EX-21.1 4 pwr-ex211x12x31x2019.htm EXHIBIT 21.1 Exhibit


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 may be omitted if such subsidiaries, considered as a single subsidiary, would not constitute a significant subsidiary.

Subsidiary Name and Names
Under Which Subsidiary Does Business
Jurisdiction of Incorporation or Formation
1 Diamond, LLC
Cutting Technology - 1 Diamond, LLC
Delaware
1Diamond AS
Norway
618232 Alberta Ltd.
Alberta
8246408 Canada Inc.
G-TEK
G-Vac
Quebec
Advanced Electric Systems, LLC
Advanced Utility Testing & Maintenance, LLC
Utility Testing & Maintenance, LLC
Delaware
Alexander Publications, LLC
California
Allteck GP Ltd.
British Columbia
Allteck Limited Partnership
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 GP Ltd.
British Columbia
Banister Pipelines Limited Partnership
British Columbia
Brent Woodward, Inc.
Oregon
Brink Constructors, Inc.
Brink Constructors, Inc. A Corporation Of South Dakota
South Dakota
Canadian Utility Construction Corp.
Canada
Catalyst Changers Inc.
Alberta
Cat-Spec, Ltd.
Cat Spec Limited, LP
Cat Spec, Ltd
CAT SPEC, Ltd.
Cat Spec, Ltd. L.P.
Cat Spec, Ltd., LP
Cat Spec., Ltd. LP
CAT-Spec Limited Partnership
Cat-Spec Ltd, LP
CAT-SPEC, Limited Partnership
CAT-SPEC, Limited Partnership (Regd Name) CAT SPEC, Ltd. (Part Name)
Cat-Spec, Ltd (A Domestic limited Partnership)
Cat-Spec, Ltd. Limited Partnership
Cat-Spec, Ltd., L.P.
Cat-Spec, Ltd., LP (Used in VA By: Cat-Spec, Ltd.)
Texas

1



Subsidiary Name and Names
Under Which Subsidiary Does Business
Jurisdiction of Incorporation or Formation
Citadel Industrial Services, Ltd.
Citadel Industrial Services, L.P.
Citadel Industrial Services, Ltd. Limited Partnership
Citadel Industrial Services, Ltd., L.P.
Texas
Coe Drilling Pty Ltd.
Australia
Conam Construction Co.
Texas
Consolidated Power Projects Australia Pty Ltd
Australia
Conti Communications, Inc.
Delaware
Crux Subsurface Canada Ltd.
British Columbia
Crux Subsurface, Inc.
Delaware
Dacon Corporation
Delaware
Dashiell Corporation
(f/k/a Dashiell, LLC)
Dashiell (DE) Corporation (Dashiell Corporation)
Dashiell Corporation DBA Dashiell (DE) Corporation
Dacon Corporation
Delaware
Digco Utility Construction, L.P.
Digco Utility Construction Limited Partnership
Delaware
DNR Pressure Welding Ltd.
Alberta
Dorado Specialty Services, Ltd.
Dorado Specialty Services, L.P.
Dorado Specialty Services, Ltd. L.P.
Dorado Specialty Services, Ltd. Limited Partnership
Dorado Specialty Services. Ltd., L.P.
Texas
EHV Power ULC
British Columbia
Elite Fabrication, Ltd.
Elite Fabrication, LP
Texas
Elite Piping & Civil, Ltd.
Elite Piping & Civil Limited Partnership
Elite Piping & Civil Ltd, L.P.
ELITE PIPING & CIVIL, L.P.
Elite Piping & Civil, Limited Partnership
Elite Piping & Civil, Lp
Elite Piping & Civil, Ltd. Limited Partnership
Elite Piping & Civil, Ltd., L.P.
Elite Piping and Civil, L.P.
Texas
Elite Turnaround Specialists, Ltd.
Elite Turnaround Specialists Limited Partnership
Elite Turnaround Specialists Limited Lp
Elite Turnaround Specialists Limited Partnership
Elite Turnaround Specialists Ltd. L.P.
Elite Turnaround Specialists, L.p.
Elite Turnaround Specialists, Limited Partnership
ELITE TURNAROUND SPECIALISTS, LTD
Elite Turnaround Specialists, Ltd, Lp
Elite Turnaround Specialists, Ltd. Limited Partnership
Elite Turnaround Specialists, Ltd., LP
Texas
Energy Consulting Group, LLC
Delaware
Enscope Pty Ltd
Australia
FIC GP, LLC
(f/k/a First Infrastructure Capital GP, LLC)
Delaware
Field Personnel Services, LLC
Delaware
First Infrastructure Capital Advisors, LLC
Delaware
First Infrastructure Capital GP, L.P.
Delaware
Five Points Construction Co.
Texas

