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Type Subsidiary
Industry Electricity
Founded 1910 (1910)[1]
Headquarters Lloyd Center Tower
825 N.E. Multnomah Street, Portland, Oregon
Area served

136,000 square miles
Utah 42%
Oregon 24%
Wyoming 18%
Washington 8%
Idaho 6%

California 2%
Key people Gregory E. Abel, Chairman and CEO, PacifiCorp
Micheal Dunn, President and CEO, PacifiCorp Energy
R. Patrick Reiten, President and CEO, Pacific Power
A. Richard Walje, President and CEO, Rocky Mountain Power
Owner(s) Berkshire Hathaway
Employees 6,333[2]
Parent MidAmerican Energy Holdings Company
Subsidiaries Pacific Power
Rocky Mountain Power
PacifiCorp Energy
References: Area Served[3]

PacifiCorp is an electric power company in the northwestern United States.

PacifiCorp has three primary subsidiaries:

  1. Pacific Power is a regulated electric utility with service territory throughout Oregon, northern California, and southeastern Washington.
  2. Rocky Mountain Power is a regulated electric utility with service territory throughout Utah, Wyoming, and southeastern Idaho.
  3. PacifiCorp Energy operates 69 generation facilities in the six states that Pacific Power and Rocky Mountain Power operate in, plus two facilities in Montana, three in Colorado, and one in Arizona.

Since 2006, PacifiCorp has been a wholly owned subsidiary of MidAmerican Energy Holdings Company, itself an affiliate of Berkshire Hathaway. In 2001, PacifiCorp was purchased by Scottish Power, but later sold to MidAmerican.

PacifiCorp is currently headquartered in the Lloyd Center Tower[4] at 825 N.E. Multnomah Street, Portland, Oregon, in the Lloyd District. Pacific Power is also headquartered in the same building. Rocky Mountain Power and PacifiCorp Energy are headquartered in Salt Lake City, Utah.

Pacific Power and Rocky Mountain Power combined serve over 1.4 million residential customers, 202,000 commercial customers, and 34,000 industrial and irrigation customers - for a total of approximately 1,668,000 customers. The service area is 136,000 square miles (350,000 km2). Pacific Power and Rocky Mountain Power own and maintain 15,622 miles (25,141 km) of long distance transmission lines, 43,850 miles (70,570 km) of overhead distribution lines, 14,510 miles (23,350 km) of underground distribution lines, and 900 substations.

In 1977, PacifiCorp spun off its coal mining interests into a mining company known as NERCO, which was eventually listed on the New York Stock Exchange and ranked as high as 353 on the Fortune 500 list of the largest American companies. Through its majority interest in NERCO, PacifiCorp was involved in the mining of coal, oil, natural gas, gold, silver, and uranium. PacifiCorp still owned 82% of NERCO in 1993, when it was acquired by the mining giant, the Rio Tinto Group.[5]


PacifiCorp was formed in 1910 from the merger of several small electric companies in eastern Oregon and Washington to form the Pacific Power & Light Company. It gradually expanded its reach to include most of Oregon, as well as portions of California, Washington and Wyoming. In 1984, it reorganized itself as a holding company, PacifiCorp, headquartered in Portland with Pacific Power as its main subsidiary.

In 1987, PacifiCorp acquired Utah Power & Light. Headquartered in Salt Lake City, Utah Power had been formed in 1912 from the merger of four electric companies in Utah, Idaho and Wyoming. In 1881, one of those companies made Salt Lake City the fifth city in the world with central station electricity.

After the merger both Utah Power & Light and Pacific Power & Light operated as divisions of PacifiCorp. In a July 2006 reorganization, Pacific Power's territory in central and eastern Wyoming was merged with the Utah Power territory to form Rocky Mountain Power.[6]

Pacific Power[edit]

Pacific Power serves customers in Washington, Oregon and California. Major cities served include:

As of December 31, 2009, Pacific Power serves 555,070 customers in Oregon, 126,665 customers in Washington, and 45,148 customers in California.[7]

Rocky Mountain Power[edit]

Rocky Mountain Power serves customers in Idaho, Utah, and Wyoming.

