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List of National Grid subsidiaries

Verified insights into National Grid’s global corporate structure and subsidiaries.

National Grid plc is a multinational energy company headquartered in United Kingdom. Established in its current form in 1990, National Grid manages an extensive corporate network with 574 subsidiaries globally. This ownership data is part of CompanyData.com’s verified corporate hierarchy database, covering millions of companies across various industries worldwide.

Location spread of National Grid’s subsidiaries

National Grid holds 574 subsidiaries in 6 countries, with 152 subsidiaries in the United Kingdom (26.5%), 415 in the United States (72.3%), and a small presence of 1 company in the Luxembourg. This distribution highlights its strong positioning in the North American and UK energy markets, covering both transmission and distribution of electricity and gas.

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  • Global ownership data

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  • Structured hierarchies

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Top Subsidiaries and Companies Owned by National Grid

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Company Name Country City Address 1 Address 2 State/Province Postal Code Website Founding Year Yearly Revenue in U.S. Dollars Employees Total Business Legal Type - Description Number of Companies in Group Company Registration Number Email Phone Number UniqueID
1
National Grid USA Service Company, INC.
USA
Jamaica
8967 162nd St
N/A
Queens
11432
nationalgridus.*****
N/A
$0
249
574
N/A
********@******.***
+1*****23
0196201256
2
National Grid USA Service Company, INC.
USA
Holtsville
180a Morris Ave
N/A
Suffolk
11742
nationalgridus.*****
N/A
$0
207
574
N/A
******@********.***
+1*****53
0942468751
3
Goldenrod Wind Farm, LLC
USA
Wilmington Manor
1209 N Orange St
N/A
New Castle
19801
N/A
2020
$0
0
Corporation
574
N/A
*********@***.***
0229996691
4
Mustang Ridge Wind Farm, LLC
USA
Wilmington Manor
1209 N Orange St
N/A
New Castle
19801
N/A
N/A
$0
0
Corporation
574
7176182
******@********.***
0230004473
5
Blaze Solar, LLC
USA
Wilmington Manor
1209 N Orange St
N/A
New Castle
19801
N/A
N/A
$0
0
Corporation
574
7357290
**********@****.***
0229981487
6
Knox Solar, LLC
USA
Bloomington
8400 Normandale Lake Blvd Ste 1200
N/A
Hennepin
55437
N/A
2020
$0
0
Proprietorship
574
N/A
************@****.***
0230002619
7
National Grid Development Holdings CORP.
USA
Brooklyn
1 Metrotech Ctr
N/A
Kings
11201
nationalgrid.*****
2009
$11,890,004
300
Corporation
574
N/A
*****@***.***
+1*****00
0941521058
8
National Grid USA Service Company, INC.
USA
Syracuse
7496 Round Pond Rd
N/A
Onondaga
13212
nationalgridus.*****
N/A
$0
290
574
N/A
***********@*******.***
+1*****72
0152747051
9
