Abstract
Energy is used in the production, transportation, and delivery of all goods and services, and is thus crucial to the welfare of a modern industrial society. Recent problems with energy, such as higher prices and the uncertainty of supplies, have consequently had adverse effects on industrial input prices, transport budgets, and the cost of living. These effects, in turn, have prompted a variety of adjustments, such as energy conservation-through reductions in energy intensity and through acquisition of energy efficient capital stock-and substitution of cheaper and more abundant fuels. Since some aspects of fuel switching lead to significant shortfalls in environmental quality, environmental considerations may constrain future energy developments.
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