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<br /> <br />8 <br />3.2 High-Performance Buildings <br />High-performance building energy use was also estimated using IES VE energy modeling software for each <br />building type and size. While these models used the same geometry and occupancy schedules as the <br />baseline buildings, the high-performance buildings are assumed to: <br />• Be all-electric (use no natural gas) <br />• Have high-performance envelopes and lighting, exceeding code requirements <br />• Use highly efficient HVAC systems, including heat pumps that are connected to a district energy <br />system <br />3.3 Results of Building Strategies <br />Using these parameters, the high-performance buildings are predicted to use 36%-72% less energy than the <br />baseline buildings (Table 2). The building energy use intensity (EUI) and percentage reduction vary based on <br />building type, with offices on the lower end of the range and light industrial on the upper end. This equates <br />to a 62% reduction in the community’s total building energy use (all RCC buildings blended). Because the <br />high-performance buildings are all-electric – in comparison to the baseline buildings where nearly three- <br />quarters of energy use is utility gas (Figure 2) – they also have the potential to use carbon-free energy <br />sources. <br /> Building EUI Community <br />EUI <br />Baseline Buildings 44-103 63 <br />High-Performance Buildings 18-32 24 <br />% Reduction 36%-72% 62% <br />Table 2. Building energy use intensity (EUI) comparison in kBtu/sf-year <br />