This paper describes a partial equilibrium method that has been used to estimate national bioenergy crop supply curves in the US. The method requires information about the number of hectares (acres) suitable for bioenergy crop production by land type and region, bioenergy crop yields and production costs for the corresponding land types and regions, and the profitability of the land in alternative uses. We describe how this information can be integrated to create supply curves and discuss the limitations and weaknesses of the approach. (C) 2000 Elsevier Science Ltd. All rights reserved.