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Active Power

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Active Power

Active Power designs and manufactures battery-free flywheel Uninterruptible Power Supply (UPS) systems and energy storage products for mission-critical power applications worldwide from its headquarters and manufacturing plant in Austin TX.

Active Power is a member of the Piller Power Systems group.



Active Power’s Single Module System Flywheel UPS is the perfect combination of total cost of ownership, reliability, and sustainability for any mission critical application. Designed with highly predictable, battery-free energy storage, the Single Module System offers unmatched total cost of ownership for high availability organizations.

  • 300kW – 480V @ 60 Hz
  • 300kW – 380 / 400 / 415V @ 50Hz
  • Up to 98% efficient
  • Half the space of legacy battery based UPS


Active Power’s Modular UPS System offers a wide range of modular and redundant back-up power systems from 300kW to 2400kW.

The built-in flywheel energy storage takes up less than half the footprint of battery based systems, delivers efficiency up to 98% and lowers total cost of ownership by up to 40% over the life of the product. This field proven technology is based on a highly fault tolerant IGBT architecture designed to protect all critical loads, such as data centers, industrial processes and healthcare applications.


Active Power’s CLEANSOURCE® HD UPS delivers 40% TCO savings, is 12 times less likely to fail, and reduces your impact on the environment by 90%. This flywheel UPS is a perfect fit for today’s mission critical applications in data centers, health care facilities, and industrial and manufacturing sites.

  • Stores 10.2 MJ of energy
  • Up to 1 minute of runtime (load dependent)
  • Wide ambient temperature range 32oF to 104oF and high density
  • 625 kW – 380/400/415V @ 50Hz
  • 675 kW – 480V @ 60Hz
  • Up to 98% efficient
  • Half the space of legacy battery based UPS


1.2MW of Modular UPS in a Standard ISO Container

The Active Power POWERHOUSE is a factory-built and factory-tested enclosed Uninterruptible Power Supply (UPS) system designed for all types of environments. With its simple and standardized design, rapid deployment, low cost and minimal onsite management, the POWERHOUSE offers huge savings and peace of mind.

  • 300KW UPS building blocks
  • Parallel up to 2400KW
  • Up to 98% efficient
  • Half the space of legacy battery based UPS
  • Redundant UPS fans and control power
  • High efficiency, redundant HVAC
  • Fire detection and optional gas fire suppressant
  • 32oF to 122oF operating temperature