FIGURES 1 Fuel Price Projections for Different Scenarios......................xviii 2 Development Costs of the SPS.......................................xix 3 Total Quantified Construction and O&M Fatalities per 1000 MW-yr . . xx 4 Alternative Futures Analysis of Land Requirements ................ xxii 5 Alternative Futures Analysis of Annual Water Consumption for Baseload Electricity Generation .............................. xxiii 2.1 Analysis Sequence for Comparative Assessment................. 5 2.2 Comparative Assessment Classification System................. 6 3.1 Satellite Power System Concept.................................16 3.2 SPS Satellite Configurations...................................17 3.3 SPS Efficiency Chain, GaAlAs and Si...........................18 3.4 Efficiency Chain of the Central-Station Photovoltaic System .... 21 3.5 Generation of 1250 MW, High-Sulfur Coal, Wellman-Lord Process ... 23 3.6 Wellman-Lord Process...........................................25 3.7 1250-MW Coal-Gasification/Combined-Cycle System .................. 27 3.8 Summary of Emissions from a 1250-MW, Low-Btu Gasifier, Combined-Cycle Plant.....................................29 3.9 Simplified LWR Flow Diagram...................................31 3.10 1250-MW Liquid-Metal, Fast-Breeder Reactor.....................34 3.11 Configurations of Pool- and Loop-type Primary Coolant Systems ... 35 3.12 Schematic of NUWMAK Fusion Power Plant.........................38 3.13 Schematic of NUWMAK Load-Leveling System.......................39 3.14 Tritium Effluent System Design................................ 40 3.15 Development Costs of the SPS...................................43 4.1 U.S. Energy Output Ratios, 1929-1974, and Base Projections to 2025. 52 4.2 Simplified Macroeconomic Model of the Interaction between Energy and the Economy........................................ 53 4.3 Ratio of Gross Energy/GNP, in 10^ Btu/1971 $....................... 57 4.4 Supply-Demand Patterns for Various Scenarios in the Year 2000 ... 58 4.5 Supply-Demand Patterns for Various Scenarios in the Year 2025 ... 59 4.6 Electrification as a Percentage of Net Energy Use: Three Scenarios.............................................. 60 4.7 Delivered Oil Prices.................................................61 4.8 Delivered Natural Gas Prices, $/10$ Btu ........................... 62 4.9 Delivered Coal Prices, $/10$ Btu................................... 63
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