Press Releases

<br />- World's Largest High Temperature Superconductor Wire Order to Meet Demand for Superconductor Power Cables in Korea and the U.S.
<br />- Shipments of Amperium Wire to LS Cable to Begin in 2012

- New Brand Name Launched for the Company's Ultra-Thin, High Amperage Superconductor Wire
- High Capacity "Optical Fiber of Power" to be Utilized in Wide Range of Electrical Systems, Including Power Cables and SeaTitan^™ Wind Turbines
- Company Migrating to Higher Volume Wire Production Methodology to Meet Increased Customer Demand

- Inox to Initiate Volume Production of 2 Megawatt Wind Turbines to Address Indian Wind Energy Market - India's Installed Base of Wind Power Expected to Double in Five Years

-AMSC and Dow Venture Capital Finance Production Scale-up of Advanced Wind Turbine Blades
-State of Louisiana Provides Incentive Package Worth up to $30 Million for New Blade Dynamics Manufacturing Operation at NASA Facilities in New Orleans
-AMSC's Customers to Have First Access to Advanced Blade Designs

Presentation to be Webcast Live at 12:30 p.m. Eastern Time

Presentation to be Webcast Live at 10:20 a.m. Eastern Time

- First Quarter Revenues Increased 33 Percent Year Over Year to a Record $97 Million

- Earnings More Than Doubled Year Over Year

- Revenue and Earnings Forecasts Increased for Full Year Fiscal 2010

Company to Host Conference Call at 10:00 a.m. ET on July 29

- Company Reaches Milestone by Shipping Enough Product for 15,000 Megawatts of Wind Power - Thousands of Wind Turbines Currently Operated by AMSC's Electrical Components and Control Systems - More Than 70 Wind Farms Interconnected to Power Grids by D-VAR(R) Systems in Asia, Europe and North America

- Team Developing 5 MW Wind Turbine for Rapidly Growing Global Offshore Market - HHI to Begin 5 MW Wind Turbine Production for the Offshore Market in 2011

- Companies Sign Agreement to Develop a Range of New Multi-Megawatt Advanced Wind Turbines for the Global Onshore and Offshore Markets

Presentations to be Webcast Live Beginning at 9:00 a.m. ET

-- Thousands of Sets of 1.5 Megawatt Wind Turbine Core Electrical Components to be Shipped Annually by AMSC to World's Third Largest Wind Turbine Manufacturer -- Shipments Under New 30-Month Contract to Commence in Early 2011

-- Fourth Quarter Revenues Increased 43 Percent Year Over Year to $87.6 Million

-- Full Year Revenues Increased 73 Percent Year Over Year to $316 Million

-- Fiscal 2009 Gross Margin Grew 800 Basis Points Year Over Year to 36.4 Percent

-- First Full Fiscal Year of Profitability Reported

Company to Host Conference Call at 10:00 a.m. ET on May 13

Company to Host Conference Call at 10:00 a.m. ET on May 14

HHI Continues Production Ramp of 1.65 Megawatt Wind Turbines; Company on Track to Initiate Production of 2 Megawatt Wind Turbines in 2010

- Ghodawat Initiates Production of 1.65 Megawatt Wind Turbines - Company Targets 25 Percent Share of India's Wind Market - Sixth Customer to Place a Production Order With AMSC Within the Past Year

Vestas Chooses AMSC's Dynamic Grid Management Solution to Enable Steady, Reliable Power Flow from Australia's Largest Wind Farm;
D-VAR(R) Solutions Connecting More Than One-Third of Australia's Wind Power to the Power Grid

Companies Jointly Seeking More Than 50 Kilometers of Commercial Superconductor Power Cable Deployments Over the Next Five Years; LS Cable Pursuing International Supply Contracts for AC and DC Superconductor Power Cables