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We leverage our voice with over 800 leading CEOs to advance diversity, equity and inclusion.

Engage. Empower. Equity. Everyday. INTREN believes that engagement, empowerment, diversity, and equity result in higher overall performance and a more creative work environment.  To cultivate that work environment, we are committed to creating a place where all feel valued and respected. We recognize that a variety of business, life, and cultural experiences results in more innovative solutions for our customers. We believe that INTREN’s commitment to increase diversity, equity and inclusion is essential to changing the face of construction and OutPerforming. Everyday.INTREN’s “Changing the Face of Construction” is not a social experiment - and it’s more than just having a female CEO, and women-controlled board. It’s an aggressive program tightly woven into the fabric of the INTREN mission that supports a more inclusive workplace for all employees, our communities and society at large.

Though diversity of thought and services are integral to INTREN, what really sets us apart is being open to new ideas and ways of thinking while establishing a workplace that represents the communities we serve.

Turning Intention Into Action

The INTREN environment is powerful and engaging. Employees at all levels, as well as their contributions, are highly regarded. Equity and well-being are foremost. From the very beginning and continuing to this very day, INTREN has forged unique and fulfilling connections with contractors and suppliers to get the job done. These strategic partnerships continually evolve with terms that go well beyond the legal agreement or the aims of top management.

Whether we’re uplifting other women and minority-owned businesses through outreach and mentorship, increasing job opportunities for minorities through programs like Chicago-based CONSTRUCT, or actively participating with our local communities, we believe that the best way to move forward is to focus outward.

More than Rhetoric

More than rhetoric, we believe that each individual should have full opportunity to thrive within our company. Because eliminating unconscious bias is a transformative process, we conduct regular employee training sessions to help instill better leadership and deal with issues of equity in the workplace. If we are not attentive to the differences between Diversity, Equity and Inclusion, our efforts may be in vain.

  • Diversity: We recognize all ways in which people differ as a critical component for a growing business.
  • Equity: We practice fair treatment, access, opportunity and advancement for all people.
  • Inclusion: We create environments in which people feel welcomed, respected, supported and valued.

INTREN pursues a strategy that integrates diversity, equity and inclusion into everything we do. We continue to build a diverse and inclusive culture that encourages, supports, and celebrates the diverse voices of our employees.

INTREN is a first-tier, women’s business enterprise (WBE) - the largest owned and operated in the utility contractor sector, with a robust second tier Supplier Diversity program. With over 70 actively registered Minority and Women business enterprise (MWBE) companies to date, our suppliers have undergone rigorous screening, including the highest safety and quality standards.

Encouraging Collective Action

Diversity, equality, and inclusion is a business development and  talent retention strategy for  innovation, creativity and advanced  customer solutions. We’re now  taking it one step further and adding  ‘Equality’ to our commitment.   In today’s business environment,  it’s no longer just the right  thing to do. When you articulate  your business strategy as including  a talent strategy, it has more teeth  and affects every value and every  aspect of our company.We realize that diverse suppliers may not yet have the capability to service a major corporate utility contract on their own. However, they can contribute goods and services as a Tier 2 supplier. Our continuous path to expand our supplier diversity program spend encourages the partnership with diverse suppliers such as:

  • Minority-owned
  • Women-owned
  • Veteran-owned
  • LGBTQ-owned
  • Service-disabled veteran owned
  • SBA-defined small business vendors as suppliers in the economic activities of the company

The Foundation of Our Success

As a natural progression for future growth, INTREN has embraced diversity, equity and inclusion at its core from its inception. It’s in our DNA and the very foundation of who we are as a company. We believe that a diverse workplace fosters creativity and innovation, while allowing the company and employees to reach their full potential.

We work daily in building an inclusive environment where all people are valued, respected and empowered. Our mission is to work continuously in building and enabling a skilled, diverse workforce ready and well equipped to deliver for our customers.

