Staco Energy Products


Staco Emergency Lighting Inverters

Our UL-924 Emergency Lighting products offer a wide range of applications from single phase to small and medium 3 phase markets. These products can be configured for always on or always off applications, supplying energy for the emergency lighting during critical moments. Each product can be configured as a standard UL-924 or as an UL-924 OUST product providing energy for 90 minutes or as desired by the end user.

Keeping You Connected For Over 75 Years

Staco Energy Products Company is one of the longest lasting innovators of Power Quality and Voltage Control technologies in the world.

In an industry where companies come and go, Staco Energy continues to provide the reliability and continuity you need. We support products we made three months ago, we support products we made thirty years ago. And yes, they are still in use all over the world.


Staco Energy is the oldest and largest manufacturer of variable transformers in the United States. The first Staco Energy variable transformer was manufactured in Dayton, Ohio in 1937.

Since then, Staco Energy Products Company has pioneered improvements in design and construction of equipment for industrial, commercial, medical and military applications:

  • Standard and specialized variable transformers
  • AC voltage control
  • Power conditioning
  • UPS
  • Power Factor Correction
  • Active Harmonic┬áMitigation