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Guidance for Utility Adequacy Assessments

Guidance for Utility Adequacy Assessments. Steering Committee Meeting January 29, 2010. Outline. Arguments For Utility Guidance Arguments Against Utility Guidance Current Regional Adequacy Standard Potential methodology to provide guidance. Arguments For Utility Guidance.

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Guidance for Utility Adequacy Assessments

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  1. Guidance forUtility Adequacy Assessments Steering Committee Meeting January 29, 2010

  2. Outline • Arguments For Utility Guidance • Arguments Against Utility Guidance • Current Regional Adequacy Standard • Potential methodology to provide guidance Resource Adequacy Steering Committee Meeting

  3. Arguments For Utility Guidance • Could help make utility planning more consistent throughout the region • Would make utility planning consistent with the Council’s power plan • Would help utilities with smaller long-term resource planning budgets Resource Adequacy Steering Committee Meeting

  4. Arguments Against Utility Guidance • Could be perceived as infringing on the jurisdiction of individual utilities • Would be very difficult to develop a precise tool • Could be misused as a surrogate for a long-term planning process Resource Adequacy Steering Committee Meeting

  5. Current Regional Adequacy Standard Measures • Energy: Annual average generating capability must equal annual average load • Includes an amount of non-firm resources derived from an LOLP analysis • Capacity: Sustained-peak generating capability must equal sustained-peak load plus a reserve margin • Sustained-peak generation includes some non-firm resources • Reserve margin is derived from an LOLP analysis that includes some non-firm resources Resource Adequacy Steering Committee Meeting

  6. Possible Approach for Utility Energy Measure • Annual generating capability = annual load • Amount of non-firm generation to include is a function of total non-firm available to the utility plus other factors • This function has not yet been defined Resource Adequacy Steering Committee Meeting

  7. Possible Approach for Utility Capacity Measure • Sustained-peak generating capability = sustained-peak load plus a reserve margin • Sustained-peak generation includes some non-firm generation, which is a function of total non-firm available to the utility plus other factors • The reserve margin is a function of the total non-firm available to the utility plus other factors • This function has not yet been defined Resource Adequacy Steering Committee Meeting

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