• Regulatory requirement – Triennial Filing every three years with annual updates every year • The IRP process ultimately results in the selection of a Preferred Portfolio • Preferred Portfolio contains expected retirements, demand- and supply-side additions over the 20-year planning horizon • Preferred Portfolio is selected with a goal of identifying “the portfolio of resources that meets customer requirements at the lowest reasonable cost given an uncertain future ” • This assessment通过对潜在不确定因素的风险分析来告知,这些因素可能最终会影响长期公用事业成本(例如,在各种基于气价和碳限制的市场价格方案中计算出净现值收入需求“ NPVRR”)
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