Doble Engineering Company

Founded nearly a century ago, Doble’s products and services continue to evolve, but its commitment to bring the utility industry together – and move it forward, has never wavered.

Humble Beginnings

Doble Engineering Company was founded in 1920 by Frank C. Doble, a graduate of Tufts University. Soon after graduation, Frank rented out space at the university and began to develop diagnostic test equipment for the young electric utility industry. Doble’s first breakthrough was the Portable Insulation Test, a method to measure the health of bushings before they failed.

A History of Innovation

As Doble expanded its work with more utility companies, it became clear that there was an immense opportunity for increased collaboration. In 1934 Doble hosted its first customer conference, giving utilities an arena to exchange ideas with each other and Doble, problem solve challenges and share the results of the tests they ran with Doble equipment. Through this feedback and collaboration, Doble has become a true partner for the power industry’s testing needs, providing lab services, consulting, cutting-edge software and gold-standard hardware products that make the industry safer, smarter and more efficient.

Transforming an Industry

Today, Doble offers a comprehensive and extensive scope of diagnostic products and services to test and maintain transformers, bushings, protective relays, circuit breakers, rotating machines and more. With more than 400 employees and 5500 customers, offices in eleven countries, and 55 million points of test data for more than 1 million different electric apparatus, Doble is dedicated to helping the global power industry overcome its challenges, no matter how big or how small.


Corporate Overview

Doble Engineering Company

Doble Engineering Company