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This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor Battelle Memorial Institute, nor any of their employees, makes any warranty, expressed or implied, or assumes my lepJ liability or responsibility for the accuracy, completeness, or usefulness of any Information, Apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government of any agency thereof, or Battelle Memorial Institute. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

This report summarizes work completed within the Technology and Economic Analysis (TEA) Program at the Pacific Northwest Laboratory. The long-term objectives of the TEA Program's Battery Cost Analysis Task are to: 1) enhance coordination of battery cost analysis activities~ 2) improve the quality of battery system cost estimates, and 3) perform cost-oriented analyses that help the Department of Energy establish goals, develop R&D plans, and make decisions on R~O emphasis. Task objectives for FY 1985, and the focus of this report, were to identify the current status of battery system cost analyses and make recommendations for future work in this area. Cost analyses for zinc bromine, sodium sulfur, and lead acid batteries were reviewed. Zinc bromine and sodium sulfur batteries were selected because of their advanced design nature and the high level of interest in these two technologies. Lead acid batteries were included to establish •a baseline representative of a more mature technology. Estimates prepared by individual developers were critiqued to identify global problems that existed and to suggest possible remedies. The quality of any single estimate provided by a developer reflects t~eir resources and research focus, among other factors, and the level of quality may vary for reasons beyond the control of any individual developer • 11 13 Air Lift System Compressor Annual 4 50 94 113 No. of Copies OFF SITE 10 J.