Power Plant Offices in Idaho: What the Listings Cover

Idaho makes electricity in more ways than most people expect. The Snake River turns turbines at dams from Hells Canyon to Idaho Falls. Wind parks stand on the lava plains of the Magic Valley. Dairies in the south capture biogas and burn it for power. This page lists power plant sites across Idaho and explains who actually runs them, so you can reach the right office the first time.

Treat each listing as a starting point rather than a front door. Most generating stations are working industrial sites with fenced access. Some addresses are only a plant road or a mailing box. Cabinet Gorge, for example, is listed under a post office box in Clark Fork. Before you drive out, find out who owns the plant and which office handles your question.

Who Regulates Power Plants and Electric Service in Idaho

No single state agency oversees every plant. Responsibility is split among several bodies, and the split decides where your question should go.

Idaho has no statewide siting board for most generating plants. Under the Local Land Use Planning Act, counties decide where a wind farm or digester can be built, which is why county hearings matter so much to neighbors.

Municipal utilities and electric cooperatives work differently. City councils and member-elected boards set their rates, so the Public Utilities Commission does not hear most complaints about them. Idaho Falls, which operates its own city electric system, is the clearest example in our listings.

Hydropower on the Snake River and Idaho's Smaller Rivers

Hydropower is the backbone of Idaho generation, and the Snake River carries most of it. Idaho Power runs a chain of dams across southern Idaho, including the Hells Canyon Complex, Swan Falls, Bliss and the Salmon Falls plants near Hagerman. The Bliss Power Plant listing sits on Power Plant Road in Bliss, in Gooding County, which also holds the Blind Canyon Hydro listing near Wendell.

Eastern Idaho has a different structure. The Lower No 1 Power Plant sits on West Sunnyside Road in Idaho Falls, in Bonneville County, where the Snake River drops through the middle of the city. Idaho Falls Power, the city's electric utility, operates plants along that stretch, so customers deal with city hall rather than a state-regulated company.

Federal and independent projects fill out the map. Anderson Ranch Power Plant, listed under Mountain Home in Elmore County, is part of the Bureau of Reclamation's Boise Project on the South Fork Boise River. Barber Dam lies on the Boise River in Ada County, and the Magic Dam Hydroelectric Project sits near Shoshone in Lincoln County.

Smaller projects, such as Low Line Rapids near Kimberly, show that hydro in Idaho is not only about big dams.

Flows below any dam can change quickly. Stay clear of tailraces, obey posted warnings and keep children and pets back from the water's edge near powerhouses.

Wind Parks, Geothermal Heat and Dairy Digesters in South-Central Idaho

The Magic Valley is where much of Idaho's newer generation clusters. Thousand Springs Wind Park in Hagerman, Oregon Trail Wind Park in Twin Falls, Cassia Gulch Wind Park near Buhl, Burley Butte Windpark in Burley and Bennett Creek Windfarm near Glenns Ferry all use steady wind over open rangeland and farmland. Twin Falls County has the largest county total in our database, so its page is the best place to compare nearby sites.

Many of these projects are small independent producers. They sell power to a utility under contracts shaped by the federal PURPA law, and the Idaho Public Utilities Commission reviews those agreements for Idaho Power. A landowner approached about a wind lease should also ask the county planning office what approvals the project needs.

Dairy biogas is a distinctly Idaho story. Big Sky Dairy Digester in Gooding, the Bettencourt B-6 dairy plant in Jerome, Rock Creek Dairy in Filer and Cargill Dry Creek Biofactory near Hansen turn manure into fuel for engines. Raft River Geothermal Power Plant near Malta draws on underground heat in the Raft River valley.

Hagerman, tied with Idaho Falls at the top of the city list, shows how varied a single town can be. Springs from the Snake River Plain aquifer emerge in the canyon, the river drops past the Salmon Falls dams, and wind turbines stand on the plateau above.

How Metro, Mill-Town and Rural Idaho Differ

Around Boise, Ada County hosts Barber Dam and the Id Solar listing in Kuna, and Boise is home to Idaho Power's headquarters. Offices here are close together and easy to reach by paved road.

In the north, Avista serves much of the Panhandle, and Cabinet Gorge on the Clark Fork River is its best-known plant in our listings. The Clearwater Paper listing in Lewiston is an industrial generator tied to a pulp and paper mill, so questions go to the mill, not a utility. Cascade Power Plant at Lake Way sits in Valley County's mountain country.

In the east, the Ashton listing in Fremont County and the Cove plant near Grace in Caribou County lie in the upper Snake and Bear River country, where winter weather affects road access and timing.

Rural addresses across southern Idaho often follow a numbered grid, such as South 2400 East near Jerome or 2100 East in Malta. Use a county map or coordinates, because phone navigation can misplace these roads.

