The 2012 Natural Gas IRP was filed with the Idaho, Oregon and Washington Commissions on August 31, 2012. We will start preparing for the 2014 IRP in January 2014. If you or your organization would like to participate in this process, or be included in our Technical Advisory Committee mailing list, please email Kelly Irvine or contact her by phone at 509-495-4335.
2012 Natural Gas IRP (PDF: 3.0 MB)
2012 Natural Gas IRP Appendices (PDF: 14.0 MB)
2007 Natural Gas IRP Appendices (PDF: 3.2 MB)
2006 Natural Gas IRP (PDF: 2.3 MB)
2006 Natural Gas IRP Appendices (PDF: 1.6 MB)
NOTE: You must have Adobe Acrobat Reader 4.0 or higher installed in order to view the IRP.
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