PacifiCorp 2007 Integrated Resource Plan (May 30, 2007)

PacifiCorp – 2007 IRPChapter 1 – Executive SummaryThe preferred portfolio’s specific proxy resources and acquisition timing are shown in Table 1.3.Table 1.3 – PacifiCorp’s 2007 IRP Preferred PortfolioSupply and Demand-side Proxy ResourcesNameplate Capacity, MWResource Type 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016East Utah pulverized coal Supercritical 340Wyoming pulverized coal Supercritical 527Combined cycle CT 2x1 F class with duct firing 548Combined cycle CT 1x1 G class with duct firing 357Combined Heat and Power Generic east-wide 25Renewable Wind, Wyoming 200 200 200 300Class 1 DSM* Load control, Sch. irrigation 26 25 18Front office transactions** Heavy Load Hour, 3rd Qtr - - - 393 272 97 3 149 192 165West CCCT 2x1 F Type with duct firing 602Combined Heat and Power Generic west-wide 75Renewable Wind, SE Washington 300 100Renewable Wind, NC Oregon 100 100 100Class 1 DSM* Load control, Sch. irrigation 12 11 12Front office transactions** Flat annual product - - - 219 64 555 657 247 246 249Annual Additions, Long Term Resources 300 300 100 312 839 1,125 318 527 - 357Annual Additions, Short Term Resources - - - 612 336 652 660 396 438 414Total Annual Additions 300 300 100 924 1,175 1,777 978 923 438 771* DSM is scaled up by 10% to account for avoided line losses.** Front office transaction amounts reflect purchases made for the year, and are not additive.Transmission Proxy Resources*Transfer Capability, MegawattsResource 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016East Path C Upgrade: Borah to Path-C South to Utah North 300Utah - Desert Southwest (Includes Mona - Oquirrh) 600Mona - Utah North 400Craig-Hayden to Park City 176Miners - Jim Bridger - Terminal 600Jim Bridger - Terminal 500West Walla Walla - Yakima 400West Main - Walla Walla 630Total Annual Additions - - - 700 630 1,776 - 500 - -* Transmission resource proxies represent a range of possible procurement strategies, including new wheeling contractsor construction of transmission facilities by PacifiCorp or as a joint project with other parties.The preferred portfolio reflects a diverse resource mix, as evidenced by the increasing contributionof renewables, gas-fired, and front office transactions to system generation. Figure 1.3 comparesthe system energy mixes for 2007 and 2016, which include preferred portfolio resourcesand reflect the average generation across the five CO 2 cost adders modeled.While the preferred portfolio is based on a target planning reserve margin of 12 percent, Pacifi-Corp is targeting a reserve margin range of 12 to 15 percent to increase planning flexibility givena time of rapid public policy evolution and wide uncertainty over the resulting down-stream costimpacts. The preferred portfolio also is consistent with the company’s strategic view on the roleof firm market purchases for meeting capacity needs: that limited use of such purchases is beneficialby increasing planning flexibility and portfolio diversity, but that the company seeks less8