The ideal energy source would be one having abundant raw material resources, operating without pollution, and at a cost lower than that of fossil fuels. How abundant a supply is needed can be estimated from the projected power uses of man. Assuming that the energy consumption will level off (the necessity for ceasing to strive for continuous growth will be discussed later) at a worldwide uniform rate of 50 kilowatts per person (five times the rate of the present U.S. use), and assuming that the earth’s population will not go above 10 billion people, the total need will be 5 × 1014 watts. This is about one hundred times that of the present rate of use.
KeywordsSolar Energy Fission Product Waste Heat Atomic Reactor Pollutional Hazard
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