A major critique of large scale biomass production is the land competition between food and energy crops. A commonly suggested solution is to limit energy crop production to marginal lands. Physical marginally is often used when discussing marginal lands. However, as important is the socioeconomic marginally. This research fills this gap by evaluating willingness to supply bioenergy crops for landowners who have marginal lands. We conducted contingent valuation surveys at study sites with three model crops: switchgrass, miscanthus and willow. Random utility theory is applied to evaluate factors influencing decision maker's choice to plant energy crops. The results indicate that landowners who own marginal lands are more likely to plant energy crops and they require a lower willingness to accept price compared with landowners who do not have marginal lands. At the same time, we noticed that landowners are unfamiliar with these new crops. Economic concerns are the top reasons preventing them from planting energy crops.