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Data Work Group (DWG) Thermal Plant Cycling Costs

Data Work Group (DWG) Thermal Plant Cycling Costs. December 20, 2011. Overview. Process and deliverables Implementation in Promod Startup Costs comparison Forced Outage Rates Estimating Power Plant Cycling Costs – Nikhil Kumar What constitute the Estimates Preliminary Results

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Data Work Group (DWG) Thermal Plant Cycling Costs

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  1. Data Work Group (DWG)Thermal Plant Cycling Costs December 20, 2011

  2. Overview • Process and deliverables • Implementation in Promod • Startup Costs comparison • Forced Outage Rates • Estimating Power Plant Cycling Costs – Nikhil Kumar • What constitute the Estimates • Preliminary Results • The NREL Process - Greg Brinkman • Why Load Following Costs are not as significant? • The NREL approach

  3. So, Why Model Cycling Costs at all? • Many TEPPC stakeholders have expressed concerns about the increased cycling and ramping of thermal generation in the recent TEPPC studies, due to the increased penetration of variable generation. • One of the basic premise is the state Renewable Portfolio Standards (RPS) should be realized without impacting the operation of thermal generation.

  4. Process and deliverables Process • At the October 31st  TAS meeting, DWG was tasked with developing a process for testing and implementing “Thermal Plant Cycling Costs” in the TEPPC 2022 analysis. • We’re working under a tight timeline, aiming to finalize data development by the second week of January, 2012. Deliverables • APTECH data formatted for TEPPC that impacts the dispatch decision: (Base Load & Cycling) • Hot, warm, and cold start costs • Load follow/ramping cost impacts • Base-load Variable Operation and Maintenance (VOM) costs

  5. How can DWG help? • Help develop a recommendation to TAS, that covers: • Using Lower Bound median Values • Review and sign off on Base Load and Cycling Costs: • EFOR • VOM • Ramp Rates (Load Following Costs) • Validate results • Run costs sensitivities (25th_entile and 75th_entile) to determine the impact of cycling on thermal plants.

  6. Are the Results Making Sense?C&M Costs (4/MW cap) Warm starts costs are higher than cold starts?

  7. EFOR Impact% addition to $/MW cap

  8. Questions?

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