Quanta Services - EPC company profile

Quanta Services: Explore engineering capabilities, representative projects and official company contacts.

Quanta Services — Specialized contracting for power and energy networks

Quanta is a decentralized group of infrastructure contractors serving electric power, gas, communications and pipeline customers. Operating companies self-perform construction, engineering and maintenance across transmission, distribution, generation and grid infrastructure; contract scope varies by operating company.
  • Legal name: Quanta Services, Inc.
  • Headquarters: Houston, Texas, United States
  • Founded: 1997
  • Official website: Quanta Services
  • URL: https://voltformer.com/epc-contractors/quanta-services
  • Markdown: https://voltformer.com/epc-contractors/quanta-services.md
  • JSON: https://voltformer.com/epc-contractors/quanta-services.json

CEO and leadership profile

Earl C. “Duke” Austin Jr.

President and Chief Executive Officer

Became CEO of Quanta Services in March 2016. Its decentralized operating-company model serves electric, gas, communications and pipeline infrastructure.

Quanta leadership · Quanta history

How to select an EPC contractor

EPC means engineering, procurement and construction. Compare contractors by project technology, country, voltage level and contractual delivery scope.

Directory methodology

This directory presents company profiles, not a scored ranking or certification. Company-wide experience may include engineering, EPCM, equipment supply and consortium roles. Confirm the exact role, current qualifications and project references with the official company before shortlisting.

What should an EPC enquiry include?

Specify the project country, capacity, grid voltage, single-line diagram, site conditions, scope boundaries, target schedule and acceptance tests. Clarify who owns permitting, civil works, grid studies, commissioning and performance guarantees.

Equipment enquiries submitted here go to Voltformer. Contact the listed company directly for its EPC services.

Engineering specializations

  • High-voltage transmission
  • Electric and gas distribution
  • Renewables and grid interconnection
  • Renewable generation and storage

Declared capabilities

  • Basic and detailed engineering: Listed capability; confirm project-specific scope
  • Procurement and supply: Listed capability; confirm project-specific scope
  • Civil and structural construction: Listed capability; confirm project-specific scope
  • Testing and commissioning: Listed capability; confirm project-specific scope
  • High-voltage substation EPC: Listed capability; confirm project-specific scope
  • Transmission lines: Listed capability; confirm project-specific scope
  • Turnkey power plant EPC: Not listed
  • Grid interconnection: Listed capability; confirm project-specific scope

Representative projects

Gateway South transmission line

  • Capacity / scope: 416-mile, 500-kV Gateway South line; PacifiCorp records completion in November 2024
  • Country: United States | Client: PacifiCorp | Year: 2024
  • Description: Quanta’s project story describes a 416-mile, 500-kV Wyoming-to-Utah line delivered through coordination across 21 Quanta operating companies. PacifiCorp identifies the Aeolus-to-Mona/Clover segment as complete in November 2024; Quanta’s story does not allocate a standalone contract share among its operating companies.
  • Technologies: Construction management
  • Original source: https://www.quantaservices.com/stories/gateway-south-pioneering-the-new-quanta-way/

Gateway West transmission project

  • Capacity / scope: Quanta’s completed package included a 150-mile single-circuit line; the roughly 1,000 miles describes the broader Gateway West program
  • Country: United States | Client: PacifiCorp | Year: 2020
  • Description: Quanta identifies the specific operating-company roles on Gateway West: QEPC handled project management, procurement, material management, controls, safety and quality; Summit Line Construction supplied construction management, construction and craft labor; Quanta Subsurface provided foundation design, inspections and geotechnical services. Quanta also reports procurement of 21.8 million pounds of steel and roughly 7 million feet of conductor. Quanta’s project record gives a November 1, 2020 completion date.
  • Technologies: Construction management
  • Original source: https://www.quantaservices.com/stories/gateway-west-transmission-line-project

SunZia transmission and wind projects

  • Capacity / scope: Awarded transmission and wind packages: 550-mile, ±525-kV HVDC line and 3,500-MW wind project; completion targets in the award were forward-looking
  • Country: United States | Client: Pattern Energy
  • Description: Quanta Services was selected by Hitachi Energy as partner for the SunZia projects, including managing HVDC construction and building installation at associated sites. Hitachi Energy’s 2023 release separately says it will supply alternating-current (AC) chopper technology to help restore power after temporary interruptions; it does not specify a unit count. This is a multi-party project and does not imply Quanta supplied the chopper equipment.
  • Technologies: Construction management
  • Original source: https://www.quantaservices.com/stories/quanta-services-selected-for-the-sunziatransmission-and-sunzia-wind-projects

Technical services

  • Utility infrastructure contracting: Operating companies provide self-performed construction, engineering, procurement support, commissioning and maintenance for utility networks and energy projects.
  • Project and program management: Coordinates technical scope, schedule, cost, procurement and interfaces where included in the appointment.
  • Construction-phase services: Field construction, self-perform trades or construction management are delivered only within the awarded scope; joint-venture responsibilities and contract value are project-specific.
  • Asset lifecycle and maintenance: Operations, maintenance, renewal or turnaround support is offered where relevant and contracted; it is not assumed for every project.

Standards and certifications

Official contacts

  • Address: Houston, Texas, United States
  • Official website: https://www.quantaservices.com/contact

Reference statistics

  • Operating companies: Decentralized model
  • Founded: 1997
  • Headquarters: Houston, Texas, United States

Company and energy news

Other languages

EPC contractors · Voltformer catalog

CEO and leadership profile

Earl C. “Duke” Austin Jr.

President and Chief Executive Officer

Became CEO of Quanta Services in March 2016. Its decentralized operating-company model serves electric, gas, communications and pipeline infrastructure.

In role since
2016-03
Sources checked

Official profile and sources

Company news

How to select an EPC contractor

EPC means engineering, procurement and construction. Compare contractors by project technology, country, voltage level and contractual delivery scope.

Directory methodology

This directory presents company profiles, not a scored ranking or certification. Company-wide experience may include engineering, EPCM, equipment supply and consortium roles. Confirm the exact role, current qualifications and project references with the official company before shortlisting.

What should an EPC enquiry include?

Specify the project country, capacity, grid voltage, single-line diagram, site conditions, scope boundaries, target schedule and acceptance tests. Clarify who owns permitting, civil works, grid studies, commissioning and performance guarantees.

Equipment enquiries submitted here go to Voltformer. Contact the listed company directly for its EPC services.

Company information is translated from the same reference record; official names and technical ratings are preserved.