Epirus Demonstrates High-Power Microwave System Against Fiber-Optic Guided Drones

Epirus has shared an update. The company reported a December 2025 live-fire technology demonstration of its Leonidas high-power microwave (HPM) platform, showing video evidence of the system defeating fiber-optic–controlled unmanned aerial systems (UAS). According to Epirus, this is the first known instance of electromagnetic interference being used to neutralize fiber-optic guided drones, which are typically resistant to legacy electronic warfare counter-UAS measures and have become more prevalent in recent conflicts such as in Ukraine. CEO Andy Lowery positioned Leonidas as a solution to a growing operational gap in counter-drone defenses.

For investors, this development underscores Epirus’s progress in validating its core HPM technology in a realistic threat environment, potentially strengthening its competitive position in the rapidly expanding counter-UAS and defense electronics markets. Demonstrated effectiveness against emerging drone tactics could enhance the company’s attractiveness to military and government customers, supporting future contract awards and revenue growth prospects. Successful operational tests like this one can also improve Epirus’s standing relative to traditional kinetic and electronic countermeasure providers, positioning the company to benefit from increased defense spending on advanced counter-drone systems. However, the ultimate financial impact will depend on follow-on procurement decisions, the pace of adoption by allied defense forces, and Epirus’s ability to scale production and maintain technological differentiation in a crowded defense technology landscape.