Founded in 1937, the American company Staco Energy Products is a leading manufacturer of transformers and related modules and components. Since its inception, the company has been a pioneer in the development of standard and specialized variable transformers, uninterruptible power supplies, active harmonic filters. The company's product range includes: single-phase and three-phase UPS, voltage regulators, battery monitoring devices, variable transformers, service programs.

The company's products are certified according to the ISO 9001:2000 standard.