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Comparing Coal IGCC with CCS and Wind-CAES Baseload Power Options in a Carbon-Constrained World

Outline. Wind and Coal ComparisonStrategies for Baseload WindDispatch Cost and Capacity FactorGeneration Costs of Coal and Wind. Coal vs. Wind?. Coal vs. Wind?. Baseloading WindBackup:Natural Gas (SC/CC)Low Capital CostFast RampingStorage: CAESLow Cost Bulk StoragePotential for Widespread AvailabilityLarge Scale.

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Comparing Coal IGCC with CCS and Wind-CAES Baseload Power Options in a Carbon-Constrained World

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    1. Comparing Coal IGCC with CCS and Wind-CAES Baseload Power Options in a Carbon-Constrained World

    2. Outline Wind and Coal Comparison Strategies for Baseload Wind Dispatch Cost and Capacity Factor Generation Costs of Coal and Wind

    3. Coal vs. Wind?

    4. Coal vs. Wind? Baseloading Wind Backup:Natural Gas (SC/CC) Low Capital Cost Fast Ramping Storage: CAES Low Cost Bulk Storage Potential for Widespread Availability Large Scale

    5. Compressed Air Energy Storage (CAES)

    6. Compressed Air Energy Storage

    7. Basic Assumptions 15% Levelized Capital Charge Rate 85% Capacity Factor for All Systems IGCC Costs, GE Entrained Flow Quench Gasifier (FWE 2003) IGCC-V: OCC $1135/kW, LHV Eff 38% IGCC-C: OCC $1428/kW, LHV Eff 31.5% Wind/CAES Costs $923/kW Wind, $453/kW, $1.75/kWh CAES Gas Turbine Costs $234/kW SC, $571/kW CC Fuel Costs, $2002 (EIA 2006) and Emissions (GREET) Natural Gas $5.05/GJ HHV, 18 gCe/kWh Coal $1.31/GJ HHV, 25 gCe/kWh

    8. Generation Costs for Baseload Options

    9. Generation Costs for Baseload Options

    10. Generation Costs for Baseload Options

    11. Generation Costs for Baseload Options

    12. Generation Costs for Baseload Options

    13. Dispatch Cost Concerns Dispatch Cost: fuel + variable operations and maintenance + greenhouse gas emissions price + CO2 transport + storage (short-run marginal cost) Actual capacity factors determined in economic dispatch Systems called on based on dispatch cost Baseload viability requires competitive dispatch costs to sustain large capacity factors

    14. Variable Dispatch Cost

    15. Variable Dispatch Cost: Wind/Gas

    16. Variable Dispatch Cost: Wind/CAES

    17. Dispatch Cost for Baseload Options

    18. Generation Costs Revisited

    19. Generation Costs Revisited

    20. Generation Costs: Current vs. Projected

    21. Conclusions Backup enables wind to participate in baseload High dispatch cost makes wind/gas unviable Wind/CAES has the potential to compete in dispatch and produce electricity at rates comparable to IGCC w/CCS Wind resource quality and remoteness as well as GHG emissions price will be critical factors

    24. Energy Storage Options

    25. Geology Suitable for CAES and Class 4+ Wind Resources

    26. Storage volume required

    27. Generation Costs - no PTC

    28. Variable Dispatch Cost at $100/tC

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