Integrated Resource Plan
Learn more about Tacoma’s power supply and how we are planning to meet our future energy needs.
Mossyrock – One of Seven of Our Dams
The Integrated Resource Plan (IRP) is a tool to help Tacoma Power plan for an uncertain future so we can continue to meet our customers’ needs for decades to come. Approximately every four years, we complete a full refresh of the IRP. We also revisit and make small updates to the plan between the larger refresh years.
Read the 2020 IRP- Public Input Process
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We welcome input from our community and hold a public input process as part of the development of each IRP. Our 2020 IRP process centered around a series of four half-day workshops with a stakeholder working group between late February and late June. Workshops are now complete. Workshop materials and records are available below.
Click here to read the 2020 IRP
A shorter, more accessible version of the 2020 IRP will be available at the beginning of October.
Workshop One: Introductory Meeting
Click here to view the meeting materials
Click here to view the meeting notes
Click here to listen to a recording
Workshop Two: Key Inputs
Click here to view the meeting materials
Click here to view the meeting notes
Click here to watch a recording
Workshop Three: Current Resources and Future Options
Click here to view the meeting materials
Click here to view the meeting notes
Click here to watch a recording
Workshop Four: Analysis Results
Click here to view the meeting materials
Other Resources
- Archives
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- 2015 IRP Technical Appendix
- IRP Compliance with Washington State standards
- Resource Adequacy Standard
- Climate Change Study
- BPA Product Analysis (Slive/Block vs. Block with Shaping Capacity Evaluation)
- Candidate Resources for Evaluation
- Development of Scenarios for the 2015 Integrated Resource Plan
- Power Price Forecast Presentation – June 2015
- Stakeholders Comments
- Energy Storage
- 2015 IRP Technical Appendix