National Grid USA Service Company, INC.
USA
Hicksville
100 E Old Country Rd
N/A
Nassau
11801
N/A
N/A
$0
166
574
N/A
***********@******.***
+1*****68
0940044811
10
Niagara Mohawk Power CORPORATION
USA
Malone
139 Finney Blvd
N/A
Franklin
12953
N/A
N/A
$0
103
574
N/A
*****@********.***
0238490737
11
National Grid
USA
Brooklyn
370 Vandervoort Ave
N/A
Kings
11211
N/A
N/A
$0
22
574
N/A
**********@********.***
+1*****59
0191443500
12
National Grid Electric Services LLC
USA
Brooklyn
1 Metrotech Ctr
N/A
Kings
11201
nationalgrid.*****
2009
$4,078,147
20
Corporation
574
2257282
*****@*******.***
+1*****00
0941521081
13
Nantucket Electric Company
USA
Hopedale
245 S Main St
N/A
Worcester
01747
N/A
N/A
$0
7
574
N/A
******@******.***
+1*****00
0222413007
14
Boston Gas Company
USA
Salem
20 Pierce Ave
N/A
Essex
01970
N/A
N/A
$0
6
574
N/A
*****@******.***
0198248440
15
Coneflower Solar, LLC
USA
Philadelphia
12 W Willow Grove Ave
N/A
Philadelphia
19118
N/A
2020
$315,337
5
Corporation
574
4180322
*********@****.***
0222333797
16
Fayette Solar, LLC
USA
Minneapolis
8400 Normandale Lake Blvd Ste 1200
N/A
Hennepin
55437
N/A
2018
$1,499,917
5
Corporation
574
1702876
************@****.***
0183600243
17
National Grid Port Jefferson Energy Centre LLC
USA
Port Jefferson
North End Beach St
N/A
Suffolk
11777
N/A
2002
$1,010,843
5
Corporation
574
N/A
******@********.***
+1*****00
0668112632
18
Sherco Solar 2, LLC
USA
Minneapolis
8400 Normandale Lake Blvd Ste 1200
N/A
Hennepin
55437
N/A
2020
$259,227
5
Corporation
574
1164353800021
***********@****.***
0161074418
19
Autauga Solar, LLC
USA
Minneapolis
8400 Normandale Lake Blvd Ste 12
N/A
Hennepin
55437
N/A
2020
$342,182
4
Corporation
574
7921215
************@****.***
0222268153
20
Fort Solar, LLC
USA
Bloomington
8400 Normandale Lake Blvd Ste 1200
N/A
Hennepin
55437
N/A
2024
$1,033,098
1
Corporation
574
7921231
************@*******.***
+1*****19
0230485650
21
Pasture Peaks Wind Farm, LLC
USA
Bloomington
8408 Normandale Lake Blvd Ste 1200
N/A
Hennepin
55437
N/A
2024
$1,052,830
1
Corporation
574
N/A
***********@*******.***
+1*****19
0230484942
22
National Grid Partners INC.
USA
Brooklyn
119 Green St
N/A
Kings
11222
nationalgridus.*****
N/A
$0
1
574
N/A
************@*****.***
+1*****04
0942429273
23
Hale County Solar, LLC
USA
Wilmington Manor
1209 N Orange St
N/A
New Castle
19801
N/A
N/A
$0
0
Corporation
574
3714918
*****@***.***
0229996212
24
Hill River Solar, LLC
USA
Wilmington Manor
1209 N Orange St
N/A
New Castle
19801
N/A
2020
$0
0
Corporation
574
N/A
******@*****.***
0229995606
25
Jack Rabbit Wind, LLC
USA
Wilmington Manor
1209 N Orange St
N/A
New Castle
19801
N/A
2016
$0
0
Corporation
574
6223208
*******@***.***
0229996675
26
Maverick Wind Farm, LLC
USA
Wilmington Manor
1209 N Orange St
N/A
New Castle
19801
N/A
2018
$0
0
Corporation
574
7176191
******@********.***
0230005578

