Supplying Biomass to Power Plants
A Model of the Costs of Utilizing Agricultural Biomass in Cofired Power Plants
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U.S. power plants seek to diversify their fuel sources. Biomass energy is a renewable resource, generally with lower emissions than fossil fuels, and has a large, diverse base. To make decisions about investing in a facility that utilizes biomass, prospective users need information about infrastructure, logistics, costs, and constraints for the full biomass life cycle. The model developed in this work is designed to estimate the cost and availability of biomass energy resources from U.S. agricultural lands from the perspective of an individual power plant. As an illustrative example, the model estimates the availability and cost of using switchgrass or corn stover to power a cofired power plant in Illinois and estimates the plant-gate cost of producing biomass fuel, the relative proportions of switchgrass and corn stover, the mix of different land types, and the total area contributing the supplied energy. It shows that small variations in crop yields can lead to substantial changes in the amount, type, and spatial distribution of land that would produce the lowest-cost biomass for an energy facility. Land and crop choices would be very sensitive to policies governing greenhouse-gas emissions and carbon pricing, and the model demonstrates important implications for total land area requirements for supplying biomass fuel.
Table of Contents
Chapter One
Introduction and Motivation
Chapter Two
Modeling Biomass Energy Supply from Agricultural Lands
Chapter Three
Biomass Supply Costs and Distributions of Land and Crops
Chapter Four
Implications for Potential Investors in Power Plants Using Biomass
Appendix A
Switchgrass and Corn-Stover Production Costs
Appendix B
Costs of Transporting and Storing Biomass
This report was sponsored by the United States Department of Energy's National Energy Technology Laboratory and was conducted in the Environment, Energy, and Economic Development Program within RAND Infrastructure, Safety, and Environment.
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