Quanta Services subsidiaries

Based in Sumter, South Carolina, Sumter Utilities provides full-service electric power services to customers throughout the southern U.S. and beyond. As a subsidiary of Quanta Services, Inc., their already extensive capabilities expand to include full engineering, procurement and construction (EPC) services for virtually any project. Quanta (NYSE: PWR) is the leading provider of specialized contracting services, delivering infrastructure solutions to the electric power and natural gas and pipeline industries. The company provides a comprehensive range of services, including the design, installation, maintenance and repair of virtually every type of infrastructure. Sumter Utilities is committed to exceeding their customers' expectations. It is their mission to provide their clients with superior service through experience, integrity, dedication and above all safety! They pride ourselves to the best in the industry and look forward to serving all your power utility needs.

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Potelco was founded in 1965 as a private business in Sumner, Washington. They currently employ 1,100 people across 12 regional offices and they provide comprehensive electric utility construction services. Their fleet operations are located in Kent Washington and they have over 3,500 pieces of equipment.

PAR have the financial strength to handle large-capital transmission, distribution and substation projects. Their work requires a lot of talented people, special equipment and money. They can deploy these resources promptly; whenever and wherever clients need them. PAR is one of the largest and most respected outside plant electrical contracting companies in North America. They have the best people in the business. More than 2,000 professionals deliver the technical skill and physical capacity to respond safely, quickly and cost effectively to any project. Based in Kansas City, Missouri, PAR has permanent offices across the nation as well as temporary offices near its work sites. This national presence and local strength allows PAR to serve its clients safely and efficiently. PAR's original owners had the foresight to see how evolving economic conditions would affect electrical utilities and other power generators. They were the driving force behind the four companies that formed Quanta Services.

PES was formed to deliver safe, client-focused support to the onshore and offshore energy markets.

InfraSource LLC was formerly known as InfraSource Underground Services, LLC. The company was incorporated in 2006 and is based in New Berlin, Wisconsin. InfraSource LLC operates as a subsidiary of Quanta Services, Inc.

Based in Denver, Colorado, Intermountain Electric, Inc (IME), a wholly-owned subsidiary of Quanta Services, Inc. (NYSE:PWR), is the premier electrical and specialty contracting company for industries across the country.

Price Gregory International, Inc. (PGI) is a leading provider of infrastructure services with focus on pipeline construction and related services. Their company was formed through the merger of H.C. Price and Gregory & Cook Construction, two of the largest pipeline constructioncontractors with the equipment and capability to build large diameter pipelines. In 2009 Price Gregory was purchased by Quanta Services, a publicly traded company. Their corporate offices are located in Houston, Texas and they have additional locations in Alaska and Canada. Price Gregory is currently focused in North America with a presence in the Lower 48, Canada, and Alaska (including the North Slope). Price Gregory provides a broad array of construction services to Their customers. This division has built thousands of miles of pipeline around the world; built large electromechanical and power generation facilities; and provided maintenance and upgrade services.

M. J. Electric, LLC has been a proud member of the National Electrical Contractors Association for much of its history. NECA has provided us with the tools and support to help us as a national contractor who works in multi-union jurisdictions. MJE has been active in the organization with employees serving on various committees, serving as Governors, and was a founding member of the Electri 21 Council. Their association with NECA has made us a better contractor and provided us an avenue for training and a voice in their industry.

Iowa's premier stormwater engineering company. Experts in stormwater design, management, and inspection. SWPPP design and management. 319-338-7557

Underground Construction Co. Inc. is primarily engaged in providing electric services in combination with other services, with electric services as the major part though less than 95 percent of the total.