2009 Scenario Reliability Assessment - NERC

Scenario Reliability Self-AssessmentsTable New England-1-1: Scenario Case Energy Efficiency Impacts on Summer PeakDemand Projections and Resultant Supply-Side Capacity Adders to SummerConceptual Capacity.Category 2009 2010 2011 2012 2013 2014 2015 2016 2017 20181. Reference CaseSummer Peak HourDemand (MW)2. Energy Efficiency(EE) Build-Out (percent)3. Energy EfficiencyReduction (MW)4. Energy Efficiency inReference Case (MW)5. EE Needed forSummer Peak DemandScenario Case (MW)6. EE Supply-SideCapacity Scenario CaseSummer Capacity (MW)27,875 28,160 28,575 29,020 29,365 29,750 30,115 30,415 30,695 30,9600.5 % 1.0 % 1.5 % 2.0 % 2.5 % 3.0 % 3.5 % 4.0 % 4.5 % 5.0 %139 282 429 580 734 893 1,054 1,217 1,381 1,548506 641 890 767 767 767 767 767 767 7670 0 0 0 0 126 287 450 614 7810 0 0 0 0 126 287 450 614 781Line 1 shows the Reference Case Summer Peak Hour Demand (MW). Line 4 shows the yearlyEnergy Efficiency impacts in the form of supply-side capacity (MW) which was included withinthe 2009 Long-Term Reliability Assessment Reference Case. Line 5 represents the differencebetween the Energy Efficiency capacity reductions (MW) mandated by the Scenario Case (line3) from those contained within the Reference Case. Where the Energy Efficiency within theReference Case (line 4) is greater than what is needed within the Scenario Case (line 3), theresultant Energy Efficiency (EE) supply-side adder (line 5) is zero. Where the Energy Efficiencywithin the Reference Case (line 4) is less than what is needed within the Scenario Case (line 3),the resultant Energy Efficiency supply-side adder (line 5) is the (positive) difference between thetwo values. As noted earlier, in keeping with ISO-NE’s prior treatment of reflecting demand-sideresources as supply-side capacity, these Energy Efficiency (EE) Supply-Side Adders (line 6) aresubsequently added as equivalent capacity to the Scenario Case Summer Conceptual Capacity(MW) line item, as shown in Table New England 2-5 (line 15).2009 Scenario Reliability Assessment Page 67