Insights

Strong Infrastructure Investment American Transmission Co. has recently invested over $2.63 billion in transmission lines and substations, highlighting their ongoing need for advanced electrical infrastructure and maintenance services, creating opportunities for technology upgrades, equipment supply, and engineering solutions.

Expanding Regional Footprint The company's expansion into Michigan with new transmission lines and facilities in Wisconsin presents a chance to offer localized support services, project management, and infrastructure modernization tailored to their increased operational scale.

Sustainability Commitment ATC's mission to transition to a sustainable energy future indicates a strategic focus on renewable energy integration, opening avenues for clean energy technology providers, grid modernization solutions, and renewable project consultancy.

Community Engagement Partnerships with STEM education initiatives and local organizations demonstrate ATC’s commitment to community development, providing potential for educational tools providers, corporate social responsibility collaborations, and local workforce training solutions.

Technological Advancement The company's use of advanced tech stacks such as Microsoft Azure, Splunk, and Oracle Primavera suggests a high-tech environment, presenting potential for cybersecurity, data analytics, and cloud services vendors to support operational efficiency and system security.

ATC Tech Stack

ATC uses 8 technology products and services including Splunk Enterprise, Tableau, Microsoft SQL Server, and more. Explore ATC's tech stack below.

  • Splunk Enterprise
    Advanced Analytics And Data Science
  • Tableau
    Business Intelligence
  • Microsoft SQL Server
    Database
  • OneDrive
    File Sharing
  • ServiceNow
    Miscellaneous
  • Microsoft Windows
    Operating Systems
  • Nutanix
    Server Hardware
  • Animate.css
    UI Frameworks

Media & News

ATC's Email Address Formats

ATC uses at least 1 format(s):
ATC Email FormatsExamplePercentage
FLast@atcllc.comJDoe@atcllc.com
92%
First.Last@atcllc.comJohn.Doe@atcllc.com
6%
F.Last@atcllc.comJ.Doe@atcllc.com
1%
Last@atcllc.comDoe@atcllc.com
1%

Frequently Asked Questions

Where is ATC's headquarters located?

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ATC's main headquarters is located at po Box 47 Waukesha, Wisconsin 53187 United States. The company has employees across 3 continents, including North AmericaAsiaEurope.

What is ATC's phone number?

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You can contact ATC's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is ATC's stock symbol?

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ATC is a publicly traded company; the company's stock symbol is ATC.

What is ATC's official website and social media links?

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ATC's official website is atcllc.com and has social profiles on LinkedIn.

What is ATC's NAICS code?

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ATC's NAICS code is 22 - Utilities.

How many employees does ATC have currently?

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As of June 2026, ATC has approximately 845 employees across 3 continents, including North AmericaAsiaEurope. Key team members include Chief Executive Officer: M. T.Chief Executive Officer: T. A. M.Chief Executive Officer, Managing Partner: T. F.. Explore ATC's employee directory with LeadIQ.

What industry does ATC belong to?

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ATC operates in the Utilities industry.

What technology does ATC use?

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ATC's tech stack includes Splunk EnterpriseTableauMicrosoft SQL ServerOneDriveServiceNowMicrosoft WindowsNutanixAnimate.css.

What is ATC's email format?

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ATC's email format typically follows the pattern of FLast@atcllc.com. Find more ATC email formats with LeadIQ.

ATC

UtilitiesWisconsin, United States501-1000 Employees

ATC is connecting you with a sustainable energy future. We are a transmission-only electric utility that helps keep the lights on, businesses running and communities strong in portions of Wisconsin, Michigan, Minnesota and Illinois. As an owner and operator of almost 10,000 miles of transmission lines and more than 560 substations, we help meet the power needs of more than 5 million customers in Midwestern communities. 

Our mission is to perfect our business and lead the transition to a sustainable energy future. 

We live a culture of one team – connected by purpose, curiosity and positive energy. 

We are guided by our values: We Care, We Challenge, We Commit, We Communicate, We Compete and We Celebrate.

Section iconCompany Overview

Headquarters
po Box 47 Waukesha, Wisconsin 53187 United States
Phone number
Website
atcllc.com
Stock Symbol
ATC
NAICS Code
22 - Utilities
Employees
501-1000

Section iconFunding & Financials

  • $1B$10B

    ATC's revenue is estimated to be in the range of $1B$10B

Section iconFunding & Financials

  • $1B$10B

    ATC's revenue is estimated to be in the range of $1B$10B

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