King County, WA: Energy performance

Energy Performance
Cumulative (vs. Baseline)18%
Annual (2017)1%

Better Buildings Challenge Partners strive to decrease portfolio-wide source energy use intensity (EUI) and to increase the percent improvement compared to a set baseline. King County's portfolio consists of more than 100 buildings and 5 million square feet. Partner has improved energy performance by 18% from a 2011 baseline, making progress towards a goal of 20% by 2024. Energy savings have been achieved through efficiency investments at dozens of sites across all county agencies. 2017 results were driven largely by the county's commitment to replace all of its lighting with LED products by the end of 2020. A notable contributor to 2017 results was a deep energy retrofit at the county's Airport Terminal, where energy use has been reduced by nearly 70%. Staff engagement in conservation activities has also been successful, with over 1,650 county staff completing a 2017 conservation quiz.


Looking at the percent improvement in energy performance across all facilities can provide insight into how an organization is saving energy.  King County has achieved energy performance improvement of greater than 10% at more than 40 of its properties. There are 14 properties that have experienced an increase in Source EUI. Facilities that have seen increases in EUI are being investigated to identify reduction opportunities.


Property-level energy performance metrics, including EUI and percent improvement to date, are critical to track progress over time and identify opportunities for additional energy savings. King County's portfolio consists of properties with a wide range of baseline EUI values, most of which are from 100 to 400 kBtu/sq. ft. The majority of properties have shown energy improvement since 2011. The properties located near or below the 0% axis may present good opportunities for further savings, and are being targeted to identify reduction opportunities.