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American Transmission Co. Overview
Waukesha, WI
501 to 1000 employees
Company - Private
Oil, Gas, Energy & Utilities
$500 million to $1 billion (USD) per year
American Transmission Co. was founded in 2001, as the first multi-state, transmission-only utility in the United States. Unlike most other utilities, we have a single focus: transmission. Our transmission system allows energy producers to transport electric power from where ... Read more

Mission: Our mission is to provide reliable electric transmission service to our customers. As a public utility whose infrastructure serves as the link in transporting electricity to millions of electricity users, ATC has duties and responsibilities ... Read more

Company Updates

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    American Transmission Co.

    Posted on June 8, 2017 6/8/17 Plants and flowers that help birds, butterflies and bees are growing strong at the Milwaukee County Zoo. That's because kids and families worked with gardening expert and horticulturist Melinda Myers to plant pollinator-friendly vegetation at Party for the Planet in May.

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American Transmission Co. – Why Work For Us?

American Transmission Co. was founded in 2001, as the first multi-state, transmission-only utility in the United States. Unlike most other utilities, we have a single focus: transmission. Our transmission system allows energy producers to transport electric power from where it’s generated to where it’s needed. It’s similar to the interstate highway system with high-voltage electricity traveling on the transmission system wires like vehicles on the highway.

 ATC provides electric transmission service in an area from the Upper Peninsula of Michigan, throughout the eastern half of Wisconsin and into portions of Illinois. Our more than 9,540 miles of high-voltage transmission lines and 548 substations provide communities with access to local and regional energy sources.

We operate our system as a single entity, providing comparable service to all of our customers. Our customers include electricity producers and electric distribution companies who count on ATC to move power from where it’s produced to where it’s needed in the homes and businesses they serve.

Key facts

  • Grew from $550 million in assets in 2001 to $4.4 billion
  • Upgraded more than 1,944 miles of transmission line, built more than 620 miles of new line and improved 170 substations
  • Connected 6,000 megawatts of new generation at 24 sites
  • Saved customers more than $100 million a year in reduced energy costs with access to the wholesale energy marketplace and lower line losses

Practicing safety makes perfect sense
ATC and its partners implement and sustain world-class safety practices that ensure the safety and health of its employees, contractors, our customers and the public.

Excavator safety crucial near overhead, underground transmission lines
Our 2016 Excavator Safety video below demonstrates how we work safely near underground transmission lines and fiber optic lines.

Our 2011 Excavator Safety video below demonstrates how we work safely near overhead lines.

For more information on how to work safely around the transmission system, or to schedule an ATC representative to speak to your group, email

ATC compliant with arc-flash hazard safety requirements
ATC complies with the Public Service Commission of Wisconsin’s requirement for electrical equipment owners to assess the arc-flash hazards of their equipment and the various exposures of employees to a potential arc. We make this information available to those who need it, and it can be found on the Working with us page.

Innovation and collaboration power careers

At ATC, there’s a special energy among employees – a positive energy. Our employees make a difference by helping to power people’s lives. There’s a strong spirit of innovation, collaboration and open communication, which makes ATC a great place to work. Our employees like it here. In fact, we were named a Best Small and Medium Workplace in the United States by FORTUNE magazine and a Top Workplace by the Milwaukee Journal Sentinel for the past two years.

ATC’s commitment statement:

ATC Management Inc. (ATC) is committed to providing equal employment opportunity to all individuals in compliance with all federal, state and local laws that prohibit employment discrimination on the basis of race, creed, color, religion, sex (including pregnancy), age, national origin, disability, veteran status, special disabled veteran status, marital status, sexual orientation, military status, genetic information or any other protected characteristic. Decisions in all phases of employment and employment related programs, and participation in social and recreational programs, will be made in accordance with these principles. This policy applies to all employment decisions including, but not limited to, recruiting, hiring, training, promotions, pay practices, benefits, disciplinary actions and terminations.

If an individual has reason to believe that he or she has been subjected to discrimination under any employment laws or regulations or believes that another individual is being subjected to such conduct, the individual should promptly report the conduct to the Ethics & Compliance Hotline at 1-877-888-0002. The Ethics & Compliance Hotline provides individuals with an opportunity to anonymously ask questions or report concerns and is available 24 hours a day, seven days a week.

Our workplace culture

As the first transmission-only electric utility in the U.S., ATC represents a new generation of utilities. Our sole purpose is to operate the transmission grid to meet the needs of our utility customers and all electricity users in the areas we serve.

As we grow, our priorities are to operate the electric grid reliably, grow our assets and improve our infrastructure. We are breaking new ground every day by creating new processes, systems and solutions. We recognize that our employees are great sources of innovative ideas. We encourage creativity, collaboration and communication.

Career development

At ATC, you’ll put your skills to work immediately contributing to the operation of the critical infrastructure that powers people’s lives. You have the opportunity to grow by developing a personal development plan that may lead to new experiences and advancement within the company. Independent workers and innovative thinkers succeed here. We encourage our employees to approach their work with confidence and creativity.

Work-life balance

In today’s fast-paced world, there can be many demands on your time. Balancing work and family is challenging for many and is an important issue when choosing an employer. At ATC, our generous vacation allowance and paid time off for personal appointments help employees achieve that balance.

American Transmission Co. Reviews

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Mike Rowe
11 Ratings
  • "Remarkable Company to Work For"

    Star Star Star Star Star
    • Work/Life Balance
    • Culture & Values
    • Career Opportunities
    • Comp & Benefits
    • Senior Management
    Current Employee - Anonymous Employee in Pewaukee, WI
    Current Employee - Anonymous Employee in Pewaukee, WI
    Positive Outlook
    Approves of CEO

    I have been working at American Transmission Co. full-time (More than 3 years)


    Very welcoming environment, Flexible work arrangements, great benefits, good opportunities for growth, sharing and collaborative environment. All ideas are welcomed, no pre-judging.


    Can be hard at times to get in front of leaders to move things along, but that is common everywhere.

    Advice to Management

    Schedule time on your calendars to be visible to employee population outside of meetings. Just a walk about the office for impromptu conversations.

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American Transmission Co. Photos

American Transmission Co. photo of: New Substation
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American Transmission Co. Interviews



Getting an Interview

Getting an Interview





    Engineering Co-Op Interview

    Anonymous Interview Candidate
    No Offer
    Negative Experience
    Average Interview


    I applied through college or university. The process took 2+ weeks. I interviewed at American Transmission Co..


    Initial interview was a phone interview. The first one was cancelled at the last minute because another interview was scheduled at the time of my interview.

    When we did schedule the next one, I was not impressed with the interviewer. She was rushing through the interview and gave me very negative thoughts about my questions I was asking. The impression I had was that it was the end of the week and she just wanted to go home I did not pursue after this. It was very unprofessional.

    Interview Questions

    • Describe a situation where you had a difficult time and how you were able to overcome it.   Answer Question
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American Transmission Co. Awards & Accolades

  • Top Workplaces in Southeastern Wisconsin (#4), Milwaukee Journal Sentinel, 2015
  • 50 Best Small and Medium Sized Companies to Work For, Fortune, 2014
  • Top Workplaces in Southeastern Wisconsin, Milwaukee Journal Sentinel, 2014
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