24 Example Impacts of Alternative Discount Rates on Unit Energy Costs.................................. 91 25 Payback Analysis of SSPS Development Programs (r=7.5%).............................................. 94 26 SSPS Unit Energy Costs Required to Recover Costs Under Alternative Discount and DDT&E Assumptions. . . 9^ 27 Unit Cost of Energy as a Function of Discount Rate and DDT&E at Full Buildout of SSPS (109 5-GW Satellites). 99 28 Major Components of Capital Cost for a 10 GW Satellite (Excluding DDT&E) (Millions $1974 or $1975) ........ 101 29 Example Solar Array Total and Unit Costs............. 103 30 Estimates of Competitive Generation Costs by Various Sources.............................................. 1°8 31 Estimate of Baseload Energy Generation Costs for SSPS (Photovoltaic) Using TRW Methodology (Per kW) .... Hl 32 Baseload Plant Comparisons........................... H2 33 Busbar Energy Costs for Three Alternative Systems ($1975).............................................. HO 34 Comparative Energy Costs (Busbar) for Alternative Systems (1975)........................................ H® 35 Alternative Estimates of LMFBR Busbar Energy Costs (1974-1975$).......................................... i24 36 Estimate of Sales Revenue for Fissile Plutonium for the LMFBR............................................ 126 37 Alternative Estimates of Terrestrial Solar (Central Receiver Thermal) Busbar Energy Costs ............... I29 38 Hypothetical Allocation Over Time of Alternative Estimates of LMFBR Program Costs..................... I29 39 Preliminary Terrestrial Solar R&D Estimate: (Central Receiver Plant) ...................................... I39 40 Hypothetical Growth Patterns of Generating Capacity for Alternative Power Sources to Reach 445 GWe by 2020 (in GWe).............................................. i32
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