Exhibit 21.1
QUANTA SERVICES, INC. - SUBSIDIARIES LIST
The following is a list of the significant subsidiaries of Quanta Services, Inc. showing the place of incorporation or organization and the names under which each subsidiary does business. The names of certain subsidiaries are omitted as such subsidiaries, considered as a single subsidiary, would not constitute a significant subsidiary.
| Subsidiary | Jurisdiction of Formation |
1 Diamond, LLC Cutting Technology - 1 Diamond, LLC | Delaware |
| 1Diamond AS | Norway |
| 618232 Alberta Ltd. | Alberta |
8246408 Canada Inc. G-TEK | Quebec |
Advanced Electric Systems, LLC Advanced Utility Testing & Maintenance, LLC Utility Testing & Maintenance, LLC | Delaware |
| Aedon Consulting Inc. | British Columbia |
| All Power Products Inc. | Alberta |
| Allteck Line Contractors, Inc | British Columbia |
| Apprenticeship Programs, Inc. | Idaho |
| Arcanum Chemicals, LLC | Delaware |
| Arnett & Burgess Oil Field Construction Limited | Alberta |
| Arnett & Burgess Pipeliners (Rockies) LLC | Delaware |
| Arnett & Burgess Pipeliners Ltd. | Alberta |
| B&N Clearing and Environmental, LLC | Delaware |
Banister Pipelines Constructors Corp. Quanta Services EC(4) Canada Ltd. | British Columbia |
| Brent Woodward, Inc. | Oregon |
Brink Constructors, Inc. Brink Construction, Inc. Brink Constructors, Inc. A Corporation Of Sd Brink Constructors, Inc. A Corporation Of South Dakota | South Dakota |
| Canadian Utility Construction Corp. | Canada |
CAN-FER Utility Services, LLC Quanta Utility Services, LLC | Delaware |
| Cat-Spec, Ltd. | Texas |
| Citadel Industrial Services, Ltd. | Texas |
| Coe Drilling Pty Ltd. | Victoria, Australia |
| Conam Construction Co. | Texas |
| Consolidated Power Projects Australia Pty Ltd | Adelaide, Australia |
| Conti Communications, Inc. | Delaware |
| Crux Subsurface Canada Ltd. | British Columbia |
| Crux Subsurface, Inc. | Delaware |
| Dacon Corporation | Delaware |
Dashiell Corporation Dacon Corporation Dashiell (DE) Corporation Dashiell (DE), LLC Dashiell, Limited Liability Company | Delaware |
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| Subsidiary | Jurisdiction of Formation |
Digco Utility Construction, L.P. Digco Utility Construction Limited Partnership | Delaware |
| DNR Pressure Welding Ltd. | Alberta |
Domino Highvoltage Supply Inc. (f/k/a Domino Holdings Inc.) | British Columbia |
| Domino Highvoltage Supply, LLC | Delaware |
| Dorado Specialty Services, Ltd. | Texas |
EHV Power ULC EHV Power ULC Corp. | British Columbia |
| Elite Fabrication, Ltd. | Texas |
| Elite Piping & Civil, Ltd. | Texas |
| Elite Turnaround Specialists, Ltd. | Texas |
| Enscope Pty Ltd | Perth, Western Australia |
| FIC GP, LLC (f/k/a First Infrastructure Capital GP, LLC) | Delaware |
| First Infrastructure Capital Advisors, LLC | Delaware |
| First Infrastructure Capital GP, L.P. | Delaware |
| First Infrastructure Capital, L.P. | Cayman Islands |
| Five Points Construction Co. | Texas |
| FRP Transmission Innovations Inc. | British Columbia |
| Grid Creative, Inc. | Idaho |
| Grid Manufacturing Corporation | Idaho |
| Grid Training Corporation | Idaho |
| H. C. Price Canada Company | Nova Scotia |
H.L. Chapman Pipeline Construction, Inc. Chapman Pipeline Construction, Inc., H.L. DB Utilities | Delaware |
Hargrave Power, Inc. De Southeast Pipeline Construction, Inc. Hargrave Power, Inc. | Delaware |
| Heritage Midstream, LLC | Delaware |
| High Line Power Inc. | Ontario |
| Infraestructura ETP de Mexico, S. de R.L. de C.V | Mexico |
InfraSource Construction, LLC IUC ILLINOIS, LLC IUC Nebraska, LLC IUC Washington, LLC IUC Wisconsin, LLC IUS Underground,, LLC InfraSource Construction, LLC QS Mats Trans Tech Electric | Delaware |
| InfraSource Field Services, LLC | Delaware |
| InfraSource Installation, LLC | Delaware |
| InfraSource Services, LLC | Delaware |
InfraSource, LLC IUS Underground, LLC Infrasource Of Pa, LLC | Delaware |
| Integracion Tecnologica del Peru, SAC | Peru |
