Illinois generates electricity from more kinds of sources than most states: nuclear stations along its rivers, coal and gas plants, wind farms on the central prairie, small hydroelectric dams, and boiler houses inside factories and hospitals. Our directory lists 327 of these sites, and they do not all work the same way. Some are large stations run by national generators. Others are municipal plants, industrial utility buildings, or equipment serving a single campus. This page explains who oversees each type, how the picture changes between Chicago and the rural counties, and how to reach the right office.

Who Regulates Power Plants in Illinois

No single agency runs every plant in the state. Responsibility is split by what a plant does, and knowing the split saves hours of phone calls.

The Illinois Commerce Commission (ICC) regulates investor-owned utilities such as ComEd and Ameren Illinois. It oversees how they deliver power and takes consumer complaints about billing, service quality and disconnection. Since the Electric Service Customer Choice and Rate Relief Law of 1997, households can buy supply from alternative retail suppliers. The local utility still owns the wires and handles outages.

The Illinois Power Agency, created in 2007, plans electricity procurement for utility customers and runs state renewable energy programs. Air pollution follows a separate track. The Illinois Environmental Protection Agency issues air permits to boilers and generating units, and large sources fall under the Clean Air Act Permit Program, the state's version of the federal Title V system. Water discharge permits and coal ash rules run through the same agency, while the Illinois Pollution Control Board adopts the underlying rules.

Nuclear power gets its own layer of oversight. Illinois has more operating reactors than any other state, 11 units at six sites: Braidwood, Byron, Clinton, Dresden, LaSalle and Quad Cities. The U.S. Nuclear Regulatory Commission licenses and inspects them. The Illinois Emergency Management Agency and Office of Homeland Security coordinates offsite emergency planning and radiation monitoring with county emergency managers. Our listing for the Dresden Generating Station at 112 East Washington Street in Morris falls in Grundy County, where nuclear generation in Illinois began at Dresden in 1960.

State policy is also changing the map. The Climate and Equitable Jobs Act of 2021 sets a path toward 100 percent clean energy by 2050 and schedules the retirement or cleanup of fossil-fuel plants over the following decades. Some coal and gas listings may change status, so confirm that a site is operating before you plan a visit, a bid or a complaint.

Metro Chicago, Central Illinois and River Towns Compared

Chicago and the collar counties

Cook County holds 51 listings, and Chicago alone accounts for 20. Many are not utility stations. Chicago West Side Energy Center on West Ogden Avenue sits alongside institutional sites such as Saint Francis Hospital in Evanston, which runs its own mechanical plant. The city's older coal stations, including Fisk and Crawford, closed in 2012, so many of today's urban listings are small generators and campus plants.

Around the city, Will County lists Joliet 29 on Channahon Road. DuPage County has the BP Naperville Campus Power Plant and General Mills West Chicago. Kane County has Rock-Tenn in Aurora, and Lake County has Yeoman Creek in Waukegan. Most of this region buys from ComEd and sits inside the PJM grid. In the metro area you will usually reach a corporate switchboard or a facilities manager, not a neighborhood office.

Central Illinois: Springfield, Decatur, Bloomington and Peoria

Ameren Illinois serves most of the central and southern part of the state, which belongs to the MISO grid. Springfield has nine listings, including one named Factory at 1900 Factory Street. The city also runs its own municipal utility, City Water, Light and Power, which gives residents a local public body to call. In Decatur, Fuyao Glass Illinois Inc. on East Elwin Road shows how a large manufacturer can appear in this category.

McLean County has 11 listings and pairs the Gillum Power Plant near Bloomington with High Trail Wind Farm in Ellsworth. Peoria lists the Ameren Energy Resources Generating Power Plant on South Cilco Lane. Wind projects here usually sit on leased farmland, so there is no public front office. Questions about turbines, noise or road damage often go to the county zoning office or the project's community contact.

River towns and rural Illinois

Along the Illinois and Rock rivers, power and water are closely tied. La Salle County has 13 listings, including Marseilles Lock And Dam Hydro and the City Of Peru Generating Station on Water Street. Lee County has 10, led by the Dixon Hydroelectric Dam on East River Road, and Rock Falls, just across the Rock River, lists Avenue A Generator Sets. Rochelle in Ogle County has the North Ninth Street site, and Rockford's Winnebago Energy Center on Lindenwood Road is one of the few listings with a phone number.

Further west and south the sites get quieter. Tiskilwa in Bureau County lists five sites, including Agriwind on 1200 East Street. Bishop Hill II Wind Farm lies near Cambridge in Henry County. In Clay County, Flora Site A Power Plant sits on Vincennes Avenue. Expect gated property, a small staff and calls answered by an owner's regional office rather than the plant itself.

Reading a Power Plant Listing Before You Call or Visit

A listing points to a place, not always to a public counter. Use the details to decide who to contact, and save yourself a wasted trip.

Addresses in a public directory can be an office, a mailing location or the plant's physical site, so verify with the owner before planning a trip.

