Doble Engineering Company is a global provider of test and diagnostic solutions for high-voltage electrical power equipment. The company's products and services help utilities, IPPs and industrial operators assess the condition, performance and safety of transformers, circuit breakers, cables and rotating machines. Doble's diagnostic testing tools are used by electrical utilities and asset managers across Africa to extend equipment life, reduce failure risk and optimise maintenance schedules. The company was a Silver Sponsor at Enlit Africa 2025.