Integrated Resource Plan

PacifiCorp's 2023 Integrated Resource Plan (IRP) builds upon our progress toward the goals laid out in the 2019 and 2021 IRPs and identifies investments in modernized transmission, renewable energy, storage, demand response and advanced nuclear resources.

The power and promise of a connected West

At PacifiCorp, we share a vision with our customers and communities in which energy from diverse Western resources creates opportunities for them to thrive. This vision has guided our work for years and we've already made substantial progress towards a reliable and resilient energy future.


The IRP is a comprehensive decision support tool and roadmap for meeting the company's objective of providing reliable and least-cost electric service to all of our customers. The plan is developed with considerable public involvement from state utility commission staff, state agencies, customer and industry advocacy groups, project developers, and other stakeholders. 

The key elements of the IRP include: a finding of resource need, focusing on the first 10 years of a 20-year planning period; the preferred portfolio of supply-side and demand-side resources to meet this need; and an action plan that identifies the steps we will take during the next two to four years to implement the plan.

PacifiCorp prepares its integrated resource plan on a biennial schedule, filing its plan with state utility commissions during each odd numbered year. For five of its six state jurisdictions, the company receives a formal notification as to whether the IRP meets the commissions’ IRP standards and guidelines, referred to as IRP acknowledgement. For even-numbered years, the company updates its preferred resource portfolio and action plan by considering the most recent resource cost, load forecast, regulatory, and market information.

The IRP uses system modeling tools as part of its analytical framework to determine the long-run economic and operational performance of alternative resource portfolios. These models simulate the integration of new resource alternatives with our existing assets, thereby informing the selection of a preferred portfolio judged to be the most cost-effective resource mix after considering risk, supply reliability, uncertainty, and government energy resource policies.

For more information, contact or 503-813-5245.

2023 IRP Update

2023 IRP Update (April 1, 2024)

2023 IRP

2023 IRP – Volume I (March 31, 2023)

2023 IRP – Volume II Appendices (March 31, 2023)

2023 IRP – Volume I  – Washington (March 31, 2023)

2023 IRP – Volume II Appendices – Washington (March 31, 2023)

2023 IRP – Volume I Amended Final (May 31, 2023)

2023 IRP – Volume II Appendices Amended Final (May 31, 2023)

2023 IRP – Volume I Amended Final – Washington (May 31, 2023)

2023 IRP – Volume II Appendices Amended Final – Washington (May 31, 2023)

2023 IRP Presentations

IRP Comments – Stakeholder Feedback

IRP Support & Studies

For information on earlier integrated resource plans, please contact or 503-813-5245.