Piller Power Systems is a Philadelphia-based manufacturer of uninterruptible power supplies (UPS) and power stabilisation equipment for critical applications. They supply power protection and generation solutions to sectors including data centres, manufacturing, banking, healthcare, energy and aviation, with products ranging from small modular units to systems delivering up to 50 megawatts. They also offer energy storage systems using flywheels and batteries. Piller suits referrals from businesses needing reliable backup power for mission-critical equipment, and would naturally refer clients onwards for installation, grid connection or broader electrical infrastructure work.