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Company Information


After a century of service, every day we still ask the question, "How can we better serve our customers?"

What is today ComEd began as the Western Edison Light Company, one of several companies owned by inventor and researcher Thomas Edison. As you may know, Edison experimented with electric currents and created an early light bulb that wasn't ready for mass use. It didn't last long enough. One of Edison's employees, African-American draftsman and engineer Lewis Latimer, perfected the longer-lasting carbon filament, which would revolutionize the world.

In July 1892, another Edison employee moved to Chicago to run Edison's local company, Chicago Edison. Sam Insull had a sharp business mind and eagerly increased his knowledge of electricity. Through improved marketing and increased demand for electric lighting, Commonwealth Edison was born in September 1907.

We Are the Largest Electric Utility in Illinois

ComEd is a unit of Chicago-based Exelon Corporation (NASDAQ: EXC), a Fortune 100 energy company with approximately 10 million electricity and natural gas customers. ComEd powers the lives of more than 4 million customers across northern Illinois, or 70 percent of the state’s population.

ComEd's service territory borders Iroquois County to the south (roughly Interstate 80), the Wisconsin border to the north, the Iowa border to the west and the Indiana border to the east.


Our Investments

ComEd is an energy delivery company. We do not own power plants and we do not make electricity. We deliver electricity to your home or business. To do this, we manage more than 90,000 miles of power lines in an 11,400-square-mile territory. Since 2001, we have invested more than $5 billion in our electrical transmission and distributions system to continue to provide customers like you with the quality service you expect and deserve.

Providing safe, reliable electric service to our 4​ million customers is just part of what we do. We also help you discover new ways to save money on your electric bill, and show you how you can help the environment by decreasing your carbon footprint. We're doing our part for the environment as well.

Another ongoing priority at ComEd is finding new ways to improve our service to our customers. We pursue this goal through a variety of efforts that include:

  • Programs to help you better manage your electric bills
  • Championing investments in technology that can lead to shorter, fewer outages and better information that can empower you to make smart choices about your energy usage
  • Demonstrating a spirit of community service
  • Generous corporate giving

At ComEd, we understand how important safe, reliable power is to customers like you. As a major Illinois corporation, we also recognize our responsibility to be a good community partner, which is why we support a range of initiatives making a difference in peoples' lives. Our commitment focuses on education, environment, arts and culture, and community development programming. In recent years, ComEd employees volunteered more than 7,000 hours annually at local non-profit organizations.

Strengthening Communities

ComEd is taking steps to ensure communities across northern Illinois are ready for tomorrow’s technology today. From an advanced microgrid to electric vehicles, from connected kiosks to creating well-lit pathways for students using sustainable technology, we’re already putting the next generation of clean, resilient energy to work.

We also help students and adults gain the skills they need to join the workforce of the future. Whether it’s pushing for more diversity in the trades or encouraging girls in the ComEd Icebox Derby to become scientists and engineers, our goals are the same: Connecting people, forging a brighter future and strengthening communities for our customers.

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The statements and claims contained in this Progress Report are based on the best-available information as of March 30, 2015 and are subject to revision or change.

2019 Diversity and Inclusion Report

2019 Diversity Report Cover
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