TET ESTEL designs and manufactures a comprehensive range of ground power solutions for aviation. Its portfolio includes frequency converters, airfield rectifiers, combined power units, and both diesel-powered and battery-powered ground power units (GPUs), fully compatible with all types of fixed-wing aircraft and helicopters.

All equipment is developed and manufactured in compliance with internationally recognized quality standards, ensuring outstanding performance, operational safety, and long service life under demanding airport conditions. Advanced engineering, strict quality control, and modern production technologies enable TET ESTEL to deliver reliable, efficient, and sustainable solutions that meet the evolving requirements of the global aviation industry.

Today, TET ESTEL products are successfully deployed at airports, maintenance facilities around the world. By combining decades of experience with innovative technologies, the company continues to support safe, efficient, and uninterrupted aircraft ground operations while building long-term partnerships with customers worldwide.