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<br />. ~ ~ ". "> Practiical considerations will adversely affect the
<br />t';'" ',:"" ,', ,
<br />c.
<br />> ability ot] non-hydro sources to replace the entire hydro
<br />
<br />
<br />deficiencY,. These practical considerations include
<br />
<br />
<br />transmission problems, fuel supply coordination and
<br />
<br />
<br />costs, ad~itional maintenance requirements when units
<br />
<br />
<br />are operated well above normal capacity factors, area-wide
<br />
<br />
<br />distribution of spinning reserve, and environmental
<br />
<br />
<br />restrictiohs on emissions. Figure 3is a graph showing
<br />
<br />
<br />how the av$rage capacity factor of all WSCC thermal.
<br />
<br />
<br />capacity i~ related to the magnitude of the hydro energy
<br />
<br />deficit.
<br />
<br />
<br />A summary discussion of the drought's impact on
<br />
<br />
<br />electricity: supply in the Pacific Northwest and California
<br />
<br />follows. More detailed discussion is contained in
<br />
<br />
<br />Appendix ILL
<br />
<br />22
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