Intermountain Electric, Inc. Colorado IM Electric Grand Electric IM Electric, Inc. IME - Intermountain Electric, Inc. IME Electric | Colorado |
| IonEarth, LLC | Michigan |
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| Subsidiary | Jurisdiction of Formation |
Irby Construction Company Irby Construction Company, Inc. | Mississippi |
| Island Mechanical Corporation | Hawaii |
| JBT Electric, LLC | Texas |
| J.C.R. Construction Co., Inc. | New Hampshire |
| J.W. Didado Electric, LLC | Delaware |
JET Tank Service, LLC Quanta Tank Services | Oklahoma |
Lazy Q Ranch, LLC (De) Lazy Q Ranch, LLC | Delaware |
Lazy Q Training Center, LLC The Lazy Q Lineman School | Delaware |
| Lex Engineering Ltd. | British Columbia |
| Lindsey Electric, L.P. | Texas |
| M. G. Dyess, Inc. | Mississippi |
M. J. Electric, LLC Great Lakes Line Builders Iron Mountain Iron Mountain M.J. Electric, LLC M. J. ELECTRIC, LLC IRON MOUNTAIN M. J. Electric, LLC - Iron Mountain M.J. Electric Iron Mountain M.J. Electric, LLC Iron Mountain | Delaware |
Manuel Bros., Inc. Renaissance Construction | Delaware |
| Mears Canada Corp. | Nova Scotia |
| Mears Construction, LLC | Georgia |
| Mears Group Pty Ltd | Victoria, Australia |
Mears Group, Inc. De Mears Group De Mears Group, Inc. Ranger Digital Ranger Directional | Delaware |
| Mears Integrity Pty Ltd | Victoria, Australia |
| Mears Pipeline Pty Ltd. | Victoria, Australia |
| Mearsmex S. de R.L. de C.V. | Mexico |
| Mejia Personnel Services, Inc. | Texas |
Mercer Software Solutions, LLC Mercer Technical Services Mercer Technical Solutions LLC | Texas |
| Microline Technology Corporation | Michigan |
| N.J. Construction Pty Ltd | Australia |
| Nacap PNG Limited | Papua New Guinea |
Nacap Pty Ltd. (f/k/a Nacap Australia Pty Ltd.) | Victoria, Australia |
| NLC CA., Inc. | Idaho |
| NLC FL., Inc. | Idaho |
| NLC ID., Inc. | Idaho |
| NLC TX., Inc. | Idaho |
North Houston Pole Line, L.P. North Houston Pole Line Corp. QUANTA FOUNDATION SERVICES Quanta Foundation Services, Limited Partnership | Texas |
| North Sky Engineering, Inc. | Delaware |
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| Subsidiary | Jurisdiction of Formation |
Northern Powerline Constructors, Inc. Chatham Electric | Alaska |
NorthStar Energy Services, Inc. BBI Bradford Brothers, Incorporated Bradford Brothers, Inc. NC Northstar Energy Services, Inc QUANTA UNDERGROUND Quanta Underground Services, Inc. | North Carolina |
Northstar Sharp’s Foundation Specialists Ltd. (f/k/a Northstar Energy Services Inc.) | Alberta |
| Nova Constructors LLC | Japan |
| Nova Constructors LTD | United Kingdom |
| Nova Equipment Leasing, LLC | Washington |
Nova Group, Inc. NGI Construction NGI Construction, Inc. | California |
| Nova NextGen Solutions, LLC | Delaware |
| NPC Energy Services LLC | Alaska |
| O. J. Pipelines Canada Corporation | New Brunswick |
O. J. Pipelines Canada Limited Partnership O.J. Pipelines Canada Limited Partnership | Alberta |
| One Call Locators Canada Ltd. | Canada |
PAR Electrical Contractors, Inc. Computapole Didado Utility Company, Inc. J.W. Didado Electric J.W. Didado Electric, Inc. Longfellow Drilling Par Infrared Consultants Riggin & Diggin Line Construction Seaward Seaward Corporation Union Power Construction Company | Missouri |
| Par Internacional, S. de R.L. de C.V. | Mexico |
| Performance Energy Services, L.L.C. | Louisiana |
| Phasor Engineering Inc. | Alberta |
Phoenix North Constructors Inc. (f/k/a DiFazio North Constructors, Inc) | British Columbia |
| Phoenix Power Group, Inc. | Delaware |
Potelco, Inc. Nor Am Telecommunications Potelco Incorporated | Washington |
| Power Delivery Program, Inc. | Idaho |
| Price Gregory International, Inc. | Delaware |
| Price Gregory Services, LLC | Delaware |
Probst Electric, Inc. Probst Construction, Inc. | Utah |
| QCS ECA 0927 Development Ltd. | British Columbia |
| QES GP, LLC | Delaware |
QP Energy Services, LLC (f/k/a Quanta-Potelco Electrical Utilities, LLC) | Delaware |