Diversity Starts at the Top

We recognize that we have a voice, and that our mission can only be achieved if we foster a culture of diversity, equality and inclusion that starts at the top. With our Founder, Loretta Rosenmayer at the helm as Chairwoman of the Board, we are proud to include a wide and diverse listing of industry leaders guiding us along the way on our Board of Directors:

  • Kelly Tomblin, CEO INTREN
  • Christina Miller, former Miller Construction CEO
  • Sherina Maye Edwards, Partner - Quarles & Brady LLP
  • Norma Corio, Senior Managing Director One Equity Partners
  • Lance Rosenmayer, President, INTREN
  • JB Cherry, Senior Managing Director of One Equity Partners
  • Matthew Hughes Director, One Equity Partners

Our Ongoing Diversity Initiatives

Minority Job-Training Programs

    In 2012, grass-roots groups, contractors and politicians supported the Energy Infrastructure Modernization Act (EIMA) bill to rebuild Illinois. The challenge was with a workload increase, the existing labor pool demographics did not reflect the communities in which the work was done. However, INTREN’s Matthew Turk and Loretta Rosenmayer had an idea to create a program where minorities would be given an opportunity to train for entry-level construction positions; an opportunity they never may have had. After meeting with ComEd, where the concept was further developed, the CONSTRUCT program was born.

    Now, in its 7th year, CONSTRUCT has become a program powered by an alliance of companies, social service agencies and labor unions that are committed to removing barriers for minority individuals interested in the construction industry. The 9-week program offers diverse students annually job readiness and life skills training, information and guidance necessary to compete for good-paying, entry-level jobs in construction-related fields. INTREN has been committed to CONSTRUCT both financially and in time and training, since its launch.

  • CONSTRUCT-Like Programs

    INTREN is currently in joint efforts with several utilities to bring similar programs to other regions of the country

  • Nicor Career Academy
    As a founding sponsor in the Nicor Career Academy, INTREN played an integral role in training participants and supporting the program financially.

We are still recovering from the pain of our history, along with our experiences, our stories and our education. We have been taught in various ways, both consciously and unconsciously,  that there are significant differences between people with different colored skin. My life’s work has been about unity and equality and bringing down the barriers that divide us.
Employee Training & Programs

Training our employees on subjects, such as unconscious bias and historical education is vital to integrating DEI into the corporate culture. Whether it be race, gender, sexual preference or even age, it is up to every person to look inside themselves to discover where their biases may lie and adjust their patterns of thinking and eliminate any behaviors not conducive to an inclusive workplace.

At INTREN, there are also numerous ways for employees to get involved. With employees from coast-to-coast, it is vital to connect and engage across regions, where every one’s voice can be heard.

  • Culture Leadership Team
  • Diversity Council
  • Women’s POWER Group
  • Executive Women’s Group (WIN)
  • Women’s Mentoring Program

Supporting Over 250 Charitable Organizations

At INTREN, stewardship is just not a way of doing business, but a way of life. At the core is supporting minority organizations that lift other’s up and give them hope for a better tomorrow. For a complete listing of all our non-profit initiatives, learn more here.

We invite you to take the CEO Action pledge to act on Diversity & Inclusion

Your company can join INTREN’s CEO Kelly Tomblin and more than 800 CEOs of the world’s leading companies and business organizations that have committed to act and make change happen in their workplace!

Read more about the “ACT ON” pledge at

Click here to listen to Kelly Tomblin's interview about INTREN's diversity action on WGN Radio!

1920: Telephone lineman Gordon C. Miller creates his own company that perseveres through the Great Depressiona newspaper article about Gordon Miller

: The Miller Company is formally incorporated with Patrick Size during the era of Franklin D. Roosevelt's New Deal legislation

a series of photos from the Alaska telephone line construction
: Miller Construction Co. rises to prominence as an Indiana contractor by constructing the Alaska Highway Telephone Line for the US Army Corp of Engineers. Over 2,000 miles of communication lines were installed.

an early model space shuttle takes off while observers record the event
: In order to bring power to the NASA base at Cape Canaveral - the launch point for Gemini, Mercury, and Apollo missions - Miller Construction ran power lines through Florida swamps

: Miller receives its first woman-owned certification - the same year Loretta Rosenmayer and "Trench-It" received its WBE credentialsChris and Bill Miller stand in front of photos from the previous generations of Miller Construction

Three generations of Miller helmed the Miller Construction Company: Gordon, William, and Chris. Bill Miller, Chris' brother, recently retired as COO

Chris and Kelly's billboard announcing Miller's merge with INTREN
: INTREN and the Miller Construction Co. merge to become one of the largest owned and operated WBE specialty utility contractors in the country

INTREN Plans to Acquire Miller Construction Company

Why did INTREN join forces with Miller Construction Company?
INTREN is known for anticipating and fulfilling the needs of our customers and we are doing just that by broadening our capabilities through the acquisition of Miller Construction Company. By joining forces, we are continuing our evolution to serve customers in every business segment, wherever they need us geographically.

