The Economics of Exhaustible Resources
2021
We consider in this chapter Hotelling’s classic model of the economics of exhaustible resources and its extensions. The social planner’s problem in this model is to maximize the discounted social benefit from consumption of a homogeneous resource under the constraint that cumulative consumption is no greater than the initial resource stock. The marginal resource rent for the optimal extraction path grows at the real rate of interest, and the equilibrium resource price meets this condition, known as “Hotelling’s rule”. This rule modifies under the model extensions to heterogeneous resources: the marginal rent falls if extraction switches from low-cost to high-cost resource stocks. We consider the models of resource pricing in the presence of a backstop technology, the Herfindahl principle that a lower-cost resource stock depletes before extraction switches to a higher-cost stock, and the principle of comparative advantage for a more general case of heterogeneous resources and consumers.
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