IRP cover image 

Integrated Resource Plan—planning for the future

The Integrated Resource Plan (IRP) is a forecast of conservation resources and supply-side resource additions that appear to be cost effective to meet the growing needs of our customers over the next 20 years.

We know these forecasts will change as the future unfolds and conditions change.

The IRP:

  • Examines the many energy-resource options available to PSE, including the maximum amount of new energy "supply" we can acquire through energy efficiency.
  • Makes a thorough, objective assessment of the benefits, costs and risks associated with each energy-supply option.
  • Analyzes the region's population and economic trends, including a forecast of PSE customers' natural gas and electricity needs two decades into the future.
  • Evaluates political and economic policies and trends, and their potential impact on energy production, usage and availability.

Every two years, a team of in-house economists, energy specialists, environmental advocates, demographers and other experts develops a new IRP.


2017 FINAL IRP Plan Detail

PSE's 2017 Draft IRP was available September 12, 2017. The Final was filed with the Washington Utilities and Transportation Commission on November 14, 2017 and is also available at
The links below will take you to the 2017 Final Integrated Resource Plan (IRP) documents by chapter and appendix.


2017 IRP Advisory Group

Information and presentations for the 2017 IRP Advisory Group meetings are available below.

Show meeting information »

1: Friday, June 17, 2016—IRP Advisory Group
2: Monday, July 25, 2016—Thermal Generation RAC
  • PSE has worked with Black and Veech on thermal plant acquisition and development work for some time. They have been the primary source of plant cost assumptions for IRPs in the past.
  • They, along with others, will be available to discuss updates to their detailed cost assumptions.
  • The focus is on details needed for portfolio modeling, not levelized cost screening.
  • Meeting Notes
  • Presentation
  • Meeting Handouts
3: Wednesday, July 27, 2016—DSR-AC and IRP Advisory Group
  • DSR-AC: 9 am to noon. Navigant is replacing Cadmus in consulting on conservation resource potential assessments. Representatives will be here to walk through the details of how they will be approach that work.
  • IRPAG: 12:30 to 3:30 pm. Focus on discussing scenarios and sensitivities for both electric and gas. While there may be overlap in some areas, we will discuss scenarios that will be different.
4: Monday, August 22, 2016—Renewable RAC
  • Renewable Resources: 9 am – 12:30 pm. PSE has worked with RES on renewable resource acquisition and development for some time. RES has been the primary source of plant cost assumptions for IRPs in the past and will be available to discuss updated assumptions.
  • Energy Storage: 1 pm to 3 pm. Focus on energy storage with several developers joining us in person or via web. Will include RES energy Storage and a few others.
  • Meeting Notes
  • Presentation
5: Wednesday, August 31, 2016—IRP Advisory Group
  • Continue discussion of Scenarios and Sensitivities.
  • Focus on how PSE will approach each of the issues identified.
  • Meeting Notes
  • Presentation
6: Monday, September 26, 2016—GRAC and IRP Advisory Group
7: Thursday, October 27, 2016
  • IRPAG: 
    • Gas Resource Advisory Committee: Discuss details of  supply-side natural gas resources for modeling, including timing costs, and what expansions would be contingent on different market participants.
    • Electric Resource Alternative Assumptions
    • Final scenarios discussion and power prices
8: Monday, November 14, 2016—IRP Advisory Group
  • IRPAG: 
    • Electric and gas load forecasts: customers, loads and peaks
    • Electric resource needs — or check-in if not final
    • Gas resource needs
    • Discuss regional resource adequacy and approach to addressing market reliance given regional short-fall in 2022
8a: Wednesday, December 14th, 2016-IRPAG meeting–postponed
  • DSR-TAC: Review Conservation Potential Assessment
  • Final Scenario Power Prices
  • Final Resource Assumptions (including Montana Wind)
9: Wednesday, January 25, 2017—IRP Advisory Group
10: Friday, February 3, 2017—IRP Advisory Group

11: Thursday, March 16, 2017—IRP Advisory Group

12: Monday, May 22, 2017—IRP Advisory Group

13: June 22, 2017 IRP Advisory Group

13b: Demand Side Resource Conservation Potential Assessment Report
authored by Navigant was filed with the WUTC on Friday, June 30.

14: July 21, 2017 IRP Advisory Group

15: August 11, 2017—IRP Advisory Group

    • Review final draft electric resource plans
    • Review draft results of scenarios and sensitivities
      that will be presented in draft IRP
    • Review final draft gas resource plans
    • Final Meeting Notes
    • PSE Presentation
16: Written Q & As provided to PSE 2017 IRPAG “Share” email list distribution
       between 12/16 & 08/17
17: October 5, 2017—IRP Advisory Group:

18: Written Q & A as provided to PSE 2017 IRPAG "Share" email list distribution and feedback concerning the Draft IRP