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Easing the Integration of Intermittent Renewables with Combined Heat and Power Kyle Siler-Evans RenewElec Workshop, 2010
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The Problem Fluctuations in intermittent renewables must be balanced with fast-ramping resources. – Adds cost and emissions 1
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The Problem: Reduced Emissions Performance Source: Katzenstein et al., 2009 2
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The Problem: Added Cost Cost of energy supply in PJM: Energy: ~$50 billion Capacity: ~$5 billion Regulation: ~$0.5 billion (~1%) Reserve: ~$0.03 billion Source: Based on 2008 PJM market data 3
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Outline Balancing Intermittent Resources with CHP Encouraging Privately Owned Resources to Support the Grid Spurring Adoption of CHP 4
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Combined Heat and Power Conventional Generation 5
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Why CHP? Source: Adapted from EPA, 2008 6
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Why CHP? Source: Adapted from EPA, 2008 7
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Example Scenario: Oversize industrial CHP Source: Adapted from EPA, 2008 8
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Example Scenario: Use excess capacity from underutilized CHP 9
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~100 GW installed In U.S. Example Scenario: Use excess capacity from underutilized CHP 10
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Research Objectives How does the “CHP strategy” compare to traditional, centralized gas turbines? How much CHP is needed to balance a given penetration of intermittent renewable generation? 11
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Outline Balancing Intermittent Resources with CHP Encouraging Privately Owned Resources to Support the Grid Spurring Adoption of CHP 12
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Regulation Markets Regulation requirement in PJM is ~1000 MW (1% of daily peak). 25% of this requirement can be met by demand-side resources. There was not a single demand-side resource participating in the regulation market in 2008. 13
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Regulation Market Prices Source: PJM 2008 market data 14
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Research Objectives Evaluate existing opportunities for demand- side resources to participate in regulation services. Designing new mechanisms for DSR participation where necessary. 15
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Outline Balancing Intermittent Resources with CHP Encouraging Privately Owned Resources to Support the Grid Spurring Adoption of CHP 16
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Making CHP More Attractive 17
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Encouraging Broad Adoption of CHP Strachan, N.; Dowlatabadi, H., Distributed Generation and Distribution Utilities. Energy Policy 2002, (34), 649-661. King, D.; Morgan, M., Customer-Focused Assessment of Electric Power Microgrids. Journal of Energy Engineering 2007, 150-164. King, D.; Morgan, G., Guidance for Microgrid Legislation. 2003. 18
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Thank You Question? 19
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