420 



$106/kH. This is much smaller impact of balance-of- 

 plant than the Council's $1322 per installed kilowatt 

 of unit generator capacity. 



IltE laajL POWFR PLAN SOLAR-FUEL UNCERTAINTY 



The 1991 POWER PLAN overlooked the vast body of HOURLY 

 SOLAR-FUEL predictive models, analyses, and measurement 

 confirmation at numerous sites in the U.S., compiled in 

 various Department of Energy Programs and the NATIONAL 

 SOLAR RADIATION DATA BASE--1961-1990 at the National 

 Climate Data Center. Rather, the Council subscribed to 

 a BPA funded Pacific Northwest Solar Radiation Data 

 Measurement Program conducted by the University of 

 Oregon and to the notion that perhaps some fifteen 

 years of specific site measurements would be required 

 to establish adequate Solar-Fuel data at each Pacific 

 Northwest location of interest. 



The Solar-Fuel quantity, quality, availability and the 

 dispatchability of resultant photovoltaic electric 

 power at any Pacific Northwest location can be 

 determined in advance as an operational part of the 

 hydrographic and weather predictions at BPA's Dittmer 

 Control Center. Similar is already standard practice 

 at most photovoltaic power plant sites throughout the 

 Country. Hourly and daily predictions based on locally 

 adjusted atmospheric transmission and scattering models 



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