Title

The Trade-off Between Bioenergy and Emissions With Land Constraints

Campus Units

Economics

Document Type

Article

Publication Version

Submitted Manuscript

Publication Date

3-2013

Journal or Book Title

Energy Policy

Volume

54

First Page or Article ID Number

300

Last Page

310

Abstract

Agricultural biofuels require the use of scarce land, and this land has opportunity cost. We explore the objective function of a social planner who includes a land constraint in the optimization decision to minimize environmental cost. The inclusion of this land constraint in our optimization model motivates the measurement of emissions on a per-hectare basis. Switchgrass and corn are modeled as competing alternatives to show how the inclusion of a land constraint can influence life cycle rankings and alter policy conclusions. With land use unconstrained, ethanol produced from switchgrass is always an optimal feedstock relative to ethanol produced from corn. With land use constrained, however, our results show that it is unlikely that switchgrass would be optimal in the midwestern United States, but may be optimal in southern states if carbon is priced relatively high. Whether biofuel policy advocates for one feedstock over another should consider these contrasting results.

Comments

This is a working paper of an article from Energy Policy, 54 (March 2013); 300-310. Doi: 10.1016/j.enpol.2012.11.036.