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Near-Term Opportunities for Integrating Biomass into the U.S. Electricity Supply: Technical Considerations [Pehme köide]

  • Formaat: Paperback / softback, 186 pages, kõrgus x laius: 280x216 mm
  • Ilmumisaeg: 10-Aug-2011
  • Kirjastus: RAND
  • ISBN-10: 0833058355
  • ISBN-13: 9780833058355
  • Formaat: Paperback / softback, 186 pages, kõrgus x laius: 280x216 mm
  • Ilmumisaeg: 10-Aug-2011
  • Kirjastus: RAND
  • ISBN-10: 0833058355
  • ISBN-13: 9780833058355
Biomass is an increasingly important source of electricity, heat, and liquid fuel. One near-term option for using biomass to generate electricity is to cofire biomass in coal-fired electricity plants. This report focuses on two aspects of biomass use: plant-site modifications, changes in operations, and costs associated with cofiring biomass; and the logistical issues associated with delivering biomass to the plant.
Preface iii
Figures
ix
Tables
xi
Summary xiii
Acknowledgments xix
Abbreviations xxi
Chapter One Introduction
1(6)
Background, Methodology, and Study Questions
2(1)
Analytical Goals and Methodology
3(1)
Regulatory Considerations
4(1)
Outline of This Report
5(2)
Chapter Two Cofiring Experience in the United States
7(22)
Introduction
7(4)
Producing Electricity from Coal and Biomass
11(1)
General Information on the Companies and Their Facilities
11(2)
Allegheny Energy
12(1)
Dominion
12(1)
FirstEnergy
12(1)
Florida Crystals
12(1)
NRG Energy
12(1)
Precombustion Biomass Considerations
13(6)
Biomass Fuel Selection
13(2)
Biomass Fuel Acquisition, Receiving, Preprocessing, and Storage
15(2)
Biomass Fuel Handling, Processing, and Feeding
17(2)
Considerations for Combustion of Biomass
19(2)
Technical Concerns with Biomass Combustion
19(1)
Biomass Emissions, Emission Controls, and Waste
20(1)
Economic, Regulatory, and Policy Issues
21(3)
Key Concerns
24(2)
Summary
26(3)
Key Findings
27(1)
Biomass Utilization Decision Process
28(1)
Chapter Three Plant-Site Costs of Cofiring
29(10)
Summary of Model of Plant-Site Costs of Cofiring
29(2)
Model Inputs and Outputs
29(1)
Estimating the Costs of Cofiring
29(2)
Results
31(8)
Base-Case Input Parameters and Assumptions
31(1)
Total Cost of Firing Biomass and Prices for Renewable-Electricity Credits
32(7)
Chapter Four Near-Term Potential Demand for Biomass for Cofiring Applications
39(10)
Introduction
39(1)
Methodology and Data for Estimating Potential Biomass Demand
39(3)
Current Biomass Energy Use
39(3)
Near-Term Potential Demand for Biomass Energy Resources for Cofiring
42(5)
Near-Term Potential Supply Constraints
47(2)
Chapter Five Logistical Considerations
49(10)
Introduction
49(1)
Costs of Handling, Processing, and Transporting Biomass
49(3)
Loading and Unloading Biomass
49(1)
Transportation
50(1)
Storage Requirements and Costs
51(1)
Densification Costs
51(1)
Biomass Sourcing Scenarios
52(7)
Scenario 1 Local Supply of Biomass Energy
52(2)
Scenario 2 Local and External Supply of Biomass Energy
54(2)
Scenario 3 External Supply of Biomass Energy
56(3)
Chapter Six Reductions in Life-Cycle Greenhouse-Gas Emissions from Cofiring with Biomass
59(4)
Introduction
59(1)
Estimating Greenhouse-Gas Emissions from Cofiring
59(1)
Implications of Biomass Life-Cycle Greenhouse-Gas Emissions of Cofiring
60(3)
Chapter Seven Factors Influencing the Development of Biomass Markets
63(8)
Introduction
63(1)
Limiting Factors for Biomass Markets
64(2)
Biomass Prices and Production Costs
64(1)
Technological Constraints on Biomass Production
65(1)
Asymmetric Information
66(1)
The Potential for Processing to Facilitate Biomass Market Expansion
66(2)
What Would Cause Biomass Markets to Grow?
68(3)
Chapter Eight Conclusions
71(4)
Plant Operators' Experiences Cofiring Biomass
71(1)
The Principal Challenge with Respect to Cofiring Biomass Is Maintaining a Consistent Fuel Supply
71(1)
The Choice to Cofire Biomass Depends on a Confluence of Technical and Regulatory Factors
71(1)
Plant-Site Costs of Cofiring
72(1)
Cofiring Biomass Results in Increased Capital and Operating Costs and Lost Revenues
72(1)
Densification of Biomass Does Not Result in Plant-Site Cost Savings
72(1)
Fixed-Price Renewable-Energy Credits Might Not Be an Effective Tool to Encourage Cofiring
72(1)
Potential Biomass Demand and Logistics
73(1)
The Appalachia and Northeast Regions Are Potential Biomass Importers, and the Pacific and Lake States Regions Are Potential Suppliers for the Purposes of Cofiring
73(1)
Densification of Biomass Is Cost-Effective at Distances Greater Titan 200 Miles
73(1)
Greenhouse-Gas Reductions from Cofiring
73(1)
Cofiring Is a Cost-Effective Means of Reducing Greenhouse-Gas Emissions
73(1)
Developing Biomass Markets
74(1)
Biomass Markets for Electricity Generation Cannot Currently Support Densified Fuels
74(1)
APPENDIXES
A Additional Details from Facility Interviews
75(8)
B Supporting Information for Plant-Site Costs of Cofiring
83(34)
C State Summaries of Biomass Use and Potential Demand
117(18)
D Logistics Analysis Documentation
135(10)
E Calculation of Net Greenhouse-Gas Emissions from Biomass Cofiring
145(12)
References 157