EXHIBIT 21.1 Subsidiaries 1. American Superconductor Europe GmbH (*) - established in Germany 2. ASC Holding Corp. (*) - incorporated in Delaware 3. ASC Securities Corp. (**) - incorporated in Massachusetts 4. Superconductivity, Inc. (*) - incorporated in Delaware * Wholly owned subsidiary of American Superconductor Corporation ** Wholly owned subsidiary of ASC Holding Corp.