We consider a model with two energy sources, a non-renewable one, cheap but polluting, and a renewable one, expensive but clean, let’s say coal and solar. The aim of environmental policy is to maintain atmospheric carbon concentration under a given ceiling, chosen to prevent an excessive rise...

Consider a general equilibrium framework where the marginal cost of extraction from several deposits of an exhaustible resource is constant in terms of an inexhaustible perfect substitiute and differs between deposits. The instantaneous rate of productionfrom the inexhaustible resourcce is...

The effective labor possibility frontier (ELPF) is defined as the set of statically efficient allocations of labor imputs in the competing tasks of production and R&D. It summaries the labor scarcity constraint. We show that the dynamically efficient paths of R&D, resource extraction and...

We study the transition between non renewable and renewable energy sources with adjustment costs over the production capacity of renewable energy. Assuming constant variable marginal costs for both energy sources, convex adjustment costs and a more expensive renewable energy, we show the...

We study the transition between non renewable and renewable energy sources with adjustment costs over the production capacity of renewable energy. Assuming constant variable marginal costs for both energy sources, convex adjustment costs and a more expensive renewable energy, we show the...

Il existe une littérature assez abondante sur l'ordre dans lequel une société devrait utiliser ses ressources au cours du temps. Ce que nous voudrions explorer c'est l'incidence d'un progrès technique spécifique, permettant d'économiser les quantités de ressources requises par unité de...

There exist specific factor scarcities if, and only if, the inputs of the production process are not perfect substitutes. Under the extreme assumption of strict factor complementarity between labour and resources in the production of some aggregate consumption good, and assuming that the...

Inside a standard growth model with exhaustible resources, we study the optimal growth policy of an economy submitted to a climate constraint, taking the form of a ceiling over admissible atmospheric carbon concentrations. The optimal scenario is a three phases path: a rise of carbon...