Chula Vista, CA: Energy performance

Energy Performance
Cumulative (vs. Baseline)8%
Annual (2018)0%
PORTFOLIO ENERGY PERFORMANCE

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. Chula Vista's portfolio consists of 39 buildings and 890,000 square feet. Chula Vista has improved energy performance by 8% from a 2010 baseline. Energy savings have been achieved by implementing lighting retrofits across all properties, HVAC upgrades at three facilities and a total of 1.7 MW of solar PV at various facilities. The City is has completed part of the citywide indoor LED and the second phase will focus on park LED retrofits, as well as an additional 2.5 MW of solar to be installed at 12 sites.  

ENERGY PERFORMANCE BY PROPERTY

Looking at the percent improvement in energy performance across all facilities can provide insight into how an organization is saving energy. Chula Vista has achieved energy performance improvement of greater than 10% at all of its properties. There are 16 properties that have experienced an increase in Source EUI. These properties have been targeted for future energy efficiency improvements. All city-owned facilities had interior LED lighting retrofits with the potential for an estimated 45-60% energy savings.  

IDENTIFYING OPPORTUNITIES FOR IMPROVEMENT

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. Chula Vista's portfolio consists of properties with a wide range of baseline EUI values, most of which are from 0 to 200 kBtu/sq. ft. The majority of properties have shown energy improvement since 2010. The properties located near or below the 0% axis may present good opportunities for further savings. These buildings are part of the LED interior lighting retrofit, and will benefit from that project slated for this year. The LED retrofit has helped increase energy reductions for the end of 2018.