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Slgnificant conclusions drawn from the study show that the Redox cell and stack are amenable to mass productlon techniques with a relatively low material cost. For both system size requirements the cell and stack cost 1S a relatively mlnor factor ln the total estimated cost. In both cases the system cost lS domlnated by the cost of the reactants and associated tankage (l.e., 79 to 87 percent of the cost of the 10-kW/500-kWh system and ~6 to 71 percent of the cost of the 10-MW/100-MWh system). Estimates of the manufacturer's selling price for the 10-kW/500-kWh system with an annual productlon rate of 1000 units are shown ln table 5. The range reflects the chromic reactant cost range from $0.32/lb to $1.30/lb. Reactant concentration is 1 molar. Estlmates of the manufacturer's selllng price for the 10-MW/100-MWh system wlth an annual production rate of 100 un1ts are shown ln table 6. Reactant concentratlon is 2 molar. Lower costs for the megawatt systems are largely due to a current density of 100 A/ft2, as opposed to 50 A/ft2 for the kilowatt systems, and a much higher productlon volume of components for the megawatt systems as well as a 2 molar reactant concentration. Market Analyses The analyses addressed ln this task are dlrected toward ldentlfying favorable market sectors and thelr potential for penetration by Redox storage systems. Such data provide a focus for the appropriate system Slze and the requirements for Redox design and development. They ldentlfy those market segments favorably influenced by existlng or planned energy leg1slatlon and thus provide directlon for informatlon dissemination and possible f1eld test sites to enhance the introduction of Redox systems to potential users. Earl Warren Legal Instltute (Grant NAG3-111). - The object of thlS study is to ldentify those lnstltutlonal lssues related to Redox system deployment and technology transfer. The study is currently in progress and prellminary data lndlcate that the eXlstlng leglslatlon, such as the Natlonal Energy Conservation POllCY Act (NECPA) and the PubllC Utlllties Regulatory Policy Act (PURPA), may have an lmportant bearlng on the commerclal uses of Redox. The NECPA may provlde dlrect grants for certain user classes; these grants could provlde an early stimulus for Redox applications. It appears that certain small power producers may offer a special opportunlty for Redox ap- plications. Data collectlon and evaluatlon remaln to be completed before conclusions can be drawn. Aerospace Corporation (NASA-AF Interagency Order C-42701-D). - This study is directed toward performlng a prelimlnary assessment of the market penetration potential for residential Redox system applications. The ap- proach lS to perform a financial analysis of a Redox system ln a favorable residentlal application and to compare it wlth financial analyses of grld- only and advanced lead-acid battery storage, ln all cases wlth and without photovoltaics. The study has not yet been completed; however, some pre- llmlnary results are avallable and are reported here. Table 7 lndicates some of the study assumptlons and table 8 summarlzes the results. Note that 12PDF Image | NASA Redox Storage System Development Project 1980
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