Active Power, a division of Piller Power Systems Inc., is a leading producer of kinetic energy storage systems. Our flywheel technology provides permanent energy storage that helps solve customer problems and provides lower total cost of ownership, higher reliability, and more sustainable solutions.

In November 2016 Piller Power Systems Inc, the US subsidiary of Piller Group GmbH, acquired the business and assets of Active Power Inc. Piller Group GmbH is a division of the UK based engineering and industrial group, Langley Holdings PLC.

Active power is a global leader in flywheel energy and power technology for mission critical applications.

We are driven by Motion : the motion of the spinning flywheel infuses our business,storing energy to support our customer's applications and pushing our passionate team to provide ever more ingenious solutions and services.

Active Power solves customer problems for data centers, health care, and industrial and manufacturing. Our solutions deliver 40% lower total cost of ownership, are 12 times less likely to fail, and reduce environmental impact by 90%. These profound benefits enable our customers to achieve their budget, availability, and sustainability goals.

The elegance of the flywheel technology is matched by the passion of the Active Power team. We are Driven by Motion: the motion of the spinning flywheel infuses our business, pushing our team to provide ever more ingenious solutions and services.

The best demonstration of the value we offer is evidenced by our growing marquee customer base that places trust in Active Power and our technology to protect their most mission critical operations. More than 5,000 Active Power flywheels have been deployed in over 50 countries, delivering more than 900 megawatts of critical power protection. Leaders across multiple industries trust that we’ll always be there with clean, reliable, cost effective solutions.