As a growing total utility-solutions provider, INTREN has sought out like-minded companies with deep expertise that broaden our geographic reach. As a venerated, family-owned business with a culture that perfectly matches INTREN’s, we are delighted to join forces with Miller Construction Company.

Like INTREN, Miller Construction is another woman-owned business that stands for exceptional safety, outstanding customer service, and excellence in our industry, along with a deep caring for their employees and their communities.

How will this affect INTREN and Miller customers?
Our customers can continue to count on what they have always counted on with INTREN and Miller. It is our vision that together, we will create a business that serves every need of every customer. Together, we’re bringing new and deeper innovation and creative solutions for our customers and we’re continuing to build on our platform.

As a WBE, why is this important?
As a woman-owned business, INTREN’s acquisition of Miller provides a unique offering in the marketplace. Utility companies often struggle to meet their goals of hiring diversity contractors. By joining forces, expanding the INTREN footprint and offering deeper and more varied services, we can better serve the needs of new and existing customers.

INTREN can now serve a customer wherever they need us. Joining with Miller shows that there are strong diverse companies in this industry, with the drive, vision and creativity to build a new and different offering to the workplace. With our focus on diversity of thought and creative solutions, we will create an innovative workplace.

What does the marketplace need to know?
We will be a complete full-service provider in the diversity space. There is not going to be another company like INTREN.
INTREN is creating a different kind of company, not just women-owned, but one that shares our values and vision of transforming the way business is done.

We’ll continue seeking out other companies with leaders who want to bring something unique to the marketplace and do well by doing good. It is easy to buy a company, but we are also searching for partners that align with the INTREN culture. Miller and INTREN are transparent and committed to building trust in the marketplace.

How are both INTREN and Miller’s culture similar?
Miller Construction is a third-generation, respected family business that aligns with our core values of safety, integrity, customer focus, employee empowerment and stewardship. INTREN and Miller have similar roots and are driven by excellence, and in doing power differently.

How will this affect Miller’s employees?
We envision a smooth transition for Miller’s business, customers and employees. We’ll continue to celebrate their company’s tremendous history and culture, while embracing them as part of the INTREN family. As a larger company, we will also offer Miller employees additional training/development, benefits and opportunities for growth within INTREN.

Will Miller’s CEO and President still be active with INTREN?
Miller CEO Christina Ernst will become the newest member of INTREN’s Board of Directors, bringing the number of female members to five, which is rare in any industry, much less construction. President Andy Carmean will serve as INTREN’s newest Regional Vice President and will continue to oversee the Vincennes and Troy locations. He will be an integral part of INTREN’s Leadership Team.

INTREN Finalizes Transaction to Acquire Miller Construction Company

Unique Woman-Controlled Board Welcomes CEO Christina Ernst

INTREN, one of the nation’s largest certified Women Business Enterprise (WBE) specialty utility contractors, today announced they have closed the transaction to acquire Indiana-based Miller Construction Company, Inc., a third-generation full-service electrical contracting company, which is also a leading WBE.  INTREN’s focus now is a thoughtful integration of both companies.

“An acquisition evokes a myriad of emotions for employees and our focus now is on bringing our teams together in a way that minimizes any concerns,” said INTREN CEO Kelly Tomblin. Miller has an extraordinary team and we want to make sure they continue operations with as little interruption as possible. My intention is to assemble a creative integration team that will uncover and implement the best practices of both companies.” 

Miller Construction’s 175 employees join INTREN’s 1,700-strong team to provide more to complete service offering through a wider geographic reach. Company President Andy Carmean will continue to oversee Miller activities and will join INTREN as Regional Vice President serving the Indianapolis and St. Louis markets.  Christina Ernst, CEO of the Miller Construction Company, will join the woman-controlled INTREN Board of Directors, one of the few in America’s utility contractor space. 

“Today, Miller employees are officially a part of the INTREN family, said Tomblin. However, we will continue to honor the Miller legacy and the three generations that built this extraordinary company. Our companies share similar roots, along with the same culture and values that are centered upon a deep customer focus, an ongoing commitment to safety, and a true caring for our employees and the communities we serve.” 

