PacifiCorp is an electric power company based in the Lloyd Center Tower in Portland, Oregon with operations in the western United States.

[3] PacifiCorp has two business units: Pacific Power, a regulated electric utility with service territory throughout Oregon, northern California, and southeastern Washington headquartered in Portland, Oregon; and Rocky Mountain Power, a regulated electric utility with service territory throughout Utah, Wyoming, and southeastern Idaho, headquartered in Salt Lake City, Utah.

PacifiCorp operates one of the largest privately held transmission systems in the U.S. within the western Energy Imbalance Market.

In 1984, it reorganized itself as a holding company, PacifiCorp, headquartered in Portland with Pacific Power as its main subsidiary.

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.

Through its majority interest in NERCO, PacifiCorp was involved in the mining of coal, oil, natural gas, gold, silver, and uranium.

In November 2017, Rocky Mountain Power made a deal with Utah's utility authorities to phase out net metering.

Major cities served include: Ammon, Lava Hot Springs, Malad City, Montpelier, Preston, Rigby, Rexburg, Saint Anthony, Shelley Rocky Mountain Power serves most major cities in Utah, with the following exceptions: Bountiful, Kaysville, Lehi, Logan, Provo, Murray, Monroe, Monticello, Springville, St. George Buffalo, Casper, Cody, Douglas, Evanston, Green River, Kemmerer, Lander, Laramie, Rawlins, Riverton, Rock Springs, Thermopolis In 2023, a jury ordered PacifiCorp to pay $70 million in punitive damages to 17 homeowners negatively impacted by the 2020 Oregon wildfires.

[17] In August 2024, PacifiCorp revealed that it faced at least $46 billion in claims resulting from four separate class action complaints related to the wildfires.