EX-21.1 2 d637038dex211.htm EX-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
1 Diamond, LLC |  | Delaware
1298888 Alberta Ltd. |  | Alberta
618232 Alberta Ltd. |  | Alberta
Aedon Consulting Inc. |  | British Columbia
All Power Products Inc. |  | Alberta
Allteck Line Contractors Inc. |  | British Columbia
American International Maritime Logistics, LLC |  | Texas
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. |  |
DNR Pressure Welding Ltd. |  | Alberta
Dacon Corporation |  | Delaware
Dashiell Corporation |  | Delaware
Dacon Corporation |  |
Dashiell (DE) Corporation |  |
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
Fueling Systems Contractors, LLC |  | Delaware
H. C. Price Canada Company |  | Nova Scotia
H.L. Chapman Pipeline Construction, Inc. |  | Delaware
DB Utilities |  |
Chapman Pipeline Construction, Inc., H.L. |  |
Sullivan Welding |  |
High Line Power Inc. |  | Ontario
InfraSource Construction, LLC |  | Delaware
IUC Illinois, LLC |  |
IUC Nebraska, LLC |  |
IUC Underground, LLC |  |
InfraSource FI, LLC |  | Delaware

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Subsidiary |  | State of Incorporation
InfraSource Field Services, LLC |  | Delaware
InfraSource Installation, LLC |  | Delaware
InfraSource, LLC |  | Delaware
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
Mears Inline Inspection Services |  |
Intermountain Electric, Inc. |  | Colorado
Colorado IM Electric |  |
Grand Electric |  |
IME |  |
Intermountain Electric, Inc. a Colorado Corporation |  |
IonEarth, LLC |  | Michigan
Irby Construction Company |  | Mississippi
Irby Construction Company, Inc. |  |
Okay Construction Company |  |
Island Mechanical Corporation |  | Hawaii
Lazy Q Ranch, LLC |  | Delaware
DE Lazy Q Ranch, LLC |  |
Lindsey Electric, L.P. |  | Texas
Manuel Bros., Inc. |  | Delaware
Renaissance Construction |  |
Western Directional |  |
McGregor Construction 2000 Ltd |  | Alberta
Mears Canada Corp. |  | Nova Scotia
Mears Construction, LLC |  | Georgia
Mears Construction of GA, LLC |  |
InfraSource Construction Services |  |
Mears Group, Inc. |  | Delaware
DE Mears Group, Inc. |  |
Mears Group Pty Ltd |  | Victoria, Australia
Allteck Power |  |
Mearsmex S. de R.L. de C.V. |  | Mexico
Mears Pipelines Pty Ltd. |  | Victoria, Australia
Mejia Personnel Services, Inc. |  | Texas
Mercer Software Solutions, LLC |  | 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 |  |
Nacap Australia Pty Ltd. |  | Victoria, Australia
North Houston Pole Line, L.P. |  | Delaware

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Subsidiary |  | State of Incorporation
North Houston Pole Line Corp. |  |
Quanta Foundation Services |  |
Quanta Foundation Services, Limited Partnership |  |
North Sky Engineering, Inc. |  | Delaware
NorthStar Energy Services, Inc. |  | North Carolina
InfraSource Pipeline Facilities, Inc. |  |
Bradford Brothers, Inc. |  |
BBI Bradford Brothers, Incorporated |  |
NC NorthStar Energy Services, Inc. |  |
Northstar Energy Services Inc. |  | Alberta
Northstar Transport Services Inc. |  | Alberta
Nova Constructors LLC |  | Japan
Nova Constructors LTD |  | United Kingdom
Nova Equipment Leasing LLC |  | Washington
Nova Group, Inc. |  | California
Nova Group, Inc. / Obayashi Corporation, LLC |  | California
Nova NextGen Solutions, LLC |  | Delaware
O. J. Pipelines Canada Corporation |  | New Brunswick
O. J. Pipelines Canada Limited Partnership. |  | Alberta
O. J. Industrial Maintenance |  |
RMS Welding Systems |  |
PAR Electrical Contractors, Inc. |  | Missouri
J. W. Didado Electric, Inc. |  |
Longfellow Drilling |  |
Longfellow Drilling, Inc. |  |
Par Infrared Consultants |  |
Seaward |  |
Seaward Corporation |  |
PAR Internacional, S. de R.L. de C.V. |  | Mexico
Performance Energy Services, L.L.C. |  | Louisiana
Performance Labor Services, L.L.C. |  | Louisiana
Phasor Engineering Inc. |  | Alberta
Potelco, Inc. |  | Washington
NorAm Telecommunications |  |
Potelco Incorporated |  |
POWERSTREAM, LLC |  | Delaware
POWERSTREAM Services, LLC |  |
Price Gregory Construction, Inc. |  | Delaware
Price Gregory International, Inc. |  | Delaware
Price Gregory Services, LLC |  | Delaware
Probst Electric, Inc. |  | Utah
PWR Financial Company |  | Delaware
PWR Network, LLC |  | Delaware
QCS ECA 0927 Development Ltd. |  | British Columbia
QPS Engineering, LLC |  | Delaware
QSI Finance (Australia) Pty Ltd. |  | Victoria, Australia
QSI Finance Canada ULC |  | British Columbia

