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2011 Five-Year Transmission Plan Economic Studies

2011 Five-Year Transmission Plan Economic Studies. Hong Xiao ERCOT Mid-Term Planning. Outline. Study assumptions of 2011 Five-Year Transmission Plan economic analysis Current status Next steps Questions and comments. 2011 5YTP Economic Study Assumptions. Study Year–2014 Generation

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2011 Five-Year Transmission Plan Economic Studies

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  1. 2011 Five-Year Transmission Plan Economic Studies Hong Xiao ERCOT Mid-Term Planning Regional Planning Group (RPG) Meeting

  2. Outline • Study assumptions of 2011 Five-Year Transmission Plan economic analysis • Current status • Next steps • Questions and comments Regional Planning Group (RPG) Meeting

  3. 2011 5YTP Economic Study Assumptions • Study Year–2014 • Generation • Generators • Latest generation interconnection project list • Signed SGIA • Latest generator operational status • Maintenance outages • Natural Gas Prices • Annual price of $4.40/MMBtu • Vary by month based on pre-defined ratios • Emissions • NOx and SO2 Regional Planning Group (RPG) Meeting

  4. 2011 5YTP Economic Study Assumptions (cont’d) • Transmission • Transmission network resulted from reliability analysis • Dynamic Ratings • Based on temperatures varying by month and by Weather Zone • Consistent with CRR Annual Auctions • Interfaces • Valley import, 1100 MW • Laredo import, 525 MW • Contingencies • Transmission lines and autotransformers, 69 kV or above • Load • LTLF less losses, updated with self-served • Peak load and hourly load profiles Regional Planning Group (RPG) Meeting

  5. 2011 5YTP Economic Study Status • Start Case Information Posted at POI • Buses with bus load distribution • Branches, contingencies, and monitoring exceptions • Interfaces • Load forecast and hourly load profiles • Flat load in each Weather Zone • Natural gas prices • Start Case Simulation Results Posted at POI • Binding constraints sorted by Shadow Prices • Unit commitment and dispatch Regional Planning Group (RPG) Meeting

  6. 2011 5YTP Economic Study Next Steps Review simulation results and identify potential economic projects Discuss potential economic projects with TSPs Finalize economic projects Complete the 2011 Five-Year Transmission Plan report to include economic study findings and recommendations Regional Planning Group (RPG) Meeting

  7. Questions and Comments

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