Mercy Housing: Energy performance

Energy Performance
Average Annual % Improvement 4%
PORTFOLIO ENERGY PERFORMANCE

Better Buildings Challenge Partners comitt to decrease portfolio-wide source energy use intensity (EUI) and to increase the percent improvement compared to a set baseline. Since 2013, Mercy Housing has improved their portfolio-wide energy performance by an average of 3.7% each year, which is equivalent to a cumulative improvement of 24% against a 2010 baseline.  Mercy Housing achieved energy savings by focusing on finding large scale opportunities that did not require capital. Mercy Housing used a variety of approaches including leveraging rebates, changing its procurement guidelines, building to environmental standards, and a number of other techniques and technologies. Of particular note was its work with an ESCO that offers a payment model based on measured, weather-normalized, post-implementation energy savings to implement a multi-year, multi-phase, multi-property energy and water efficiency retrofit project.

UTILITY DATA IN MULTIFAMILY PORTFOLIOS

Multifamily property owners often face challenges in gathering whole building data for properties with large numbers of individual tenant-paid utility accounts. Through the Better Buildings Challenge, partners can demonstrate progress towards their savings goal by reporting two types of data: (1) whole-building energy use, including tenant-paid utilities, for at least 30 percent of their portfolio; and (2) owner-paid receipts (common areas only) for the remaining share of their portfolio. Mercy Housing's portfolio consists of 318 properties and more than 21 million square feet and approximately 23,000 housing units, with whole-building data (both tenant-paid and owner-paid receipts) available for 84% of their portfolio.

Mercy Housing
WHOLE BUILDING VS. OWNER-PAID PERFORMANCE

This graph breaks out the portfolio's energy performance for properties with whole building energy use vs those with owner-paid receipts. Mercy Housing has achieved 3.8% savings in properties with whole-building data and 1% in properties with owner-paid receipts. 

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.  Mercy Housing has achieved energy performance improvement of greater than 15% at more than 141 of its properties. There are 85 properties that have experienced an increase in Source EUI.  These properties have been targeted for future energy efficiency improvements.

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. Mercy Housing's portfolio consists of properties with  a wide range of baseline EUI values, most of which are from 0 to 300 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.