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Subsidiary |  | State of Incorporation
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 Finance X (Canada) ULC |  | British Columbia
QSI, Inc. |  | Delaware
Quanta Asset Management LLC |  | Delaware
Quanta Associates, L.P. |  | Texas
Quanta Capital Solutions, Inc. |  | Delaware
Quanta Capital South Africa Pty Ltd. |  | South Africa
OPICONSVIA Investments 312 Proprietary Limited |  |
Quanta Delaware, Inc. |  | Delaware
Quanta Electric Power Services, LLC |  | Delaware
Quanta Energy Services, LLC |  | Delaware
Quanta Fiber Networks, Inc. |  | Delaware
Quanta Field Services, LLC |  | Delaware
Quanta Government Services, Inc. |  | Delaware
Quanta Government Solutions, Inc. |  | Delaware
Quanta Holdings 1 GP, LLC |  | Delaware
Quanta Infrastructure Services, S. de R.L. de C.V. |  | Mexico
Quanta International Holdings, Ltd. |  | British Virgin Islands
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 Marine Services, LLC |  | Delaware
Quanta Middle East, LLC |  | Qatar
Quanta Pipeline Services, Inc. |  | Delaware
Quanta Power Generation, Inc. |  | Delaware
Quanta Fossil Power |  |
Quanta Renewable Energy |  |
Quanta Power, Inc. |  | Delaware
Quanta Construction Services, Inc. |  |
Quanta Power Solutions India Private Limited |  | New Delhi, India
Quanta Receivables, L.P. |  | Delaware
Quanta Renewable Construction Pty Ltd. |  | South Africa

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Subsidiary |  | State of Incorporation
OPICONSVIA Investments 311 Proprietary Limited |  |
Quanta Services Africa (PTY) LTD. |  | South Africa
Ambrizo Investments 469 (PTY) LTD. |  |
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 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 Panama, S. de R.L. |  | Panama
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 |  | Karnataka, 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
Quantecua Cia. Ltda. |  | Ecuador
Realtime Engineers, Inc. |  | Delaware
Realtime Utility Engineers, Inc. |  | Wisconsin
InfraSource Engineering Company |  |
InfraSource Engineering Company, PC |  |
RMS Holdings, LLC |  | Delaware
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
Summit Line Construction, Inc. |  | Utah
Sumter Utilities, Inc. |  | Delaware
Sumter Builders Construction Contracting |  |
Sunesys, LLC |  | Delaware
Sunesys, LLC of Delaware |  |
Sunesys of Massachusetts, LLC |  | Delaware

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Subsidiary |  | State of Incorporation
Sunesys of Virginia, Inc. |  | Virginia
T. G. Mercer Consulting Services, Inc. |  | Texas
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
Ultimate Powerline Contracting Ltd. |  | Saskatchewan
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
Computapole |  |
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 Construction (Quebec) Inc. |  | Quebec
Valard Geomatics Ltd. |  | Alberta
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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