| QPS Engineering LTD. | Alberta |
| QPS Engineering, LLC | Delaware |
| QSI Finance (Australia) Pty Ltd. | Victoria, Australia |
| QSI Finance (Cayman) Pvt. Ltd. | Cayman Islands |
| QSI Finance Canada ULC | British Columbia |
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| Subsidiary | Jurisdiction of Formation |
| QSI Finance GP (US) LLC | Delaware |
| QSI Finance I (US), LP | Delaware |
| QSI Finance II (Australia) Pty Ltd. | Victoria, Australia |
| QSI Finance II (Lux) S.à r.l | Luxembourg |
| QSI Finance III (Canada) ULC | British Columbia |
| QSI Finance III (Lux) SARL | Luxemburg |
QSI Finance IV (Canada) ULC (f/k/a QSI Finance GP (Canada) ULC) | British Columbia |
| QSI Finance IX (Canada) Limited Partnership | British Columbia |
| QSI Finance V (US), L.P. | Delaware |
| QSI Finance VI (Canada) ULC | British Columbia |
| QSI Finance VII (Canada) Limited Partnership | British Columbia |
| QSI Finance VIII (Canada) ULC | British Columbia |
| QSI Finance X (Canada) ULC | British Columbia |
| QSI, Inc. | Delaware |
| QTSL, LLC | Delaware |
| Quanta APL GP Ltd. | British Columbia |
| Quanta APL LP I Ltd. | British Columbia |
| Quanta APL LP II Ltd. | British Columbia |
| Quanta Asset Management LLC | Delaware |
| Quanta Associates, L.P. | Texas |
| Quanta Canada GP ULC | British Columbia |
| Quanta Canada Holdings II ULC | British Columbia |
| Quanta Canada Holdings LP | Alberta |
| Quanta Capital GP, LLC | Delaware |
| Quanta Capital LP, L.P. | Delaware |
| Quanta Capital Solutions, Inc. | Delaware |
| Quanta Capital South Africa Pty Ltd. | South Africa |
| Quanta Cares | Texas |
| Quanta Consulting Group, LLC | Delaware |
| Quanta Electric Power Construction, LLC | Delaware |
| Quanta Electric Power Services, LLC | Delaware |
| Quanta Energized Innovations Ltd. | British Columbia |
| Quanta Energized Services of Canada Ltd. | British Columbia |
| Quanta Energized Services U.S., LLC | Delaware |
| Quanta Energy Services, LLC | Delaware |
| Quanta Equipment Company, LLC | Delaware |
| Quanta Government Services, Inc. | Delaware |
| Quanta Government Solutions, Inc. | Delaware |
| Quanta Infrastructure Services, LLC | Delaware |
| Quanta Infrastructure Services, S. de R.L. de C.V. | Mexico |
| Quanta Inline Devices, LLC | Texas |
| Quanta Insurance Company, Inc. | Texas |
| Quanta International Holdings, Ltd. | British Virgin Islands |
| Quanta International Limited | British Virgin Islands |
| Quanta Kingsvale LP Ltd. | British Columbia |
| Quanta Marine Services, LLC | Delaware |
| Quanta Middle East, LLC | Qatar |
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| Subsidiary | Jurisdiction of Formation |
Quanta Pipeline Services, Inc. QPS Flint Construction QPS Flint Tank Services Quanta EPC Services Quanta Tank Services | Delaware |
| Quanta Power Australia Pty Ltd | Australia |
Quanta Power Generation, Inc. Quanta Power Generation, Inc. A Utility Construction Co. | Delaware |
| Quanta Power Solutions India Private Limited | New Delhi, India |
| Quanta Power, Inc. | Delaware |
| Quanta Renewable Construction Pty Ltd. | South Africa |
| Quanta Services (India) Ltd. | British Virgin Islands |
| Quanta Services Africa (PTY) Ltd. | South Africa |
| Quanta Services Australia Pty Ltd. | Victoria, Australia |
| Quanta Services CC Canada Ltd. | British Columbia |
| Quanta Services Chile SpA | Chile |
| Quanta Services Colombia S.A.S. | Colombia |
| Quanta Services Costa Rica, Ltda. | Costa Rica |
| Quanta Services Guatemala, Ltda. | Guatemala |
| Quanta Services International Holdings LP | Alberta |
Quanta Services Management Partnership, L.P. Quanta Services Management Partnership LP | Texas |
| Quanta Services Netherlands B.V. | Netherlands |
| Quanta Services of Canada Ltd. | British Columbia |
| Quanta Services Panama, S. de R.L. | Panama |
| Quanta Services Peru S.A.C. | Peru |
| Quanta Subsurface Canada, Ltd. | British Columbia |
| Quanta Subsurface, LLC | Delaware |
| Quanta Technology Canada ULC | British Columbia |
