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. Our last full IRP refresh was conducted in 2015, and an update was completed in 2017. The next IRP is scheduled for completion in August 2020.
Public Input
We welcome input from our community and hold a public input process as part of the development of each IRP. Our 2020 IRP process centers around a series of four half-day workshops with a stakeholder working group between late February and early June.
If you are interested in serving as a member of Tacoma Power’s IRP 2020 working group, please review the description of the group and complete this online interest form.
All workshops are public and materials are published on our website.
If you are interested in joining our IRP mailing list, please email us.
Workshop Schedule
- Workshop One: Introductory Meeting
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Monday, Feb. 24 from 1 to 3 p.m.
Location: Tacoma Public Utilities at 3628 South 35th Street, Tacoma, WA 98409
Detailed meeting room and instructions to follow. Remote attendance option available.Tentative topics:
- Introduction to IRP and stakeholder process
- Overview of Tacoma’s IRP models
- Focuses of 2020 IRP
Check back for final agenda and materials.
- Workshop Two: Key Inputs
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Wednesday, March 11 from 12:30 to 4:30 p.m.
Location: Tacoma Public Utilities at 3628 South 35th Street, Tacoma, WA 98409
Detailed meeting room and instructions to follow. Remote attendance option available.Tentative topics:
- Load forecasts and temperature sensitive load simulation
- CPA and conservation plan
- Base case capacity expansion and price forecast
- Preview of metrics, resource options and scenarios
Check back for final agenda and materials.
- Workshop Three: Analysis Framework
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Monday, April 27 from 12:30 to 4:30 p.m.
Location: Tacoma Public Utilities at 3628 South 35th Street, Tacoma, WA 98409
Detailed meeting room and instructions to follow. Remote attendance option available.Tentative topics:
- Metrics to be used (RA, financial and environmental)
- Resource adequacy with current resources
- Review resource options and how they are modeled
- Selected scenarios and how they are modeled
Check back for final agenda and materials.
- Workshop Four: Analysis Results
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Thursday, June 11 from 12:30 to 4:30 p.m.
Location: Tacoma Public Utilities at 3628 South 35th Street, Tacoma, WA 98409
Detailed meeting room and instructions to follow. Remote attendance option available.Tentative topics:
- Performance of each candidate portfolio
- Recommended portfolio
- Actions items for next IRP and Clean Energy Action Plan
Check back for final agenda and materials.
General Comments
If you would like to submit general comments or feedback on Tacoma’s IRP electronically, please use this form.
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