2009 Scenario Reliability Assessment - NERC

Scenario Reliability Self-AssessmentsOther) and Conceptual Capacity. This is shown because the 2009 Long-Term ReliabilityAssessment Reference Case had already shown some of this new renewable capacity beingcommercialized in the near-term (thus shown as Future Capacity (Planned & Other). Thoseequivalent amounts of capacity had to be taken out of the remaining Conceptual Capacity lineitem.One problem pertaining to wind capacity within the associated NERC spreadsheets is that whenit is categorized as Conceptual Capacity, only nameplate capacity is used. When that same windcapacity becomes near-term commercial, and is placed into the Future Capacity line item, thenthe specific Future, Planned Wind Expected On-Peak and the Future, Other Wind Derate On-Peak Capacity must be defined using the existing market rules and site-specific windinformation. Unfortunately, this information is not available for the majority of wind projectswithin the ISO-NE Queue, thus the reasoning for using nameplate wind capacity within both theReference and Scenario Case Conceptual Capacity line items.Although somewhat confusing, the Scenario Case’s new renewable capacity does match upbetween nameplate projections shown here (Table New England 2-1 through Table New England2-4) and the individual capacity components defined within the corresponding Scenario Casespreadsheet (as shown in Table New England 2-5 and Table New England 2-6).Page 722009 Scenario Reliability Assessment