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.

Transmission Services

PacifiCorp’s transmission business, based in Portland, operates independently 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 Transmission 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 »

Energy Imbalance Market

PacifiCorp Transmission operates its grid within the new 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 initial six-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.

NV Energy plans to join the EIM in 2015 and Puget Sound Energy announced in March 2015 that it will join in 2016. In the first two months of operation, the California ISO estimated that the new system saved customers $6 million, with $4.7 million attributed to PacifiCorp customers. 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 EIM »

 

Transmission Facts

transmission lines

High-voltage transmission lines carry electricity from a generation source to the local distribution system to meet consumer needs.

  • Area served: 750 communities in six Western states from Portland, Ore. and Salt Lake City, Utah to Alturas, Calif. and Buffalo, Wyo.
  • System: Interconnected with more than 80 generating plants & 15 adjacent control areas at 124 interconnection points
  • Area covered: Extends more than 16,300 pole miles across 10 states

PacifiCorp is committed to providing non-discriminatory, open-access transmission service. Review standards of conduct