WASHINGTON, — BAE Systems has unveiled a new High Power Microwave (HPM) weapon system at the Association of the United States Army (AUSA) 2026 exhibition. The directed-energy system is designed to disable or destroy the electronics of airborne threats, including drones, using focused electromagnetic energy without firing physical projectiles.
Designed to Counter Drone Swarms
The HPM system is designed to address the growing challenge of mass drone attacks, where conventional interceptor missiles can face limited ammunition stocks. Instead of using physical ammunition, the system directs high-power microwave energy at airborne targets.
BAE Systems describes the system as a “bottomless magazine” because it can continue engaging targets as long as it has a continuous electrical power supply.
Commercial Components and Testing
BAE Systems said approximately 99% of the HPM system uses commercial off-the-shelf (COTS) components. The company says using established American commercial supply chains can reduce production lead times and manufacturing costs while making maintenance easier.
The system has reached Technology Readiness Level 6 (TRL 6). BAE Systems said it has fired billions of microwave pulses during outdoor range testing to document their effects on airborne targets.
The system's architecture includes controllers, power systems and user interfaces that allow operators to change frequency bands without requiring a new research and development effort.
Jason Casciotti, vice president of BAE Systems' Weapon Systems product line, said, “The threat environment is evolving faster than traditional procurement cycles can keep up with.” He said the company is using a validated technical core and resilient supply chain to provide a system that can maintain defense as long as power is available.
Four Deployment Configurations
The HPM system uses a modular array, allowing its size and power output to be adjusted for different operating environments. BAE Systems has outlined four configurations:
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Strategic: A permanent system connected to the local power grid for defense of critical fixed installations.
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Towed: A transportable system powered by heavy-duty generators for forward or contested locations.
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Maneuver: A combat-vehicle version that uses the vehicle's power supply to protect mobile forces.
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Maritime: A ship-based version designed to use the vessel's onboard power system.
Part of a Layered Defense
BAE Systems said the HPM system is not intended to replace traditional kinetic weapons. Instead, it is designed to operate as part of a layered air-defense system.
At AUSA 2026, the company also unveiled the Multi-Domain Artillery Cannon System (MDACS), which fires precision-guided kinetic munitions. Under the layered approach, conventional missile and kinetic systems can be used against long-range, high-value threats requiring physical destruction, while the HPM system can provide another layer against large numbers of smaller drones.
BAE Systems has confirmed the HPM system's testing and TRL 6 status, but has not disclosed its maximum engagement range, exact cost per shot, or a specific timeline for fielding the system with active military units.
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