| Quanta Technology UK Ltd. | United Kingdom |
Quanta Technology, LLC Delaware Quanta Technology, LLC | Delaware |
| Quanta Tecnologia do Brasil Ltda. | Brazil |
| Quanta Telecom Canada Ltd. | British Columbia |
Quanta Telecommunication Services, LLC Quanta Telecom Quanta Telecom Services Quanta Telecommunication Services | Delaware |
Quanta Utility Engineering Services, Inc. (f/k/a Utilimap Corporation) | Missouri |
| Quanta Utility Installation Company, Inc. | Delaware |
| Quantecua Cia. Ltda. | Ecuador |
| Realtime Engineers, Inc. | Delaware |
Realtime Utility Engineers, Inc. Infrasource Engineering Company Infrasource Engineering Company, PC | Wisconsin |
| Redes Andinas de Comunicaciones S.R.L. | Peru |
RMS Holdings, LLC RMS Welding Systems RMS Welding Systems, LLC Rms Welding Systems LLC Rms Welding, LLC | Delaware |
| Road Bore Corporation | Hawaii |
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| Subsidiary | Jurisdiction of Formation |
Service Electric Company Dillard Smith Construction Company (Delaware) Service Electric Company Of Delaware Service Electric Company of Delaware Service Electric Company, Inc. | Delaware |
| Servicios de Infraestructura del Peru S.A.C. | Peru |
| Servicios Par Electric, S. de R.L. de C.V. | Mexico |
| Southwest Trenching Company, Inc. | Texas |
| Specialty Tank Services, Ltd. | Texas |
| Stronghold General, LLC | Texas |
| Stronghold Inspection, Ltd. | Texas |
| Stronghold Specialty General, LLC | Texas |
| Stronghold Specialty, Ltd. | Texas |
| Stronghold Tower Group, Ltd. | Texas |
| Stronghold, Ltd. | Texas |
| Subterra Damage Prevention Specialists Ltd. | Canada |
| Summit Line Construction, Inc. | Utah |
| Sumter Utilities, Inc. | Delaware |
| T. G. Mercer Consulting Services, Inc. | Texas |
| TC Infrastructure Services Ltd. | British Columbia |
The Ryan Company, Inc. Eastern Communications Ryan Company, Inc. of Massachusetts The Massachusetts Ryan Company, Inc. The Ryan Company Inc of Massachusetts The Ryan Company Inc. of Massachusetts The Ryan Company Incorporated Of Massachusetts The Ryan Company Incorporated of Massachusetts The Ryan Company Of Massachusetts, Inc. The Ryan Company of Massachusetts The Ryan Company of Massachusetts, Inc. The Ryan Company, Inc. (Massachusetts) The Ryan Company, Inc. of Massachusetts | Massachusetts |
Tom Allen Construction Company Allen Construction Company, Tom TA Construction Tom Allen Construction Company of Delaware | Delaware |
| TurnKey Automation, Ltd. | Texas |
| Ultimate Powerline Contracting Ltd. | Saskatchewan |
Underground Construction Co., Inc. Delaware Underground Construction Co. Maryland Underground Construction Co., Inc. UCC - Undergroud Construction Co. UCC Underground Construction Co., Inc. Ucc - Underground Construction Co. Underground Construction Co., Inc. (Delaware) Underground Construction Inc. | Delaware |
| Underground Electric Construction Company, LLC | Delaware |
Utility Line Management Services, Inc. Ulm Services, Inc. | Delaware |
| Utility Training Services Corporation | Idaho |
| Valard Construction (Manitoba) Ltd. | Manitoba |
| Valard Construction (Ontario) Ltd. | Ontario |
| Valard Construction (Quebec) Inc. | Quebec |
Valard Construction 2008 Ltd. Valard Construction LP | Alberta |
| Valard Construction LP | Alberta |
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| Subsidiary | Jurisdiction of Formation |
| Valard Construction Ltd. | British Columbia |
| Valard Equipment (AB) Ltd. | British Columbia |
| Valard Geomatics (Ontario) Ltd. | Ontario |
| Valard Geomatics Ltd. | Alberta |
| Valard Land Surveying Ltd. | British Columbia |
| Valard Mechanical Ltd. | British Columbia |
| Valard Norway AS | Norway |
| Valard Sweden AB | Sweden |
| Valard Zagreb d. o. o. | Croatia |
Winco, Inc. Winco Helicopters Winco Powerline Services Winco Powerline Services Inc. Winco Powerline Services, Inc. Winco Services Inc. Winco, Inc. an Oregon Based Corporation | Oregon |
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