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Page 110 <br />POLICY DESCRIPTION <br />New construction projects would be required to meet an energy performance standard that <br />would be dictated by building type.The standardswould beset using a metric called energy <br />use intensity (EUI), which models the total energy consumption of a building for one year <br />divided by the total square footage of the building. On -site PV could contribute to a building <br />meeting the EUI target.Builders following a performance pathway for code compliance <br />would need to meet their respective EUI targets and provide a modeling report as part of the <br />building permit submittal. <br />If the builder were to pursue a prescriptive -based code compliance pathway, additional <br />efficiency measures such as increased insulation levels and reduced lighting power densities <br />would be required to deliver an equivalent level of efficiency as the energy performance <br />standard. <br />PREDICTED ENERGY PERFORMANCE GOALS <br />The City of Boulder's building code"' and the New Buildings Institute (NBI)ix each have <br />example energy performance standards, using site EUI as a m etric,for various building types <br />that the City of Louisville could look to (See Table 2). The City of Boulder standards were <br />developed in 2018 off the previous code cycle. The City of Boulder is lowering these EUI targets <br />ever few years to eventually achieve net zero. NBI's Zero Energy Performance Standards are <br />based on the energy performance of best -in -class buildings for each building type.The NBI <br />standards for Zero Energy Performance were developed with an `efficiency only' lens, and do <br />not consider the cost effectiveness of achieving the efficiency levels for all building types. <br />Building Type <br />City of Boulder Performance <br />Standard (kBtu / sgft.) <br />NBI Zero Energy Performance <br />Standard (kBtu / sgft.) <br />Medium office (5,000 — 50,000 sf) <br />23 <br />21 <br />Mid -rise apartment (Type R2) <br />32 <br />23 <br />Prim a ry school <br />34 <br />25 <br />Small office (<5,000 sf) <br />19 <br />17 <br />Secondary school <br />31 <br />29 <br />Warehouse <br />11 <br />9 <br />Reta it <br />NA <br />34 <br />Table 2: Example energy performance goals for specific building types. <br />Group L 0 T U Lcity""111E N G i P� E E R �� C r^8'+'o i^9 SU3C61R6bilyLouis <br />16 <br />