Practical Steps Before You Call or Visit an Idaho Power Plant

A few habits save wasted trips and unanswered calls:

Plant ownership changes over time, and some listings may describe sites that are idle, sold or renamed. When a phone call or visit does not match the listing, confirm the current operator through the county assessor or the utility before you rely on the address.

If you are comparing sites, begin with the county pages and then narrow to the city.

Power plant facilities in Idaho include a mix of federal, state, and municipally owned generation assets that contribute to the region's overall electricity supply. Idaho'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 65 cities across Idaho. They are spread across 34 counties.

Areas with the highest concentration of power plant locations include Idaho Falls, Hagerman, Twin Falls, often reflecting proximity to water resources, fuel supply infrastructure, or industrial demand centers.

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

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

Reading the Idaho Listings by County

County totals show where generation is concentrated. Twin Falls County and Gooding County lead because wind parks, small hydro and dairy digesters cluster along the Snake River canyon and the farmland around it. Jerome County adds dairy biogas, including the Bettencourt B-6 listing, plus the S E Hazelton A listing near Hazelton.

Cassia County brings Burley Butte Windpark and the Raft River Geothermal Power Plant, so one county covers wind and underground heat. Power County and Bannock County have four listings each and Kootenai County has six, which makes those pages quick to scan.

Counties are also where land-use files live. If a plant was built, expanded or contested, the planning department usually holds the hearing record. Idaho's public records law lets you request those files, and the clerk can tell you how older material is stored.

Check any listing against the owner's current information before you travel. A plant may have changed hands, been renamed or stopped running since the record was created.

Most people come to these pages for one of four reasons: finding the owner of a nearby plant, comparing sites before a land lease, looking for jobs, or tracking down a records office. Each leads to a different agency, so decide your goal first.

Power Plant Questions Idaho Residents Ask

The Idaho Public Utilities Commission regulates investor-owned electric, natural gas and water utilities in the state, including Idaho Power, Avista and Rocky Mountain Power. Three commissioners, appointed by the governor, review rate cases, hold public hearings and accept consumer complaints. The commission does not regulate municipal systems such as Idaho Falls Power, and it generally does not oversee electric cooperatives, which answer to their member boards. It also has no authority over federal dams run by the Bureau of Reclamation. Start with your utility's customer service line, and if the issue stays unresolved, contact the commission's consumer assistance staff.

Usually not without an appointment. Powerhouses and switchyards are secure industrial sites, and unannounced visitors are turned away for safety reasons. Many dams on the Snake River do have public parks, boat ramps or fishing access nearby, so you can often see the structure from outside the fence. If you want a tour, call the owner's customer service or community relations line and ask whether groups are accepted. Expect to give notice, bring photo identification and follow posted rules. Also remember that river flows below dams can rise without warning, so keep back from tailraces.

Call the utility that serves your address, not the plant. Idaho Power serves most of southern Idaho, Avista serves much of the north, Rocky Mountain Power serves parts of eastern Idaho, and several cooperatives and city systems cover the rest. Your bill lists the correct outage number. Report downed lines, but never touch them or approach them, and call 911 if a line is sparking or lying across a road. In rural Magic Valley areas, crews may need extra time to reach long gravel roads, so report the outage even if a neighbor already did.

Many do, but terms vary. Small wind parks and biogas plants in south-central Idaho commonly sell output to a utility under a power purchase agreement, often arranged under the federal PURPA law. For Idaho Power, the Idaho Public Utilities Commission reviews those agreements and posts case files online. Some dairy digesters use part of their gas or electricity on the farm, so grid sales may be only a portion of output. If you want specifics about a named listing such as Big Sky Dairy Digester or Thousand Springs Wind Park, ask the owner or search the commission's case records for the project name.

Work from the parcel outward. The county assessor's office can tell you who owns the land, and the Idaho Secretary of State's business search shows registered companies and their listed agents. For hydropower, the Federal Energy Regulatory Commission's online library holds license documents for many projects. Utility contracts often appear in Public Utilities Commission case files, and the county planning department keeps permit records. A name on a listing may be the project company rather than the parent company, so cross-check at least two sources before you contact anyone.

Idaho has no commercial nuclear power plant. The Idaho National Laboratory, a U.S. Department of Energy research site in the desert west of Idaho Falls, tests reactor technology but is not a commercial power producer. Nearby, the retired Experimental Breeder Reactor-I near Arco produced usable electricity from nuclear fission in 1951 and is now a museum that opens seasonally, so confirm dates before you go. Public information about the laboratory runs through its offices in Idaho Falls, not through the hydro, wind, geothermal and biogas listings on this page.

Start at the county planning and zoning office. Ask which conditional use permits the neighboring project holds, what setbacks and conditions the county attached, and whether expansion is pending. Then review the title for easements, since transmission lines and access roads often cross private parcels. Ask the serving utility where lines run or are planned. Odor and traffic from a digester, and noise or shadow from turbines, vary by site, so visit at different times of day. Written answers from the county are more reliable than verbal ones.