2



Subsidiary Name and Names
Under Which Subsidiary Does Business
Jurisdiction of Incorporation or Formation
Grid Creative, Inc.
Idaho
Grid Manufacturing Corporation
Idaho
Grid Training Corporation
Northwest Lineman Center
Northwest Lineman College
Idaho
H.L. Chapman Pipeline Construction, Inc.
Delaware
Haverfield International Incorporated
Haverfield Aviation
Haverfield Aviation, Inc.
Delaware
Heritage Midstream, LLC
Delaware
Infraestructura ETP de Mexico, S. de R.L. de C.V
Mexico
InfraSource Construction, LLC
(f/k/a Infrasource Underground Construction, LLC)
Infrasource Iowa Underground, LLC
InfraSources Construction, LLC
IUC ILLINOIS, LLC
IUC Nebraska, LLC
QS Mats
Trans Tech Electric
Delaware
InfraSource Field Services, LLC
Delaware
InfraSource Services, LLC
Delaware
Integracion Tecnologica del Peru, SAC
Peru
Intermountain Electric, Inc.
Grand Electric Inc.
IM Electric, Inc.
Ime Electric
Intermountain Electric, Inc. which will do business in California as: Colorado IM Electric
Intermountain Electric, Inc., A Corporation of Colorado
Colorado
IonEarth, LLC
Michigan
Irby Construction Company
Irby Construction Company, Inc.
Legend Foundation Services
Marathon Construction Services
Mississippi
Island Mechanical Corporation
Hawaii
J.C.R. Construction Co., Inc.
J.C.R. Utility Construction Co.
New Hampshire
J.W. Didado Electric, LLC
Delaware
JBT Electric, LLC
Texas
Lazy Q Ranch, LLC
DE 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 M.J. Electric, LLC
M. J. Electric, LLC - Iron Mountain
M. J. Electric, LLC DBA M. J. Electric Iron Mountain, LLC
M. J. ELECTRIC, LLC IRON MOUNTAIN
M.J. Electric, LLC DBA M.J. Electric Iron Mountain
M.J. Electric, LLC Iron Mountain
Delaware

3



Subsidiary Name and Names
Under Which Subsidiary Does Business
Jurisdiction of Incorporation or Formation
Manuel Bros., Inc.
Delaware
Mears Canada Corp.
Nova Scotia
Mears Equipment Services, LLC
Infrasource Of Pa, LLC
QPS Global Services
Delaware
Mears Group Pty Ltd
Australia
Mears Group, Inc.
De Mears Group
De Mears Group, Inc.
Enscope
Ranger Directional
Delaware
Mears Installation, LLC
Delaware
Mearsmex S. de R.L. de C.V.
Mexico
Mejia Personnel Services, LLC
Texas
Microline Technology Corporation
Michigan
Mid America Energy Services, Inc.
(f/k/a Tom Allen Construction Company)
TA Construction
Tom Allen Construction Company Inc.
Tom Allen Construction Company of Delaware
Delaware
MTS Quanta, LLC
Mercer Technical Services
MTS Field Services
MTS Field Services (Richmond Co)
Texas
NACAP Niugini Ltd.
Papua New Guinea
Nacap PNG Limited
Papua New Guinea
Nacap Pty Ltd.
(f/k/a Nacap Australia Pty Ltd.)
Australia
NLC CA., Inc.
Idaho
NLC FL., Inc.
Northwest Lineman Center
Idaho
NLC ID., Inc.
Northwest Lineman College
Idaho
NLC TX., Inc.
Northwest Lineman Center
Northwest Lineman Training Center
Northwest Lineman Training Center, Inc.
Idaho
North Houston Pole Line, L.P.
North Houston Pole Line Limited Partnership
QUANTA FOUNDATION SERVICES
Texas
Northern Powerline Constructors, Inc.
Chatham Electric 
Alaska
NorthStar Energy Services, Inc.
(f/k/a CAN-FER Utility Services, LLC)
NC Northstar Energy Services, Inc
Quanta Underground Services
Quanta Underground Services (Culpeper Co)
Quanta Underground Services (Spotsylvania Co)
Quanta Underground Services, Inc.
North Carolina
Northstar Energy Solutions, LLC
Delaware
Nova Constructors LLC
Japan
Nova Constructors LTD
United Kingdom
Nova Equipment Leasing, LLC
Washington

