extensive and explicit inclusion of the benefits to be experienced by other parts of the energy economy by virtue of large scale construction of LMFBRs. The reduced demand and correspondingly lower pirce for uranium oxide, the ability of existing LWR systems to use bred plutonium and a variety of other considerations are all incorporated into a relative measurement of costs and benefits in the various additions of the WASH-1535 EIR study. This makes it rather difficult to isolate pure busbar costs since the authors of this study explicitly rejected that approach in favor of the approach that fully integrates secondary benefits. Since no literature base exists for full computation of the potentially substantial secondary benefits of the solar system, it was felt appropriate to reconstruct a pure busbar cost model for the LMFBR. This meets the purpose of this analysis but in no way indicates that the secondary benefits should be ignored. In the case of the LMFBR, operating, maintenance, and fuel costs all should be logically offset by the sales of fissile plutonium. A relatively clear treatment of this projected sales of fissile plutonium is provided in the Berkeley study (Ref. A25). Since this was the only really clear treatment of the issue that was not fully integrated with a variety of inseparable benefits, it was used as the basis for this analysis. There is also a question as to the extent to which the ongoing nuclear safety programs are properly chargeable to the LMFBR or would be incurred in any case. As near as can be gathered from an examination of the WASH-1535 study, on which the Berkeley and ECON analysis were based, at least some part of this sbustantial safety cost is not included in the capital or operating costs for the LMFBR. In the case of the terrestrial solar system chosen for analysis in this study, the problems in electrical energy management associated with limited energy storage (6 hrs. at 70% of capacity in this instance) also need exploration. In the case of the SSPS, perhaps one of the most critical issues is the potential additional impact of higher distribution costs. Since it is apparent that SSPS facilities require approximately 5 GWe or more of capacity per plant, this may require substantial increases in distribution costs. Five GWe is much larger than the typical present plant and therefore
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