EMCOR Group, Inc. provides electrical and mechanical construction, and facilities services primarily to commercial, industrial, utility, and institutional customers in the United States, the United Kingdom, and internationally. The company offers various electrical and mechanical systems, including electric power transmission and distribution systems, such as power cables, conduits, distribution panels, transformers, generators, uninterruptible power supply systems, and related switch gear and controls; premises electrical and lighting systems, including fixtures and controls; low-voltage systems comprising fire alarms, and security and process control systems; voice and data communications systems, including fiber-optic and low-voltage cabling systems; and roadway and transit lighting and fiber-optic lines. It also provides heating, ventilation, air conditioning, refrigeration, and clean-room process ventilation systems; fire protection systems; plumbing, processing, and piping systems; controls and filtration systems; water and wastewater treatment systems; central plant heating and cooling systems; cranes and rigging; millwrighting; and steel fabrication, erection, and welding systems. In addition, the company offers facilities services comprising industrial maintenance and services; outage services to utilities and industrial plants; commercial and government site-based operations and maintenance; military base operations support; mobile mechanical maintenance and services; floor care and janitorial; landscaping, lot sweeping, and snow removal; facilities and vendor management; call center; building systems installation and support; and technical consulting and diagnostic services. Further, it provides small modification and retrofit projects; retrofit projects; and program development, management, and maintenance services for energy systems. EMCOR Group, Inc. was founded in 1966 and is headquartered in Norwalk, Connecticut.