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7.A. - Page 182 of 285 2019 Nonresidential New Construction Reach Code Cost Effectiveness Study There are several special circumstances to consider when reviewing these results: Improving the efficiency of a project often requires an initial incremental investment. However, some packages result in initial construction cost savings (negative incremental cost), and either energy cost savings (positive benefits), or increased energy costs (negative benefits). Typically, utility bill savings are categorized as a 'benefit' while incremental construction costs are treated as 'costs.' In cases where both construction costs are negative and utility bill savings are negative, the construction cost savings are treated as the 'benefit' while the utility bill negative savings are the 'cost.' ♦ In cases where a measure package is cost effective immediately (i.e., there are upfront cost savings and lifetime energy cost savings), cost effectiveness is represented by ">1". ♦ The B/C ratios sometimes appear very high even though the cost numbers are not very high (for example, an upfront cost of $1 but on -bill savings of $200 over 30 years would equate to a B/C ratio of 200). NPV is also displayed to clarify these potentially confusing conclusions — in the example, the NPV would be equal to a modest $199. 3 Measure Description and Cost Using the 2019 Title 24 code baseline as the starting point, The Reach Code Team identified potential measure packages to determine the projected energy (therm and kWh) and compliance impacts. The Reach Code Team developed an initial measure list based on experience with designers and contractors along with general knowledge of the relative acceptance and preferences of many measures, as well as their incremental costs. The measures are categorized into energy efficiency, solar PV and battery, all -electric, and preempted high efficiency measures in subsections below. 3.1 Energy Efficiency Measures This section describes all the energy efficiency measures considered for this analysis to develop a non - preempted, cost-effective efficiency measure package. The Reach Code Team assessed the cost- effectiveness of measures for all climate zones individually and found that the packages did not need to vary by climate zone, with the exception of a solar heat gain coefficient measure in hotels, as described in more detail below. The measures were developed based on reviews of proposed 2022 Title 24 codes and standards enhancement measures, as well as ASHRAE 90.1 and ASHRAE 189.1 Standards. Please refer to Appendix Section 6.86.7 for a list of efficiency measures that were considered but not implemented. 7 2019-07-25 434