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Committee to compare Evanston median, climate-zone median and best-25% as EUI baselines
Summary
Members asked staff to prepare three baseline options (Evanston median, climate-zone median, and best-25%/25th percentile) and to show how many buildings would need to improve under each scenario before the committee votes on the 2050 target approach.
Committee members debated baseline choices for EUI targets, weighing a simple Evanston median (50th percentile) approach against climate-zone medians and aiming for the best 25% of similar buildings. The chair noted that using the median would require roughly half the buildings to make improvements, while a best-25% approach would set a more aggressive threshold.
Gabriela demonstrated climate-zone outputs from Portfolio Manager and explained the tool provides means, medians, percentiles and sample sizes by building type; she and staff will produce a side-by-side comparison so the committee can see how many buildings would fall above target under each baseline. The committee agreed to review the three options and reach a vote on the target approach at a future meeting.