Companies by Employee Size

  • 0 or Unknown 263
  • 1-4 90
  • 5-9 41
  • 10-19 32
  • 20-49 28
  • 50-99 24
  • 100-199 44
  • 200-499 30
  • 500-999 11
  • 1.000-4.999 9
  • 5.000-9.999 1

Companies by Revenue Size (in USD)

  • 0 or Unknown 410
  • 1 to 100.000 1
  • 100.001 to 499.999 35
  • 500.000 to 999.999 14
  • 1.000.000 to 4.999.999 55
  • 5.000.000 to 9.999.999 11
  • 10.000.000 to 49.999.999 12
  • 50.000.000 to 99.999.999 7
  • 100.000.000 to 499.999.999 11
  • 500.000.000 to 999.999.999 5
  • 1.000.000.000 or more 12
Download Data

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Discover National Grid's Global Corporate Structure

National Grid’s ownership map is part of our extensive company ownership database, which includes detailed corporate hierarchies across 200 countries and jurisdictions. This shows how the parent company connects to its subsidiaries and affiliates with verified data on global business groups. See how our dataset functions and request a personalized sample.

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National Grid Company Facts

Where is National Grid headquartered?

National Grid is headquartered in London, United Kingdom.

How many subsidiaries does National Grid have?

National Grid owns 574 subsidiaries across 6 countries.

Who owns National Grid?

National Grid plc is publicly traded with no single majority shareholder.

Is National Grid a UK company?

Yes, National Grid plc is incorporated in the UK (company no. 0331397083).

How many people work for National Grid?

National Grid employs approximately 20,000 people worldwide.

Corporate family tree

Why Ownership Structure Data Matters

Understanding ownership is important to see how companies connect and function. Our corporate hierarchy data helps you follow relationships between parent companies, subsidiaries, and shareholders, showing control, structure, and risks within any global group. Whether you’re reviewing National Grid or another multinational, this insight supports compliance verification, market studies, and better CRM data organization. With verified ownership records of over 380 million companies worldwide, CompanyData.com offers a clear picture of who controls whom across industries and countries.

How We Map Global, National, and Local Headquarters

At CompanyData.com, every company profile – like National Grid – is mapped using our three-tier hierarchy system: Global, National, and Local headquarters. This method shows how each entity fits into its broader corporate group.

Our Three Levels Explained

  • Global Headquarters — National Grid plc acts as the global headquarters for the National Grid group, with its main office based in London, United Kingdom. It oversees all other companies in the group.
  • National Headquarters — Country-level entities manage business operations locally and report to the global parent. Examples include National Grid USA, National Grid UK, and National Grid [Country] subsidiaries.
  • Local Headquarters — Regional branches handle operational sites, customer services, and regulatory compliance within their specific markets.

Each entity has a unique ID, allowing you to link subsidiaries to parent firms, trace ownership, and integrate data into your systems.

How Ownership and Control Are Shown

Control is based on ownership percentage. When a company owns more than 50% of another, we classify it as a controlled subsidiary. Our data focuses on these majority-owned relationships to clearly map corporate hierarchies. This system gives a transparent view of complex ownership networks like National Grid’s and can be applied to any global group.

Why This Is Important

This model helps identify actual decision-makers in the National Grid group, simplifies compliance checks, and supports mergers and acquisitions or risk assessments. By mapping each company with confirmed ownership data, CompanyData.com lets you explore National Grid’s corporate structure easily and understand how global companies organize themselves. With over 41 million companies linked across 200 countries and jurisdictions, our database delivers clarity and transparency to teams working with global corporate networks.

 

National Grid

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National Grid ownership & subsidiary data – FAQs

You can access National Grid company data through API, bulk files, or the Bold Platform. We create custom datasets based on your target countries, industries, and company profiles. After you share your criteria, our experts prepare a tailored dataset and send a free quote with record counts and sample data within 24 hours. Once approved, we deliver your data quickly in your preferred format — via Excel, API, bulk file, or directly in the Bold Platform.

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The price of our National Grid company data varies based on your chosen details and delivery method. Whether you need a list of subsidiaries or a full dataset via API or bulk files, we offer flexible pricing to suit your needs. You can request a free quote and record count within 24 hours — our team will provide transparent pricing and a free sample of 10 company contacts. At CompanyData.com, you only pay for the verified global data you need.

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At CompanyData.com, you can access detailed, verified data on National Grid plc and all its subsidiaries, updated daily. This includes company names, registration details, locations, industry classifications, financial indicators, and key contacts. National Grid has a revenue of $20.77 billion and a global corporate structure including subsidiaries mainly in the United Kingdom, the United States, the Cayman Islands, Luxemburg, and Malta. You can download the data via the Bold Platform, API, or bulk file delivery. Our database offers 100% worldwide company coverage, ensuring complete and accurate insights.

At CompanyData.com, our data comes from verified global business sources to ensure accuracy and full coverage. We combine official registers, financial filings, LEI records, trusted partners, and verified company websites. All data is cross-checked and validated by our experts, ensuring it’s accurate, up-to-date, and GDPR-compliant.

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