Major cities served include:


Ammon, Lava Hot Springs, Malad City, Montpelier, Preston, Rigby, Saint Anthony, Shelley


Rocky Mountain Power serves most major cities in Utah, with the following exceptions:

Bountiful, Eagle Mountain, Kaysville, Lehi, Provo, Murray, Logan


Buffalo, Casper, Cody, Douglas, Evanston, Green River, Kemmerer, Lander, Laramie, Rawlins, Riverton, Rock Springs, Thermopolis

As of May 1, 2007, Rocky Mountain Power serves approximately 758,000 customers in Utah, 129,000 customers in Idaho, and 67,000 customers in Wyoming.


Utah Power and Light (UP&L) was organized on 6 September 1912 as a subsidiary of a large holding company, Electric Bond and Share Company (EBASCO) of New York. Within four years of its organization, UP&L had purchased twenty-seven other electric companies in the general Utah area, and eventually absorbed more than one hundred thirty.

Pacific Power & Light was formed in 1910 from the merger of several financially troubled utilities in Oregon and Washington. In 1954, Pacific Power & Light merged with the Mountain States Power Company, essentially doubling the company's service area. In 1961, the company purchased the California Oregon Power Company, extending its service into southern Oregon and northern California [8]

PacifiCorp Energy[edit]

PacifiCorp Energy was created after the purchase of PacifiCorp by MidAmerican Energy Holdings. PacifiCorp Energy owns, maintains and operates the PacifiCorp generation assets and manages the commercial and trading operations of the company. PacifiCorp Energy owns 68 generating plants with a capacity of 9,140 megawatts. 70.6% of the generation is from thermal sources (i.e. coal or natural gas), 6.7% from hydroelectric sources, and 0.2% from wind sources. 22.5% of PacifiCorp Energy's generation is purchased from other suppliers or under contracts.

Generation resources[edit]

Major generation facilities include:

Thermal generation[edit]

Plant Name Location Fuel Net Capacity (MW) Online Date
Jim Bridger (Two-thirds owner) Point of Rocks, WY Coal 1,413.4
Hunter Castle Dale, Utah Coal 1,112.4 1977
Huntington Huntington, Utah Coal 895.0 1973
Dave Johnston Wyoming Coal 762.0
Naughton Kemmerer, Wyoming Coal 700.0
Lake Side Lindon, Utah Natural Gas 545.0
Currant Creek Mona, Utah Natural Gas 540.0
Hermiston Hermiston, Oregon Natural Gas 540.0
Chehalis Chehalis, Washington Natural Gas 540.0
Cholla Joseph, Arizona Coal 380.0
Gadsby Salt Lake City, Utah Natural Gas 355.0
Wyodak Wyoming Coal 268.0
Carbon Helper, Utah Coal 172.0
Craig (partial owner) Craig, Colorado Coal 165.0
Colstrip (partial owner) Colstrip, Montana Coal 148.0
Hayden (partial owner) Colorado Coal 78.1
Little Mountain Great Salt Lake, Utah Natural Gas 14.0

Hydroelectric Generation[edit]

Name Net Capacity (MW)
Lewis River 578.2
North Umpqua River 199.9
Klamath River 163.8
Bear River 103.9
Prospect (Rogue River) 36.0
(30 minor projects) 78.3

Renewable generation[edit]

Name Type Net Capacity (MW)
Leaning Juniper I Wind 100.5
Wolverine Creek Wind 64.5
Rock River I Wind 50.0
Combine Hills Wind 41.0
Foote Creek Wind 32.6
Blundell Geothermal 23.0
Goodnoe Hills Wind 94
Marengo I Wind 140.4
Marengo II Wind 70.2
Glenrock Wind 99
Seven Mile Hill Wind 99
Seven Mile Hill II Wind 19.5
Rolling Hills Wind 99
Glenrock III Wind 39

Coal mining[edit]

PacifiCorp Energy also owns and operates several captive coal mines located at or very near some of its generation plants. In Wyoming, PacifiCorp operates and has partial interest in Jim Bridger Mine and owns the Dave Johnston Mine, which is in final reclamation. The company also owns and operates the Deer Creek Mine in Utah, near the Huntington Plant and has a partial interest in the Trapper Mine in Colorado.

References and sources[edit]

External links[edit]