INTREN Founder and Board Chair Loretta Rosenmayer stressed that INTREN’s acquisition furthers her vision of creating a national full-service company. “Our goal is not only to build the best women-owned business and woman-controlled board, but to be the best overall total-solutions provider for our customers. INTREN’s and Miller’s shared values of stewardship, integrity and customer focus will guide us, and firmly support our belief that companies do well in the marketplace by doing good,” Rosenmayer added. 

This acquisition is in response to requests from our customers and the marketplace. We are expanding our transmission capabilities and expertise, and adding other services such as equipment testing, vegetation management and innovative professional services while maintaining the same safety, quality, and customer focus that INTREN has provided for nearly thirty years. We are now well-positioned to grow further and be even better partners for our customers in the future,” added Tomblin.

“As a family-owned and operated WBE, Miller Construction Company is thrilled to join the INTREN family,” Christina Ernst said. “Not only does INTREN embody the principles and values of Miller Construction Company, but we provide complementary services that will help INTREN achieve continuous growth and become a total utility solutions provider. Together we are well-positioned for industry leadership that will provide creative solutions for our customers.  I look forward to serving on the Board and continuing to help advise the combined companies.”

INTREN’s acquisition of Miller Construction Company shows the industry that diverse companies can combine to create a different and innovative workplace offering.  INTREN’s latest growth to meet the infrastructure needs of the utility marketplace reflects their 30-year trajectory that was bolstered in 2017, when One Equity Partners became a minority investor, providing significant funding for future growth.

Miller Construction Company is a full-service electrical contracting company, providing deep expertise and services throughout the Midwest in overhead transmission and distribution, along with emergency storm restoration services, nationwide. Miller Construction also provides extensive in-house project management and estimating.

The Vincennes, Indiana-based third-generation family business is a certified Women Business Enterprise (WBE) and possesses a long history of exceptional safety, exceeding customers’ needs, and deeply caring for their employees and their communities.

Miller Construction will also provide INTREN with complementary services such as vegetation management and electrical safety testing to bolster INTREN’s customer offerings.

Miller Construction’s headquarters are in Vincennes, Indiana, with a second location in Troy, Illinois. These locations will provide INTREN an extensive service reach throughout Southern Illinois, Southern Indiana, and in the St. Louis markets. INTREN views Miller Construction’s geographic footprint as an asset that will strengthen INTREN’s growth trajectory.

Christina Ernst, Chief Executive Officer
Bill Miller, Chief Operating Officer
Andy Carmean, President

175 employees

• 1920 – Gordon C. Miller worked as a telephone lineman and formed his own company despite the Great Depression
• 1939 – Miller Company founded by incorporating the company with Patrick Size while the economy was recovering with
President Roosevelt’s New Deal
• 1940s – Built over 2,000 miles of communication lines for the U.S. Army Corp of Engineers during WWII. This propelled the
company’s name and ability to bid on large jobs for the State of Indiana
• 1950s – Ran power lines for NASA through Florida swamps to help bring power to Cape Canaveral, which launched
America’s entry into Space
• 2008 - Purchased Electrical Testing Company (ETC) to generate revenue through the testing and sale of rubber products,
such as gloves and sleeves
• 2014 – Miller starts Vegetation Management Right-of-Way Clearing
• 2018 – INTREN acquires Miller Construction Company, based on its industry leadership, continued growth, and its
conscientious, knowledgeable, and loyal workforce
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The INTREN Difference

INTREN is a premier WBE utility specialty contractor with 30 years of experience working with the nation’s largest utility providers, private contractors and developers, municipalities and cooperatives. We specialize in providing turnkey solutions for projects of all sizes, and do so with dedication to completing the job on-time while providing the industry’s most innovative safety standards.


As an innovative leader in the energy industry, our continuous efforts to improve and enhance our safety are the fundamental beliefs and the foundation of INTREN. Safety starts with care… care for our employees, our clients and the communities we work in. These values are what continually drives our employees to "OutPerform. Everyday."


Exceptional quality and dependability are the cornerstones of every INTREN project. Our full-scale employee accountability program and extensive safety and performance protocols help us deliver pristine, quality projects to every client, every time.


"OutPerforming. Everyday" is our specialty. Ongoing employee training, a comprehensive reporting system and hands-on leadership keep our skill set on the leading edge. We are committed to continuous improvement, efficiency and teamwork at every turn.