4



Subsidiary Name and Names
Under Which Subsidiary Does Business
Jurisdiction of Incorporation or Formation
Nova Group, Inc.
NGI Construction
NGI Construction, Inc.
NGI Construction, Inc. (FN)
Nova Group, Inc
Nova Group, Inc (CA)
Nova Group, Inc. DBA NGI Construction
California
Nova NextGen Solutions, LLC
Delaware
NPC Energy Services LLC
Alaska
O. J. Pipelines Canada Corporation
O.J. Pipelines Canada
O.J. Industrial Maintenance
New Brunswick
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
Riggin & Diggin Line Construction
Seaward
Seaward Corp
Seaward Corporation
Missouri
Par Internacional, S. de R.L. de C.V.
Mexico
Performance Energy Services Guyana, Ltd.
(f/k/a Quanta International Holdings III, Ltd.)
British Virgin Islands
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.
Potelco, Incorporated
Washington
Power Delivery Program, Inc.
Idaho
Price Gregory International, Inc.
Delaware
Price Gregory Services, LLC
Delaware
Probst Electric, Inc.
Probst Construction, Inc.
Advanced Electric Systems
Utility Fleet Services
Utah
QEPC Power Solutions, LLC
Delaware
QES GP, LLC
Delaware
QP Energy Services, LLC
(f/k/a Quanta-Potelco Electrical Utilities, LLC)
Delaware
QPS Engineering LTD.
Quanta Inspection Services
Quanta Resource Development
Alberta
QPS Engineering, LLC
QPS Engineering PLLC
QPS Environmental
QPS Global
QPS Global Services
QPS Global Services (Richmond Ci)
QPSE
Delaware

5



Subsidiary Name and Names
Under Which Subsidiary Does Business
Jurisdiction of Incorporation or Formation
QSI Engineering, Inc.
(f/k/a Empire Geo-Services, Inc.)
Delaware
QSI Finance (Australia) Pty Ltd.
Australia
QSI Finance (Cayman) Pvt. Ltd.
Cayman Islands
QSI Finance Canada ULC
British Columbia
QSI Finance GP (US) LLC
Delaware
QSI Finance I (Singapore) Pte. Ltd.
Singapore
QSI Finance I (US), LP
Delaware
QSI Finance II (Australia) Pty Ltd.
Australia
QSI Finance II (Lux) S.à r.l
Luxembourg
QSI Finance II (Singapore) Pte. Ltd.
Singapore
QSI Finance III (Canada) ULC
British Columbia
QSI Finance III (Lux) SARL
Luxemburg
QSI Finance IV (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
QSN Lux Holdings I SCSp
Luxembourg
QSN Lux Holdings II SCSp
Luxembourg
QSN Lux Holdings III SCSp
Luxembourg
QSN Lux Holdings IV SCSp
Luxembourg
QTSL, LLC
Delaware
Quanta APL GP II Ltd.
British Columbia
Quanta Asset Management LLC
Delaware
Quanta Associates, L.P.
Texas
Quanta Aviation Services, LLC
Delaware
Quanta Canada GP ULC
British Columbia
Quanta Canada Holdings III Limited Partnership
British Columbia
Quanta Canada Holdings LP
Alberta
Quanta Canada III GP Ltd.
British Columbia
Quanta Capital GP, LLC
Delaware
Quanta Capital LP, L.P.
Delaware
Quanta Capital Solutions, Inc.
Delaware
Quanta Cares
Texas
Quanta Electric Power Construction Management, Inc.
Nebraska
Quanta Electric Power Construction, LLC
QEPC
Delaware
Quanta Electric Power Services West, 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

