IESC vs PWR

IES Holdings Inc.

IES Holdings, Inc. designs and installs integrated electrical and technology systems, and provides infrastructure products and services in the United States. Its Commercial & Industrial segment offers electrical and mechanical design, construction, and maintenance services for office buildings, manufacturing facilities, data centers, chemical plants, refineries, wind farms, solar facilities, municipal infrastructures, and health care facilities. Its Communications segment designs, installs, and maintains network infrastructure within data centers for co-location and managed hosting customers; corporate, educational, financial, hospitality, and healthcare buildings; e-commerce distribution centers; and high-tech manufacturing facilities. This segment also provides design and installation services for audio/visual, telephone, fire, and wireless access and intrusion alarm systems; and engages in designing/building, servicing, and maintaining data network systems. Its Infrastructure Solutions segment maintains and repairs alternating and direct current electric motors and generators, and power generating and distribution equipment; manufactures custom-engineered metal enclosed bus duct solutions used in power distribution; manufactures custom commercial and industrial generator enclosures; manufactures, re-manufactures, and repairs industrial lifting magnets; and maintains and repairs railroad main and auxiliary generators, main alternators, and traction motors. Its Residential segment offers electrical installations to single-family housing and multi-family apartments; and cable television installations to residential and light commercial applications, as well as installs residential solar power for new construction and existing residences. The company was formerly known as Integrated Electrical Services, Inc. and changed its name to IES Holdings, Inc. in May 2016. The company was founded in 1997 and is headquartered in Houston, Texas.

Quanta Services Inc.

Quanta Services, Inc. provides specialty contracting services worldwide. The Electric Power Infrastructure Solutions segment engages in the design, construction, upgrade, repair, and maintenance of electric power transmission and distribution infrastructure and substation facilities; energized installation, maintenance, and upgrade of electric power infrastructure; installation of smart grid technologies on electric power networks; and design, installation, maintenance, and repair of commercial and industrial wirings. This segment also offers other engineering and technical services; emergency restoration services; engineering and construction services for the switchyards and transmission infrastructures; engineering and construction services related to micro-grids and battery storage; design and construction solutions to wireline and wireless communications companies and cable multi-system operators; aviation services; and training for electric workers, and gas distribution and communications industries. The Underground Utility and Infrastructure Solutions segment provides design, engineering, construction, upgrade repair, and maintenance services to customers involved in the transportation, distribution, storage and processing of natural gas, oil and other products; pipeline protection, integrity testing, rehabilitation and replacement; catalyst replacement, high-pressure and critical-path turnaround, instrumentation and electrical, and piping, and fabrication and storage tank services; engineering and construction services for pipeline systems, storage systems, and compressor and pump stations; fabrication of pipeline support systems and related structures and facilities; trenching, directional boring, and mechanized welding services; and construction services for the offshore energy market, as well as designs, installs, and maintains fueling systems and water and sewer infrastructure. The company was incorporated in 1997 and is headquartered in Houston, Texas.