How Power Plant Services Are Organised Across Iowa

Iowa gets its electricity from a patchwork of operators: investor-owned utilities, city-owned systems, rural electric cooperatives, and independent wind and solar developers. That patchwork explains why 337 Iowa sites share one directory heading, from a small municipal light plant to a wind project spread across farm fields. Before you call or drive anywhere, work out which kind of operator runs the site. It decides who answers the phone and which rules apply.

The key state body is the Iowa Utilities Commission, part of the Iowa Department of Commerce. It carried the name Iowa Utilities Board until 2023. The commission regulates rates and service quality for the investor-owned utilities, mainly MidAmerican Energy and Alliant Energy's Interstate Power and Light. It applies Iowa Code chapter 476, and chapter 476A requires a generating certificate for larger electric plants, generally those of 25 megawatts or more.

City-owned and cooperative utilities work differently. A municipal plant answers to its city council or a utility board. A cooperative answers to its member-owners. The commission generally does not set their rates, although state safety rules still apply to them. Under Iowa Code 476.25, each electric utility holds an assigned service territory, so you cannot simply switch to another supplier at your address.

Other agencies appear at the edges. The Iowa Department of Natural Resources issues air quality and water permits for plants. The Office of Consumer Advocate, part of the Attorney General's office, represents customers in utility cases. Federal bodies such as the Federal Energy Regulatory Commission and the Nuclear Regulatory Commission cover wholesale power markets and nuclear safety.

Metro Corridors and Small-Town Light Plants: Regional Differences in Iowa

Cedar Rapids leads the state with 18 city listings, and Linn County holds 25 overall. Entries such as Alliant Sbd 9203 Profol, at 4333 C Street Southwest, point to the industrial side of the city's power picture. Linn County is also home to the Duane Arnold Energy Center near Palo, Iowa's only commercial nuclear plant, which stopped producing power after the August 2020 derecho damaged its cooling towers.

Story County comes next with 21 listings. In Ames, the Dayton Avenue Substation sits at 2300 Pullman Street, and the city runs its own municipal electric utility. Nearby Nevada has six listings, including Alliant Sbd 8603 Donnelley at 1235 N Avenue.

Des Moines anchors Polk County with eight city listings. One of them, Anderson Erickson at 2420 East University Avenue, appears under the dairy's business name rather than a utility's. MidAmerican Energy, which is based in Des Moines, is the main investor-owned utility in the capital area.

Outside the big metros, large plants still exist. In Marshall County, the Marshalltown Power Plant at 3000 East Main Street is a large natural gas station. In Black Hawk County, Electrifarm at 3051 West Shaulis Road in Waterloo and the University of Northern Iowa listing at 1227 West 27th Street in Cedar Falls show two very different kinds of site in one county.

Small towns tell another story. Greenfield has six listings, led by Greenfield Municipal Utilities Power Plant at 608 Southwest 2nd Street in Adair County. Sibley No Two Power Plant at 1108 3rd Avenue sits in Osceola County. Brooklyn, Grand Junction, Waverly and Forest City also appear with municipal light or power plant names.

The metro and rural split shows up in how you reach people. In Cedar Rapids or Des Moines, expect a corporate customer line and a plant behind a secured gate. In a town like Greenfield, the plant, the utility office and city hall are often a few blocks apart. One call there usually reaches someone who knows the equipment. Staffing hours differ too, so a small-town office may close earlier than a metro call center.

Wind, Solar and Industrial Sites in Iowa's Countryside

Wind is Iowa's signature resource, supplying more than half of the state's electricity in recent years. Our listings reflect that. Lost Lakes Wind Farm near Lake Park in Dickinson County lists 712-832-3143. Fpl Energy Crystal Lake Wind near Britt and the Hancock County Wind Energy Center near Garner sit in Hancock County. Others include the Traer Wind Project in Tama County, the Highland Wind Project near Primghar in O'Brien County, and the Iowa Distributed Wind Generation Project near Algona in Kossuth County. West Dubuque Solar on Humke Road shows solar growing in the east.

The policy roots go back to 1983. Iowa's Alternate Energy Law, among the first of its kind in the country, required the state's two investor-owned utilities to buy 105 megawatts of renewable power. Wind developers have built on that early start ever since.

Siting rules matter if a project is near your land. Plants of 25 megawatts or more go to the state for a generating certificate. Smaller wind and solar projects are often handled through county zoning. The county board of supervisors or zoning office is where you ask about setbacks, hearings and decommissioning plans.

Rural electric cooperatives deliver power to many farms and small towns outside the city systems. Many buy wholesale power rather than owning large plants, so a co-op office may be where you pay a bill but not where electricity is made. Statewide groups such as the Iowa Association of Municipal Utilities and the Iowa Association of Electric Cooperatives can point you to the right member utility.

