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Title: Sodium/sulfur battery storage: Integrated generation portfolio analysis and commercialization strategy

Technical Report ·
OSTI ID:7170360

This report summarizes the work performed by Polydyne, Inc. for the Electric Power Research Institute (EPRI) under Contract RP 128-15. The objectives of this study are (1) to assess both the near- and long-term market potential and penetration of sodium-sulphur batteries for electric utility storage and load leveling; and (2) based upon this analysis, to develop a feasible strategy for commercialization of this technology. This report documents the results of an integrated commercialization analysis of sodium-sulphur batteries for electric utility storage applications. The analysis represents an integration of market, economic, risk, and financial considerations, culminating in a dynamic market penetration potential for sodium-sulphur battery storage plants. This potential is derived over time under conditions of uncertainty as part of an overall portfolio approach to generation planning. The resulting commercialization strategy involves forward-pricing of the first twelve 100-MWh sodium- sulphur battery storage plants in high-value markets at an average price reflecting learning costs and portfolio considerations. This forward price is commensurate with the portfolio valuation or risk-premium of the sodium-sulphur battery in high-value utility markets. Subsequent to these first twelve plants, the marginal cost of sodium-sulphur battery storage plants is projected to become increasingly attractive in comparison to other alternatives for peaking and intermediate load applications as a result of further production learning and technological innovation cost reductions. Based upon generation portfolio considerations, the potential portfolio market for mature sodium-sulphur batteries for electric utility applications was assessed to be one-third of the peaking capacity (approximately 5% of the total US installed generation capacity), or 45 GW by 1990 to 60 GW by the year 2030. 30 refs., 35 figs., 13 tabs.

Research Organization:
Electric Power Research Inst., Palo Alto, CA (USA); Polydyne, Inc., San Mateo, CA (USA)
Sponsoring Organization:
EPRI
OSTI ID:
7170360
Report Number(s):
EPRI-GS-6704
Country of Publication:
United States
Language:
English