ATC
Highly Engaged Employees

Q: What industry does ATC belong to?

ATC is in the industry of: Electricity, Oil & Gas , Energy, Utilities & Waste

Q: What is ATC competition?

ATC top competitors include: Georgia Transmission , ITC Holdings , MISO , New York ISO

Electricity, Oil & Gas · Wisconsin, United States · 501-1,000 Employees

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Overview

Headquarters

PO Box 47, Waukesha, Wisconsin, 53187, U...

Phone Number

(262) 506-6700

Website

www.atcllc.com

Revenue

$751.2 Million

Industry

Electricity, Oil & Gas

Energy, Utilities & Waste

ZI Rank: 10

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ZI Rank

ATC’s Company Summary

American Transmission Co. (ATC) is a critical infrastructure provider specializing in the ownership and operation of electric transmission systems across the Upper Midwest. Established in 2010, the company is headquartered in Waukesha, Wisconsin, and operates within the Electricity, Oil & Gas and Energy, Utilities & Waste Treatment sectors. ATC's core business revolves around managing and developing high-voltage electric transmission infrastructure, ensuring reliable energy delivery across its service territories. The company's strategic focus is on enhancing grid reliability, capacity, and efficiency to meet the evolving energy demands of the region. Its operations are vital for the stability and interconnectedness of the power grid, supporting the transmission of electricity from generation sources to distribution networks.

With a dedicated workforce of 500 - 1,000 employees, ATC manages a significant operational footprint. The company's single primary location in Waukesha serves as the central hub for its extensive transmission network. ATC's commitment to operational excellence is supported by its team, and interested parties can learn more by accessing Meet ATC's team to understand the expertise driving its infrastructure development and maintenance. The company's product and service offerings are centered on the physical transmission of electricity, including the development, construction, and maintenance of transmission lines and related assets, ensuring the integrity and performance of the high-voltage electric transmission system.

ATC operates in a competitive landscape, with key rivals including ITC Holdings, MISO, and PJM Interconnection, all significant entities in the North American energy transmission market. The company generates substantial revenue, reported at $751.2M, underscoring its scale and marketView more...

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The summary is generated by AI and may contain inaccuracies. Verify critical information with official sources.

About ATC

American Transmission Co. is a Wisconsin-based company that owns and operates the electric transmission system in portions of the Upper Midwest. The company was founded in 2001 and is headquartered in Waukesha, Wisconsin.Explore more

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Popular SearchesAtc LLCAtcSIC Code 49,491NAICS Code 22,221Show more

ATC Org Chart

Teresa Mogensen

Chair, President and Chief Executive Officer

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Kate Meyer

Chief Operating Officer & Executive Vice Pres...

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Michael Hofbauer

Executive VP & Chief Financial Officer

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Bill Irwin

President

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Lori Lorenz

Executive Vice President & Chief Administrati...

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Gregory Levesque

Regional VP, Affairs & Strategic Siting

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Project Performance Vice President, Supply Ch...

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Vice President

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Vice President, System Operations

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Vice President, Operations

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Vice President

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Compare Similar Companies to ATC

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Company Name

Revenue

Number of Employees

Type

Funding

Founded In

Top Executive

ATC

$751.2M

501-1,000

Private

2010

Teresa MogensenChair, President and CEO

ITC Holdings

$1.5B

501-1,000

Private

$1.5B

2003

Thomas WoodsCEO & President

MISO

$447.4M

1K - 5K

Private

1998

Kristina TridicoRegulatory Deputy General Counsel

PJM Interconnection

$356.8M

501-1,000

Private

1927

Zulkarnain IdrisCEO

Southwest Power Pool

$196.5M

501-1,000

Private

1941

Lanny NickellPresident & CEO

New York ISO

$182M

501-1,000

Private

1999

Richard DeweyPresident & CEO

Georgia Transmission

$64M

201-500

Private

1997

Barbara HamptonPresident & CEO

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Among all Energy, Utilities & Waste companies

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Activity Insights

ATC is experiencing very low activity levels compared to other companies in the Energy, Utilities & Waste sector.

What does this means?

ATC is drawing exceptional interest within the Energy, Utilities & Waste industry, suggesting notable developments or strong market momentum, learn more about ATC.

ATC Tech Stack

A closer look at the technologies used by ATC

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Most Recent Scoops

Open Position

ATC is currently seeking a Construction Project Manager. (Cottage Grove, Wisconsin, United States)

Open Position

ATC is currently seeking a Senior Project Manager. (Pewaukee, Wisconsin, United States)

Person-Based

Teresa Mogensen 25-year success is driven by its employees' expertise, care, and commitment.

Employee Engagement, Employee Retention

Person-Based

Ellen Nowak expressed disappointment with a decision that she believes will increase costs for Wisconsin ratepayers, arguing that incumbent utilities would have better spread operational costs for new transmission lines across a wider region.

Open Position

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ATC News & Media

American Transmission Co. announces two new appointments to board of directors
PEWAUKEE, Wis., Oct. 20, 2021 /PRNewswire/ -- Suzanne Allen, president of Allen CFO Services LLC, and Scott Mair, president – AT&T Network Engineering & Operations, have been appointed to American Transmission Co.'s board of directors, effective Sept. 1, 2021. Allen and Mair's...
www.prnewswire.com
Damaged Straits of Mackinac cables being replaced
Electric transmission cables in the Straits of Mackinac are being replaced after an anchor strike incident in 2018 severed two of the six cables.
www.detroitnews.com
Kishwauketoe to plant native species with American Transmission Company grant
WILLIAMS BAY — The Kishwauketoe Nature Conservancy has received a $3,597 grant which will be used to plant native plants in place of invasive species in the conservancy.
www.lakegenevanews.net

Top Electricity, Oil & Gas Companies

Frequently Asked Questions Regarding ATC

What is ATC's official website?

ATC's official website is www.atcllc.com

What is ATC's Revenue?

ATC's revenue is $751.2 Million

What is ATC's SIC code?

ATC's SIC: 49,491

What is ATC's NAICS code?

ATC's NAICS: 22,221

How many employees does ATC have?

ATC has 501-1,000 employees

What industry does ATC belong to?

ATC is in the industry of: Electricity, Oil & Gas, Energy, Utilities & Waste

What is ATC competition?

ATC top competitors include: Georgia Transmission, ITC Holdings, MISO, New York ISO

What technology does ATC use?

Some of the popular technologies that ATC uses are: Microsoft IIS, Freshservice, Zingfit, WordPress.org

Who is the CFO of ATC?

ATC's CFO is Michael Hofbauer

How do I contact ATC?

ATC contact info: Phone number: (262) 506-6700 Website: www.atcllc.com

What does ATC do?

What are ATC social media links?

ATC Linkedin page ATC Twitter page ATC Facebook page

Is ATC a public company?

ATC is private company therefore does not currently have an official ticker symbol

See more information about ATC

ATC Latest Hires and Their Positions

ATC is expanding and recently hired new employees. Here are the latest additions to the team.

Jonathan Schmidt

Consultant Safety and Human Performance

Joined Feb 1, 2026

Phone

Bryan Resch

Senior Scheduler

Joined Feb 1, 2026

Phone

Gage Bean

Senior IT Auditor

Joined Jan 1, 2026

Phone

Julie Sofen

Program Manager, Transmission Routing & Siting

Joined Jan 1, 2026

Phone

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