EMCOR Group Inc is a specialty contractor in the United States and a provider of electrical and mechanical construction and facilities services, building services, and industrial services. Its services are provided to a broad range of commercial, technology, manufacturing, industrial, healthcare, utility, and institutional customers through approximately 100 operating subsidiaries. The company's operating subsidiaries are organized into reportable segments: United States electrical construction and facilities services, United States mechanical construction and facilities services, United States building services, United States industrial services, and United Kingdom building services. Geographically the majority of revenue is generated from the United States.