EMCOR Group, Inc., headquartered in

Norwalk, Connecticut Norwalk is a city in Fairfield County, Connecticut, United States. The city, part of the New York metropolitan area, New York Metropolitan Area, is the List of municipalities of Connecticut by population, sixth-most populous city in Connecticut ...

, provides mechanical and electrical construction, industrial and energy infrastructure, and building services in the United States and the United Kingdom. It has over 100 operating subsidiaries and approximately 180 locations. The company is ranked 324th on the

Fortune 500 The ''Fortune'' 500 is an annual list compiled and published by ''Fortune (magazine), Fortune'' magazine that ranks 500 of the largest United States Joint-stock company#Closely held corporations and publicly traded corporations, corporations by ...

. In 2024, the company was ranked 2nd by ''

Engineering News-Record The ''Engineering News-Record'' (widely known as ''ENR'') is an American weekly magazine that provides news, analysis, data and opinion for the construction industry worldwide. It is widely regarded as one of the construction industry's most au ...

'' on its list of the top 600 specialty contractors. The company's electrical and mechanical construction services division, representing 67% of revenues in 2024, provides construction and operation services for infrastructure such as

power station A power station, also referred to as a power plant and sometimes generating station or generating plant, is an industrial facility for the electricity generation, generation of electric power. Power stations are generally connected to an electr ...

s, including those that provide

sustainable energy Energy system, Energy is sustainability, sustainable if it "meets the needs of the present without compromising the ability of future generations to meet their own needs." Definitions of sustainable energy usually look at its effects on the e ...

such as

photovoltaic system A photovoltaic system, also called a PV system or solar power system, is an electric power system designed to supply usable solar power by means of photovoltaics. It consists of an arrangement of several components, including solar panels to abso ...

food processing Food processing is the transformation of agricultural products into food, or of one form of food into other forms. Food processing takes many forms, from grinding grain into raw flour, home cooking, and complex industrial methods used in the mak ...

; road lighting and traffic control systems, and other heavy construction projects. The company's building services division, which represented 24% of revenues in 2024, maintains mechanical systems such as HVAC, plumbing, fire safety, automation, energy, and air quality. Notable government agencies that the company provides services for include the

National Archives and Records Administration The National Archives and Records Administration (NARA) is an independent agency of the United States government within the executive branch, charged with the preservation and documentation of government and historical records. It is also task ...

, the

Federal Deposit Insurance Corporation The Federal Deposit Insurance Corporation (FDIC) is a State-owned enterprises of the United States, United States government corporation supplying deposit insurance to depositors in American commercial banks and savings banks. The FDIC was cr ...

, the

Government Accountability Office The United States Government Accountability Office (GAO) is an independent, nonpartisan government agency within the legislative branch that provides auditing, evaluative, and investigative services for the United States Congress. It is the s ...

, and the departments of Transportation, Education, Health and Human Services, Energy, and Homeland Security, as well as the

NASA Jet Propulsion Laboratory The Jet Propulsion Laboratory (JPL) is a federally funded research and development center (FFRDC) in La Cañada Flintridge, California, Crescenta Valley, United States. Founded in 1936 by California Institute of Technology (Caltech) research ...

. The company's industrial services segment, which represented 9% of revenues in 2024, handles maintenance of

oil refineries An oil refinery or petroleum refinery is an industrial process plant where petroleum (crude oil) is transformed and refined into products such as gasoline (petrol), diesel fuel, asphalt base, fuel oils, heating oil, kerosene, liquefied pet ...

and other petrochemical processing plants. It is also leveraging its expertise to construct and maintain facilities related to

and

carbon capture and storage Carbon capture and storage (CCS) is a process by which carbon dioxide (CO2) from industrial installations is separated before it is released into the atmosphere, then transported to a long-term storage location.IPCC, 2021Annex VII: Glossary at ...

. The company has experienced growth as a result of increased demand for systems due to growth in

digital processing Digital data, in information theory and information systems, is information represented as a string of discrete symbols, each of which can take on one of only a finite number of values from some alphabet, such as letters or digits. An example ...

cloud computing Cloud computing is "a paradigm for enabling network access to a scalable and elastic pool of shareable physical or virtual resources with self-service provisioning and administration on-demand," according to International Organization for ...

, and

data storage Data storage is the recording (storing) of information (data) in a storage medium. Handwriting, phonographic recording, magnetic tape, and optical discs are all examples of storage media. Biological molecules such as RNA and DNA are con ...

. It has benefited from the increased usage of

data centers A data center is a building, a dedicated space within a building, or a group of buildings used to house computer, computer systems and associated components, such as telecommunications and computer data storage, storage systems. Since IT opera ...

energy transition An energy transition (or energy system transformation) is a major structural change to energy supply and consumption in an energy system. Currently, a transition to sustainable energy is underway to limit climate change. Most of the sustainab ...

, focuses on efficiency and sustainability, and

reshoring Offshoring is the relocation of a business process from one country to another—typically an operational process, such as manufacturing, or supporting processes, such as accounting. Usually this refers to a company business, although state gover ...

and

nearshoring Nearshoring is the outsourcing of business processes, especially information technology processes, to companies in a nearby country, often sharing a border with the target country. Both parties expect to benefit from one or more of the following di ...

History

In 1994, Jamaica Water Properties filed for bankruptcy after making making acquisitions unrelated to its core business and incurring significant debt. Frank MacInnis became CEO of the company, sold many of the businesses and renamed the remaining company as Emcor. The company also added facilities management services to provide a steady revenue stream. As of 2001, since the restructuring was completed in December 1994, the company had realized 27 consecutive quarters of year-over-year revenue growth. McInnis retired as CEO in January 2011 and as chairman in 2015.

Acquisitions

Controversies

Data breach

In March 2020, the company disclosed that a

ransomware Ransomware is a type of malware that Encryption, encrypts the victim's personal data until a ransom is paid. Difficult-to-trace Digital currency, digital currencies such as paysafecard or Bitcoin and other cryptocurrency, cryptocurrencies are com ...

incident had affected some of its IT systems on February 15, 2020. The incident was identified as an infection with Ryuk ransomware. Details about the incident were not disclosed, including whether or not the company paid the ransom demand.

References

{{Authority control Companies based in Norwalk, Connecticut Companies listed on the New York Stock Exchange Companies in the S&P 400