AMSC Announces Pricing of Public Offering of Common Stock.

WESTBOROUGH, Mass. -- American Superconductor Corporation (NASDAQ: AMSC) today announced the pricing of an underwritten public offering of 4,700,000 shares of its common stock at a price to the public of $21.25 per share, before underwriting discounts and commissions. AMSC also granted the underwriters a 30-day option to purchase up to an additional 705,000 shares of common stock. All of the shares are being offered by AMSC. The offering is expected to close on or about July 25, 2007, subject to customary closing conditions.

Morgan Stanley & Co. Incorporated is acting as the book runner for the offering. Jefferies & Company, Inc. and Needham & Company, LLC are acting as co-managers for the offering.

AMSC filed a registration statement, which has been declared effective by the Securities and Exchange Commission (SEC). A copy of the final prospectus relating to the offering may be obtained by contacting Morgan Stanley & Co. Incorporated, 180 Varick Street, 2nd Floor, New York, New York 10014, 866-718-1649, or by e-mailing [e-mail].

This press release shall not constitute an offer to sell, or the solicitation of an offer to buy, any of the securities, nor shall there be any sale of these securities, in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state.

About AMSC

AMSC (American Superconductor Corporation - NASDAQ: AMSC) is a leading energy technologies company, offering an array of solutions based on two proprietary technologies: programmable power electronic converters and high temperature superconductor (HTS) wires. The company's products, services and system-level solutions enable cleaner, more efficient and more reliable generation, delivery and use of electric power. AMSC is a leader in alternative energy, offering grid interconnection solutions as well as licensed wind energy designs and electrical systems.

Any statements in this release about future expectations, plans and prospects for the company, including our expectations regarding the future financial performance of the company and other statements containing the words "believes," "anticipates," "plans," "expects," "will" and similar expressions, constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. There are a number of important factors that could cause actual results to differ materially from those indicated by such forward-looking statements. Such factors include: uncertainties regarding the company's ability to obtain anticipated funding from corporate and government contracts, to successfully develop, manufacture and market commercial products, and to secure anticipated orders; the risk that a robust market may not develop for the company's products; the risk that strategic alliances and other contracts may be terminated; the risk that certain technologies utilized by the company will infringe intellectual property rights of others; and the competition encountered by the company. Reference is made to these and other factors discussed in the "Risk Factors" section of the company's most recent quarterly or annual report filed with the Securities and Exchange Commission. In addition, the forward-looking statements included in this press release represent the company's views as of the date of this release. While the company anticipates that subsequent events and developments may cause the company's views to change, the company specifically disclaims any obligation to update these forward-looking statements. These forward-looking statements should not be relied upon as representing the company's views as of any date subsequent to the date this press release is issued.