Power plant facilities in Illinois include a mix of federal, state, and municipally owned generation assets that contribute to the region's overall electricity supply. Illinois's energy mix and the number of publicly owned facilities reflect the state's natural resources, regulatory environment, and historical development of its utility infrastructure.

Power Plant locations are available in 185 cities across Illinois. They are spread across 68 counties.

Areas with the highest concentration of power plant locations include Chicago, Springfield, Morris, often reflecting proximity to water resources, fuel supply infrastructure, or industrial demand centers.

Residents of Illinois who are customers of a municipal or public power utility can contact their local power authority for billing assistance, energy efficiency programs, and information about planned outages or infrastructure upgrades in their service area.

Power Plant by Counties

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Residents of Illinois who receive electricity service from a publicly owned utility can visit or contact that utility's customer service office to learn about outage reporting, billing options, and energy assistance programs. For information about a specific power generation facility in Illinois, contacting the state's public utility commission is often the best starting point.

Browse Power Plant by county across Illinois to find the nearest location.

Using Power Plant Offices in Illinois: Records, Outages and Local Contacts

Most people who open a power plant listing want one of four things: restored service, answers about a plant near their home, work or a contract, or public records. Each starts with a different office, and the first call often goes to the owner rather than to the plant gate.

For records, the Illinois Freedom of Information Act is the main tool. Public bodies such as municipal utilities, cities and county offices must answer requests, normally within five business days, with a possible extension. Private plants are not covered, but their air and water permits sit in files at the Illinois EPA, which is covered. Put your request in writing and name the facility, the street address and the permit or document you want.

In the Springfield area, Sangamon County is a useful base for state-level questions. Both the Illinois Commerce Commission and the Illinois EPA are headquartered in Springfield, so in-person filings and public meetings are often easier here than anywhere else in the state. The city's own utility, City Water, Light and Power, is a local public body that residents can approach directly.

Up the Rock River, Lee County offers a different picture. The Dixon Hydroelectric Dam on East River Road ties generation to river conditions, so flow, ice and flood season shape what you can see and when. Nearby Rock Falls lists generator sets on Avenue A, and the two towns share a river and a utility landscape.

Rural callers should expect longer waits, since many plants share staff with other sites. Metro callers usually face a switchboard first. In both cases, ask for the plant manager's office or community relations, and write down the name of whoever you reach.

Power Plant Questions Specific to Illinois

Call your utility, not the generating plant. ComEd serves northern Illinois, including Chicago, while Ameren Illinois covers most of the central and southern part of the state. Some towns have a municipal or cooperative provider instead. Check your bill for the outage number, and report downed lines to the utility and to 911 while staying well back from them. Plants generate power but do not control local distribution lines. If a dispute over restoration, billing or disconnection is not settled with the utility, you can file a complaint with the Illinois Commerce Commission, which handles consumer questions for regulated utilities.

Six sites operate in Illinois. Dresden is in Grundy County near Morris, Braidwood is in Will County, LaSalle County Station is in La Salle County, and Byron is in Ogle County. Clinton Power Station is in DeWitt County, and Quad Cities Generating Station sits on the Mississippi River near Cordova in Rock Island County. Together they run 11 reactors, the most of any state. If you live within about ten miles of one, your county emergency management agency and the plant operator send emergency planning information, so contact that agency if you have not received it.

Start with the Illinois Environmental Protection Agency, which issues air permits and keeps compliance files for boilers and generators. Large sources hold Clean Air Act Permit Program permits, and the file usually names the owner, the units and the emission limits. Request records through the agency's Freedom of Information process, and expect an answer within five business days or a notice of extension. For a municipal plant, such as one run by a city utility, you can also ask the city directly. Have the facility name, street address and county ready, because several listings share similar names.

Usually not without arrangement. Generating stations, especially nuclear sites, restrict access for security reasons. Wind farms such as High Trail in McLean County or Bishop Hill II in Henry County stand on private farmland with no public office. Contact the operator's community relations or corporate office and ask whether group tours, school visits or public meetings are offered. Dams and hydro sites like the Dixon Hydroelectric Dam may have riverside viewing areas outside fenced zones, though conditions change with river levels. Never enter fenced property or climb on equipment. A listing shows a location, not an open door.

Many facilities run their own boilers, generators or combined heat and power systems to serve one site. Fuyao Glass Illinois in Decatur, Bunge Oil in Bradley, General Mills in West Chicago, the BP Naperville campus and Saint Francis Hospital in Evanston are examples of owners that typically operate energy equipment on site. These are not utilities, they are not open to the public, and they rarely sell power to the grid. Air permits can still apply, and the owner's facilities or environmental manager is the right contact. For jobs or equipment bids, start with the company's main office rather than the street address.

Call 811 to reach JULIE, the Illinois one-call system, at least two working days before you dig. Member utilities then mark their buried lines at no charge, including electric and gas. Marks cover utility lines only, so a plant's private underground piping or cables may not be marked. Ask the property owner for those drawings. Overhead lines are your responsibility to avoid. Federal safety rules call for keeping ladders, equipment and tools at least ten feet from lines carrying up to 50 kV, and more for higher voltages. If equipment touches a line, stay put and call 911.