PacifiCorp 2007 Integrated Resource Plan (May 30, 2007)

PacifiCorp – 2007 IRPChapter 7 – Modeling andFigure 7.9 – Stochastic Mean Cost by CO 2 Adder Case23,000Stochastic Mean PVRR (Million $)22,50022,00021,50021,00020,500$0 Adder$8 Adder$15 Adder$38 Adder$61 Adder20,000RA1RA2RA3RA4RA5RA6RA7RA8RA9RA10RA11RA12It is noteworthy that the CEM’s deterministic portfolio solution without resource restrictions—Portfolio RA1—also has the lowest stochastic cost. Table 7.19 summarizes the cost impact ofconstraining CEM-selected resources in the reference portfolio according to the resource strategiesdefined for the other portfolios. The average PVRRs for the five CO 2 adder cases is used asthe cost impact measure.Table 7.19 – Cost Impact of Portfolio Resource StrategiesCost Impact Relative to PortfolioRA1ID Resource Strategy Modeled in the CEMAve. Stochastic Mean PVRR forCO 2 adder cases( Million $)RA1 Reference Case: no resource constraints (FOT capped at 1200 MW) -RA2 Remove FOT as a resource option after 2011 81RA3 Additional wind 57RA4 Plan to a 12% PRM and remove FOT after 2011 120RA5 Early SCPC and force IGCC in 2014 783RA6 Remove SCPC as a resource option 885RA7 Additional wind and remove FOT after 2011 54RA8 Plan to a 12% PRM 183RA9 Force IGCC in 2013 and 2016 651RA10 Force IGCC in 2013 and 2016; plan to 12% PRM 540RA11 Additional wind; exclude SCPC for 2012-13 and force IGCC in 2014 348RA12 Same as RA11 but plan to a 12% PRM 347163