6



Subsidiary Name and Names
Under Which Subsidiary Does Business
Jurisdiction of Incorporation or Formation
Quanta Equipment Company, LLC
Delaware
Quanta Government Solutions, Inc.
Delaware
Quanta Holdings I (Netherlands), B.V.
Netherlands
Quanta Holdings II (Netherlands), B.V.
Netherlands
Quanta Infraestructura de Chile SpA
Chile
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 (US) LLC
Delaware
Quanta International Holdings II, Ltd.
British Virgin Islands
Quanta International Holdings, Ltd.
British Virgin Islands
Quanta International Limited
British Virgin Islands
Quanta Kingsvale LP Ltd.
British Columbia
Quanta Lines Pty Ltd.
(f/k/a N.J. Construction Pty Ltd.)
Australia
Quanta Maine Services, LLC
Delaware
Quanta Middle East, LLC
Qatar
Quanta Pipeline Services, Inc.
QPS Flint Construction
QPS Flint Tank Services
QPS Professional Services
Quanta Environmental Solutions
Quanta EPC Services
Quanta Tank Services
Delaware
Quanta Power Australia Pty Ltd
Australia
Quanta Power Generation, Inc.
Delaware
Quanta Power Solutions India Private Limited
India
Quanta Power, Inc.
Delaware
Quanta Services Africa (PTY) Ltd.
South Africa
Quanta Services Australia Pty Ltd.
Australia
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 II LP
British Columbia
Quanta Services International Holdings LP
Alberta
Quanta Services Management Partnership, L.P.
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 Services Puerto Rico, LLC
Puerto Rico
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

7



Subsidiary Name and Names
Under Which Subsidiary Does Business
Jurisdiction of Incorporation or Formation
Quanta Tecnología do Brasil Ltda.
Brazil
Quanta Telecommunication Services, LLC
Quanta Telecom
Quanta Telecom Services
Quanta Telecommunication Services
Quanta Telecommunications Services, LLC
Delaware
Quanta Utility Engineering Services, Inc.
(f/k/a Utilimap Corporation)
Utility Line Management Services, Inc.
Missouri
Quanta Utility Installation Company, Inc.
Delaware
Quanta Utility Operation, LLC
Delaware
Quanta West, LLC
(f/k/a Quanta Services West, LLC)
Delaware
Quantecua Cia. Ltda.
Ecuador
R. R. Cassidy, Inc.
Louisiana
Realtime Engineers, Inc.
(f/k/a Infrasource Engineers, Inc.)
Infrasource Engineering Company, PC
Delaware
Realtime Utility Engineers, Inc.
(f/k/a Infrasource Engineering Company)
Wisconsin
Redes Andinas de Comunicaciones S.R.L.
Peru
RMS Holdings, LLC
RMS Holdings, LLC (Delaware)
RMS Welding Systems
Rms Welding Systems LLC
RMS Welding Systems LLC
RMS Welding Systems, LLC
Rms Welding, LLC
Delaware
Road Bore Corporation
Hawaii
Service Electric Company
(f/k/a Dillard Smith Construction Company)
P.D.G. Electric
Service EC (DE), Inc.
Service Electric Company (DE)
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.
Specialty Tank Services Limited Partnership
Specialty Tank Services, L.P.
Specialty Tank Services, Limited Partnership
Specialty Tank Services, LP
Specialty Tank Services, Ltd. (LP)
Specialty Tank Services, Ltd. Limited Partnership
Specialty Tank Services, Ltd. LP
Specialty Tank Services, Ltd., L.P.
Specialty Tank Services, Ltd., LP
Texas Specialty Tank Services, Ltd. LP
Texas
Stronghold General, LLC
Texas
Stronghold Holdings (BVI) Limited
British Virgin Islands

