Leading Efforts to Power the Future
PacifiCorp owns and operates one of the largest privately held transmission systems in the U.S. Our goal is to provide efficient, low cost and reliable transmission services to all users of the system.
The company assures reliability by maintaining strong operational, maintenance, and compliance programs including operating redundant control centers in Portland and Salt Lake City.
PacifiCorp’s transmission system is managed by Pacific Power and markets transmission services using an Open Access Same-Time Information System (OASIS). PacifiCorp provides potential customers information about obtaining generation interconnection services and/or transmission services under its Open Access Transmission Tariff. More information on transmission services »
Transmission Projects & Energy Gateway
PacifiCorp is leading an ambitious, $6 billion-plus investment plan to expand the transmission system in the West. PacifiCorp continues to permit and construct needed transmission additions, including the Energy Gateway projects that are slated to add 2,000 miles of transmission lines across the West. View current projects »
Western Grid Coordination
PacifiCorp operates its grid within the Energy Imbalance Market that went live in November 2014. The EIM was created by PacifiCorp and the California ISO, the two largest transmission providers in the Western U.S. The EIM uses a sophisticated system to automatically balance demand every five minutes with the lowest cost energy available across the eight-state combined grid.
The EIM leverages the growing diversity of renewable resources, flexible backup resources and demand using advanced technology to keep energy supply affordable and reliable. The new market is attracting additional participants and has the benefit of increasing benefits for all customers as diversity increases.
Since the EIM launch in November 2014, the California ISO estimated that the new system saved customers a total of $140 million. Without an EIM, utilities have to meet demand with resources in their own service areas which often means using higher priced generation, more expensive energy reserves, and manual dispatches that are less responsive to continuously changing conditions.
Regional coordination captures latent value without the need for significant new infrastructure and provides the foundation necessary for the grid to accommodate large volumes of renewable generation while maintaining a low cost, reliable supply of electricity. Learn more about regional coordination »