EX-21.1 6 d457733dex211.htm EXHIBIT 21.1

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 |  | State of Incorporation
129888 Alberta Ltd. |  | Alberta
618232 Alberta Ltd. |  | Alberta
All Power Products Inc. |  | Alberta
Allteck Line Contractors (USA), Inc. |  | Washington
Allteck Line Contractors Inc. |  | British Columbia
CAN-FER Utility Services, LLC |  | Delaware
Coe Drilling Pty Ltd. |  | Victoria, Australia
Conam Construction Co. |  | Texas
Conti Communications, Inc. |  | Delaware
Croce Electric Company, Inc. |  | Delaware
Croce Electric Company |  |
Crux Subsurface, Inc. |  | Delaware
Inland Pacific Drill Supply |  |
Quanta LXV Acquisition, Inc. |  |
Dacon Corporation |  | Delaware
Danford Technologies, Inc. |  | British Columbia
Dashiell Corporation |  | Delaware
Dacon Corporation |  |
Dashiell (DE), LLC |  |
Digco Utility Construction, L.P. |  | Delaware
Ranger Field Services |  |
EHV Elecon, Inc. |  | Puerto Rico
EHV Power ULC |  | British Columbia
EHV Power ULC Corp. |  |
Energy Construction Services, Inc. |  | Delaware
Five Points Construction Co. |  | Texas
H. C. Price Canada Company |  | Nova Scotia
H.L. Chapman Pipeline Construction, Inc. |  | Delaware
DB Utilities |  |
Chapman Pipeline Construction, Inc., H.L. |  |
Sullivan Welding |  |
InfraSource Construction, LLC |  | Delaware
IUC Illinois, LLC |  |
IUC Nebraska, LLC |  |
IUC Underground, LLC |  |
InfraSource Construction Services, LLC |  | Georgia
InfraSource FI, LLC |  | Delaware
InfraSource Field Services, LLC |  | Delaware
InfraSource Installation, LLC |  | Delaware
InfraSource, LLC |  | Delaware

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Subsidiary |  | State of Incorporation
IUS Underground, LLC |  |
InfraSource Services, LLC |  | Delaware
InfraSource Transmission Services Company |  | Arizona
InfraSource Underground Construction, Inc. |  | Delaware
InfraSource Underground Services Canada, Inc. |  | Delaware
Inline Devices, LLC |  | Texas
IonEarth, LLC |  | Michigan
Intermountain Electric, Inc. |  | Colorado
Colorado IM Electric |  |
Grand Electric |  |
IME |  |
Irby Construction Company |  | Mississippi
Irby Construction Company, Inc. |  |
Okay Construction Company |  |
Island Mechanical Corporation |  | Hawaii
Lindsey Electric, L.P. |  | Texas
Manuel Bros., Inc. |  | Delaware
Renaissance Construction |  |
Western Directional |  |
McGregor Construction 2000 Ltd |  | Alberta
Mears Canada Corp. |  | Nova Scotia
Mears Group, Inc. |  | Delaware
DE Mears Group, Inc. |  |
Mears Group Pty Ltd |  | Victoria, Australia
Allteck Power |  |
Mears/CPG LLC |  | Michigan
Mearsmex S. de R.L. de C.V. |  | Mexico
Mejia Personnel Services, Inc. |  | Texas
Microline Technology Corporation |  | Michigan
M.J. Electric, LLC |  | Delaware
M.J. Electric, LLC Iron Mountain |  |
M.J. Electric, Iron Mountain |  |
Iron Mountain M.J. Electric, LLC |  |
Great Lakes Line Builders |  |
M.J. Electric California, Inc. |  | Delaware
North Houston Pole Line, L.P. |  | Delaware
North Houston Pole Line Corp. |  |
Quanta Foundation Services |  |
Quanta Foundation Services, Limited Partnership |  |
North Sky Engineering, Inc. |  | Delaware
NorthStar Energy Services, Inc. |  | North Carolina
Bradford Brothers, Inc. |  |
BBI Bradford Brothers, Incorporated |  |
Quanta Underground Services |  |
Nova NextGen Solutions, LLC |  | Delaware
O. J. Pipelines Canada Corporation |  | New Brunswick
O. J. Pipelines Canada Limited Partnership. |  | Alberta

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Subsidiary |  | State of Incorporation
O. J. Industrial Maintenance |  |
RMS Welding Systems |  |
PAR Electrical Contractors, Inc. |  | Missouri
Computapole |  |
Longfellow Drilling |  |
Longfellow Drilling, Inc. |  |
Par Infrared Consultants |  |
Riggin & Diggin Line Construction |  |
Seaward |  |
Seaward Corporation |  |
Union Power Construction Company |  |
PAR Internacional, S. de R.L. de C.V. |  | Mexico
Phasor Engineering Inc. |  | Alberta
Potelco, Inc. |  | Washington
Kingston Constructors |  |
Kuenzi Construction |  |
NorAm Telecommunications |  |
Potelco Incorporated |  |
Price Gregory Construction, Inc. |  | Delaware
Price Gregory International, Inc. |  | Delaware
Price Gregory Services, LLC |  | Delaware
PWR Financial Company |  | Delaware
PWR Network, LLC |  | Delaware
QCS ECS 0927 Development Ltd. |  | British Columbia
QPS Engineering, LLC |  | Delaware
QSI Finance Canada ULC |  | British Columbia
QSI Finance I (US), Inc. |  | Delaware
QSI Finance II (Lux) S.à r.l |  | Luxembourg
QSI Finance III (Canada) ULC |  | British Columbia
QSI Finance IV (Canada) ULC |  | British Columbia
QSI Finance V (US), LLP |  | 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 IX (Canada) Limited Partnership |  | British Columbia
QSI, Inc. |  | Delaware
Quanta Asset Management LLC |  | Delaware
Quanta Associates, L.P. |  | Texas
Quanta Capital Solutions, Inc. |  | Delaware
Quanta Delaware, Inc. |  | Delaware
Quanta Electric Power Services, LLC |  | Delaware
Quanta Energy Services, LLC |  | Delaware
Quanta Fiber Networks, Inc. |  | Delaware
Quanta Government Services, Inc. |  | Delaware
Quanta Government Solutions, Inc. |  | Delaware
Quanta Holdings 1 GP, LLC |  | Delaware
Quanta International Holdings, Ltd. |  | British Virgin Islands

