Exhibit 99.1 AMSC Reports Second Quarter Fiscal Year 2024 Financial Results and Provides Business Outlook Financial Highlights: • Reported Second Quarter Net Income of Nearly $5 Million • Generated Nearly $13 Million of Operating Cash Flow During the Quarter • Increased Revenue by 60% Year Over Year to Above $54 Million Company to host conference call tomorrow, October 31, at 10:00 am ET Ayer, MA – October 30, 2024 – AMSC (Nasdaq: AMSC), a leading system provider of megawatt-scale power resiliency solutions ...