T&D Companies – D

Our Mission

To ensure that all people globally have reliable, safe and secure energy in a sustainable world.

About Us

Founded in 1920, Doble Engineering Company ensures reliable, safe and secure power for all. We do this by providing comprehensive diagnostics and engineering expertise for the energy industry.

Doble is part of the Utility...

Did you know 1 out of every 200 transformers experiences failure each year? The safety and cost risks of an unexpected failure can be catastrophic. Dynamic Ratings products and services provide real-time data to help you make smart asset management decisions. Online monitors give you the confidence to extend the...