the Aventine merger may not be satisfied on a timely basis or at all; the failure of the proposed transaction to close for any other reason; risks relating to the value of the Pacific Ethanol shares to be issued in the transaction; the anticipated size of the markets and continued demand for Pacific Ethanol’s and Aventine’s products; the impact of competitive products and pricing; the risks and uncertainties normally incident to the ethanol production and marketing industries; the difficulty of predicting the timing or outcome of pending or future litigation or government investigations; changes in generally accepted accounting principles; costs and efforts to defend or enforce intellectual property rights; successful compliance with governmental regulations applicable to Pacific Ethanol’s and Aventine’s facilities, products and/or businesses; changes in the laws and regulations; changes in tax laws or interpretations that could increase Pacific Ethanol’s consolidated tax liabilities; the loss of key senior management or staff; and such other risks and uncertainties detailed in Pacific Ethanol’s periodic public filings with the Securities and Exchange Commission, including but not limited to Pacific Ethanol’s “Risk Factors” section contained in Pacific Ethanol’s Form 10-K/A filed with the Securities and Exchange Commission on April 13, 2015 and from time to time in Pacific Ethanol’s other investor communications. Except as expressly required by law, Pacific Ethanol disclaims any intent or obligation to update or revise these forward-looking statements.

Important Information for Investors and Stockholders

This communication is being made partially in respect of the proposed merger between Pacific Ethanol, Inc. and Aventine Renewable Energy Holdings, Inc. In connection with the proposed merger, Pacific Ethanol has filed with the Securities and Exchange Commission a registration statement on Form S-4 that includes a definitive joint proxy statement of Pacific Ethanol and Aventine that also constitutes a prospectus of Pacific Ethanol. The definitive joint proxy statement/prospectus will be delivered to the stockholders of Pacific Ethanol and Aventine.

INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE DEFINITIVE JOINT PROXY STATEMENT/PROSPECTUS AND OTHER DOCUMENTS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION CAREFULLY AND IN THEIR ENTIRETY BECAUSE THEY CONTAIN IMPORTANT INFORMATION.

This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval.

Investors and security holders may obtain free copies of the registration statement and the definitive joint proxy statement/prospectus and other documents filed with the Securities and Exchange Commission by Pacific Ethanol through the website maintained by the Securities and Exchange Commission at http://www.sec.gov. Copies of the documents filed with the Securities and Exchange Commission by Pacific Ethanol are also available free of charge on Pacific Ethanol’s internet website at www.pacificethanol.com or by contacting Pacific Ethanol’s investor relations agency, LHA, at (415) 433-3777.

Pacific Ethanol, Aventine, their respective directors and certain of their executive officers and employees may be considered participants in the solicitation of proxies in connection with the proposed transaction. Information about the directors and executive officers of Pacific Ethanol is set forth in the definitive joint proxy statement/prospectus. Additional information regarding the participants in the proxy solicitations and a description of their direct and indirect interests, by security holdings or otherwise, is contained in the definitive joint proxy statement/prospectus filed with the above-referenced registration statement on Form S-4.

A more complete description is available in the registration statement and the definitive joint proxy statement/prospectus.

- Tables Follow -

PACIFIC ETHANOL, INC.
CONSOLIDATED STATEMENTS OF OPERATIONS

(unaudited)

(in thousands, except per share data)

PACIFIC ETHANOL, INC.
CONSOLIDATED BALANCE SHEETS
(unaudited)

(in thousands, except par value)

PACIFIC ETHANOL, INC.
CONSOLIDATED BALANCE SHEETS (CONTINUED)
(unaudited)

(in thousands, except par value)

Reconciliation of Adjusted Net Earnings to Net Income (Loss)

Reconciliation of Adjusted EBITDA to Net Income (Loss)

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* Adjusted for noncontrolling interests.

Commodity Price Performance

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