Transmission
Connecting communities across the West
PacifiCorp owns and operates one of the largest privately held transmission systems in the nation.
With 17,100 line miles of high-voltage transmission spanning 10 states and a range of climate zones, we’re uniquely able to serve our customers with the diverse and abundant natural resources the West can offer.
Advancing grid reliability and resilience
Transmission expansion
PacifiCorp is leading an ambitious, $11 billion investment plan to expand the transmission system in the West.
Transmission services
PacifiCorp’s transmission system is managed by Pacific Power and markets transmission services using an Open Access Same-Time Information System (OASIS).
Western grid coordination
PacifiCorp operates its grid within the Energy Imbalance Market. To further benefit customers, the company will join the Extended Day-Ahead Market planned for 2026.
PacifiCorp is committed to providing non-discriminatory, open-access transmission service. Review standards of conduct »
Transmission system details
Transmission construction projects
Western energy market