8



Subsidiary Name and Names
Under Which Subsidiary Does Business
Jurisdiction of Incorporation or Formation
Stronghold Inspection, Ltd.
Stronghold Inspection Limited Partnership
Stronghold Inspection Ltd, L.P.
Stronghold Inspection, L.P.
Stronghold Inspection, Limited Partnership
Stronghold Inspection, Lp
Stronghold Inspection, Ltd. Limited Partnership
Stronghold Inspection, Ltd., L.P.
Texas
Stronghold Specialty General, LLC
Texas
Stronghold Specialty, Ltd.
Stronghold Specialty, Ltd. Limited Partnership
Texas
Stronghold Tower Group, Ltd.
Stronghold Tower Group, LP
Stronghold Tower Group, Ltd, LP
Stronghold Tower Group, Ltd., LP
Texas
Stronghold VI, LLC
U.S. Virgin Islands
Stronghold, Ltd.
Stronghold Management Holdings, LP
Stronghold, Limited Partnership
Stronghold, Ltd. Limited Partnership
Texas
Subterra Damage Prevention Specialists Ltd.
Canada
Summit Line Construction, Inc.
Summit Line Construction
Utah
Sumter Utilities, Inc.
Delaware
T. G. Mercer Consulting Services, Inc.
Texas
TC Infrastructure Services Ltd.
British Columbia
The Aspen Utility Company, LLC
The Aspen Utility Company, LLC
Texas
The ComTran Group, Inc.
Georgia
The Hallen Construction Co., Inc.
New York
The Ryan Company, Inc.
Ryan Company, Inc. of Massachusetts
Ryan Company, Inc.(The)
Ryan Company, Inc., The
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 (FN)
The Ryan Company of Massachusetts, Inc.
The Ryan Company, Inc. (Massachusetts)
The Ryan Company, Inc. of Massachusetts
The Ryan Company, Incorporated Electrical Contractors
Massachusetts
TurnKey Automation, Ltd.
TurnKey Automation Limited Partnership
TurnKey Automation, Limited Partnership
Turnkey Automation, Ltd. L.P.
TurnKey Automation, Ltd. Limited Partnership
Turnkey Automation, Ltd. LP.
TurnKey Automation, Ltd., Limited Partnership
TurnKey I&E, Ltd.
Texas
Underground Construction Co., Inc.
Delaware Underground Construction Co.
Ucc - Underground Construction Co.
UCC Underground Construction Co., Inc.
Underground Construction Co., Inc. (Delaware)
Delaware

9



Subsidiary Name and Names
Under Which Subsidiary Does Business
Jurisdiction of Incorporation or Formation
Underground Electric Construction Company, LLC
Delaware
Utility Training Services Corporation
Idaho
Valard Construction Australia Pty Ltd
Australia
Valard Construction (Ontario) Ltd.
Ontario
Valard Construction (Quebec) Inc.
Quebec
Valard Construction 2008 Ltd.
Alberta
Valard Construction LP
Alberta
Valard Construction, LLC
Valard
 Delaware
Valard Equipment (AB) Ltd.
British Columbia
Valard Equipment GP Ltd.
Alberta
Valard Equipment Limited Partnership
Alberta
Valard Geomatics (Ontario) Ltd.
Ontario
Valard Geomatics BC, Ltd.
(f/k/a Valard Land Surveying Ltd.)
British Columbia
Valard Geomatics Ltd.
Alberta
Valard Mechanical Ltd.
British Columbia
Valard Norway AS
Norway
VALARD Polska sp. Z o.o.
Poland
Valard Sweden AB
Sweden
Valard Zagreb d. o. o.
Croatia
Winco, Inc.
Winco Powerline Services
Winco Powerline Services Inc.
Winco Powerline Services, Inc.
Winco, Inc. an Oregon Based Corporation
Winco, Inc. D/B/A Winco Powerline Services
Winco, Inc. DBA Winco Services Inc.
Winco, Inc. which will do business in California as: Winco Helicopters
Oregon

10