Some listings are tied to industry rather than public utilities. ADM Bioprocessing - Clinton Power Plant at 1251 Beaver Channel Parkway in Clinton is one example. Private industrial sites rarely have a public counter, so contact the company's main office instead of the gate.

Finding and Visiting a Power Plant Office in Iowa

Start with the county page for the area you care about, then narrow to the city. Match each listing to its operator using the utility name on your bill. A plant address is often a generating site or gate, not a customer service counter. For payments, new service or billing disputes, use the utility's business office.

If a utility does not resolve a problem, file a complaint with the Iowa Utilities Commission after giving the company a chance to respond. Customers of a city utility can also bring concerns to the city council or utility board, which sets local rates and policies in open meetings.

Power plant facilities in Iowa include a mix of federal, state, and municipally owned generation assets that contribute to the region's overall electricity supply. Iowa'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 171 cities across Iowa. They are spread across 76 counties.

Areas with the highest concentration of power plant locations include Cedar Rapids, Des Moines, Ames, often reflecting proximity to water resources, fuel supply infrastructure, or industrial demand centers.

Residents of Iowa 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 Iowa 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 Iowa, contacting the state's public utility commission is often the best starting point.

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

Reading Iowa Power Plant Listings by County

Iowa has 99 counties, and the 76 counties in our listings cover most of the state. The county page is the fastest way to narrow a search, because zoning, emergency management and property records are all handled at the county level. Linn, Story and Polk Counties lead because they hold the largest cities. Smaller counties such as Adair, Osceola and Muscatine rank high for a different reason: municipal plants and generating sites spread across a thin population.

Listings come from public records, so names can look odd. Entries like Fpl Energy Crystal Lake Wind or Alliant Sbd 9203 Profol may follow the naming used in those records rather than the way a utility describes itself. Treat the address as the facility location, and confirm hours and contacts with the operator. Only Lost Lakes Wind Farm carries a phone number in our data, 712-832-3143. For the rest, check the utility's website or your latest bill.

Seasons matter here. Iowa winters and summer thunderstorms test the grid, and the 2020 derecho showed how fast one storm can cut service across several counties. If you rely on powered medical equipment, tell your utility before bad weather arrives.

Iowa Power Plant FAQs

The Iowa Utilities Commission, part of the Iowa Department of Commerce, regulates investor-owned electric utilities. It also issues generating certificates under Iowa Code chapter 476A for larger plants, generally those of 25 megawatts or more. The Iowa Department of Natural Resources handles air and water permits. Municipal utilities answer to city councils or boards, and cooperatives answer to their members. Federal agencies add another layer, including FERC for wholesale power and the Nuclear Regulatory Commission for nuclear plants. Which agency matters to you depends on whether you have a billing problem, a siting concern or an environmental question.

Generally no. Municipal utilities in Iowa set their own rates through the city council or a utility board, so towns like Greenfield, Waverly and Brooklyn handle rate questions locally. Start with the utility office, then attend a council or board meeting, which is open to the public. If MidAmerican Energy or Interstate Power and Light serves you, the Iowa Utilities Commission handles complaints once you have contacted the company first. Commission staff can review the dispute and explain your options. Keep copies of bills, dates and the names of people you spoke with.

Sometimes, but not as a walk-in. Plants are secured infrastructure, so tours are arranged ahead of time through the operator's community relations or public contact. Small municipal utilities may be more flexible with school groups and civic clubs than large generating stations. Expect to show photo ID and follow the safety rules and protective gear requirements inside. Wind farms such as Lost Lakes in Dickinson County or the Traer Wind Project in Tama County are easiest to see from public roads. Stay out of fields and private access roads unless the landowner or operator has invited you.

Local siting questions usually start with the county. Iowa counties use zoning to set rules for many wind and solar projects, so call the county zoning office or board of supervisors about setbacks, public hearings and decommissioning plans. Plants of 25 megawatts or more also need a generating certificate from the Iowa Utilities Commission, and that process includes public notice. For noise or shadow flicker after construction, contact the operator first, then the county. Keep a simple log with dates, times and photos so your complaint is easy to act on.

Linn County leads with 25 listings, followed by Story County with 21 and Polk County with 14. A high count does not equal high capacity. One large natural gas station, such as the Marshalltown Power Plant in Marshall County, can out-produce many small municipal units combined. Hancock County, with eight listings, shows how wind projects near Britt and Garner add entries without adding people. Use the counts to see where you will find the most offices, and ask the operator for output figures.

Duane Arnold, near Palo in Linn County, is Iowa's only commercial nuclear plant. It stopped generating after the August 2020 derecho damaged its cooling towers. In 2025 its owner, NextEra Energy, announced plans with Google to pursue a restart. Any return to service needs approval from the Nuclear Regulatory Commission, so timelines can shift. For current status, check NRC announcements and the owner's updates rather than older news stories. The site is a secured facility and is not open to casual visitors.