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Subsidiary |  | State of Incorporation
Quanta International Limited |  | British Virgin Islands
Quanta Philippines |  |
Quanta International Services, Inc. |  | Delaware
Quanta LXVII Acquisition, Inc. |  | Delaware
Quanta LXVIII Acquisition, Inc. |  | Delaware
Quanta LXIX Acquisition, Inc. |  | Delaware
Quanta LXX Acquisition, Inc. |  | Delaware
Quanta LXXI Acquisition, Inc. |  | Delaware
Quanta LXXII Acquisition, Inc. |  | Delaware
Quanta LXXIII Acquisition, Inc |  | Delaware
Quanta Middle East, LLC |  | Qatar
Quanta Pipeline Services, Inc. |  | Delaware
Quanta Power, Inc. |  | Delaware
Quanta Construction Services, Inc. |  |
Quanta Power Generation, Inc. |  | Delaware
Quanta Fossil Power |  |
Quanta Renewable Energy |  |
Quanta Power Solutions India Private Limited |  | India
Quanta Receivables, L.P. |  | Delaware
Quanta Services Africa (PTY) LTD. |  | South Africa
Ambrizo Investments 469 (PTY) LTD. |  |
Quanta Services CC Canada Ltd. |  | British Columbia
Quanta Services Chile SpA |  | Chile
Quanta Services Colombia S.A.S. |  | Colombia
Quanta Services Contracting, Inc. |  | Delaware
Quanta Services Costa Rica Ltda. |  | Costa Rica
Quanta Services Guatemala Ltda. |  | Guatemala
Quanta Services (India) Ltd. |  | British Virgin Islands
Quanta Services Management Partnership, L.P. |  | Texas
Quanta Services Netherlands B.V. |  | Netherlands
Quanta Technology Europe |  |
Quanta Services of Canada Ltd. |  | British Columbia
Quanta Services Peru S.A.C. |  | Peru
Quanta Technology Canada ULC |  | British Columbia
Quanta Technology, LLC |  | Delaware
Quanta Tecnologia do Brasil Ltda. |  | Brazil
Quanta Towergen Private Limited |  | Bangalore, India
Quanta Utility Installation Company, Inc. |  | Delaware
Quanta Utility Services – Gulf States, Inc. |  | Delaware
De Southeast Pipeline Construction, Inc. |  |
Quanta Utility Services of Canada Inc. |  | British Columbia
QuantaWorks, LLC |  | Delaware
Realtime Engineers, Inc. |  | Delaware
Realtime Utility Engineers, Inc. |  | Wisconsin
InfraSource Engineering Company |  |
InfraSource Engineering Company, PC |  |
RMS Holdings, LLC |  | Delaware

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Subsidiary |  | State of Incorporation
Road Bore Corporation |  | Hawaii
Service Electric Company |  | Delaware
Dillard Smith Construction Company |  |
Dillard Smith Construction Company (Delaware) |  |
P.D.G. Electric |  |
Service Electric Company of Delaware |  |
Servicios Par Electric, S. de R.L. de C.V. |  | Mexico
Sharp’s Construction Services 2006 Ltd. |  | Alberta
Southwest Trenching Company, Inc. |  | Texas
Sumter Utilities, Inc. |  | Delaware
Sumter Builders Construction Contracting |  |
Sunesys, LLC |  | Delaware
Sunesys, LLC of Delaware |  |
Sunesys of Massachusetts, LLC |  | Delaware
Sunesys of Virginia, Inc. |  | Virginia
The Ryan Company, Inc. |  | Massachusetts
Eastern Communications |  |
Ryan Company Inc. (The) |  |
The Ryan Company Inc. of Massachusetts |  |
The Ryan Company of Massachusetts |  |
The Ryan Company Incorporated of Massachusetts |  |
The Ryan Company Incorporated Electrical Contractors |  |
Tom Allen Construction Company |  | Delaware
TA Construction |  |
Allen Construction Company, Tom |  |
Total Quality Management Services, LLC |  | Delaware
Underground Construction Co., Inc. |  | Delaware
Delaware Underground Construction Co. |  |
Maryland Underground Construction Co., Inc. |  |
Underground Construction Co., Inc. (Delaware) |  |
UCC-Underground Construction Co., Inc. |  |
Utilimap Corporation |  | Missouri
Utility Line Management Services, Inc. |  | Delaware
Valard Construction Ltd. |  | British Columbia
Quanta Services EC Canada Ltd. |  |
Valard Construction LP |  | Alberta
Valard Construction 2008 Ltd. |  | Alberta
Valard Construction (Manitoba) Ltd. |  | Manitoba
Valard Construction (Ontario) Ltd. |  | Ontario
Valard Norway AS |  | Norway
Valard Sweden AB |  | Sweden
Valard Wellpoint Systems Ltd. |  | Alberta
VCS Sub, Inc. |  | California
Winco, Inc. |  | Oregon
Winco Powerline Services |  |
Winco Powerline Services, Inc. |  |

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