|Overall Rating||Silver - expired|
|Submission Date||Feb. 26, 2015|
Saint Louis University
OP-8: Building Energy Consumption
|1.77 / 6.00||
Sustainability & Benchmarking
Total building energy consumption, all sources (transportation fuels excluded):
|Performance Year||Baseline Year|
|Total building energy consumption||766,262 MMBtu||712,415 MMBtu|
Purchased electricity and steam:
|Performance Year||Baseline Year|
|Grid-purchased electricity||401,548 MMBtu||386,628 MMBtu|
|District steam/hot water||64,749 MMBtu||61,203 MMBtu|
Gross floor area of building space::
|Performance Year||Baseline Year|
|Gross floor area||7,554,573 Gross Square Feet||7,651,755 Gross Square Feet|
Floor area of energy intensive space, performance year::
|Laboratory space||408,652 Square Feet|
|Healthcare space||65,299 Square Feet|
|Other energy intensive space|
Degree days, performance year (base 65 °F)::
|Degree days (see help icon above)|
|Heating degree days||4,944|
|Cooling degree days||1,920|
|Source-Site Ratio (see help icon above)|
|District steam/hot water||1.20|
Start and end dates of the performance year and baseline year (or 3-year periods)::
|Start Date||End Date|
|Performance Year||July 1, 2013||June 30, 2014|
|Baseline Year||July 1, 2012||June 30, 2013|
A brief description of when and why the building energy consumption baseline was adopted:
A 2013 baseline was established based on goals set forth by the University to reduce energy consumption consumption (BTU/GSF) by 20% by 2020 over the 2013 baseline year. Therefore, data and knowledge about initiatives occurring between these time periods can be reported, which may influence fluctuations in energy consumption.
A brief description of any building temperature standards employed by the institution:
Saint Louis University has a standard temperature set point of 72°F all year.
The University uses Metasys, a Johnson Controls system, for building automation and control. The system is configured to enable night setbacks as well as unoccupied and local operation of remote buildings. Based on scheduling needs for a particular building or zone, this system turns air handlers and pumps on and off. Building occupancy needs are determined by academic, event, research, and administrative users for each building or zone.
A brief description of any light emitting diode (LED) lighting employed by the institution:
Large multipurpose banquet rooms and common areas are the primary target for LED retrofits.
LED lighting is being to being installed in many of the following areas: wall mounted exterior lights, chandeliers, private offices, banquet rooms, track lighting, exit signs, and parking lots.
A brief description of any occupancy and/or vacancy sensors employed by the institution:
Dual technology lighting sensors using infrared and ultrasonic detection have been installed and are used to control lighting in most classrooms, conference rooms, and restrooms.
A brief description of any passive solar heating employed by the institution:
A brief description of any ground-source heat pumps employed by the institution:
The Nutrition & Dietetic garden utilizes ground-source heat to provide the warmth needed throughout the winter season, extending the growing season and learning opportunities through the garden to tables program.
A brief description of any cogeneration technologies employed by the institution:
A brief description of any building recommissioning or retrofit program employed by the institution:
Retro-commissioning has been performed on several buildings in the past years including but not limited to the Allied Health Building and Morrissey Hall.
A strategic action team, under the Division of Facilities Services, Energy & Utilities Strategies, has recommended three buildings for retro-commissioning for the 2014-2015 fiscal year.
A brief description of any energy metering and management systems employed by the institution:
Building sub-metering is an ongoing pursuit on campus, SLU utilizes the emon-dmon sub-metering technology to monitor ongoing building energy consumption.
Facilities Services is in the process of implementing the FAMIS Utilities module which will allow for a more complete and concise collection of SLU's utility data. This will provide Facilities Services a better opportunity to analyze the utility data and make more effective energy-related decisions.
Saint Louis University uses Metasys for building automation and control. The system has been configured to enable night setbacks as well as unoccupied and centralized operation of remote buildings. This Johnson Controls system is used to turn air handlers and pumps on and off according to the scheduling needs for a particular building or zone within a building. Building occupancy needs are determined by academic, event, research, and administrative users for each building or zone. The equipment schedules are optimized to prevent unnecessary run-time.
A brief description of the institution's program to replace energy-consuming appliances, equipment and systems with high efficiency alternatives:
Facilities Management is committed to replacing all appliances with Energy Star rated equipment.
A brief description of any energy-efficient landscape design initiatives employed by the institution:
As part of the construction of SLU’s Doisy Research Center in 2008, approximately 7,200 square feet of vegetative roof was installed on the 212,000 square foot building. The roof is an extensive system (4”) and is planted with five (5) varieties of sedum. These varieties were chosen based on their survival capacity and adaptability to a vegetative roof environment in the Midwest (Missouri) climate. This installation helps reduce the effects of heat islands.
For all new flat roofs on campus, the University uses white roofing materials. Experiments are being conducted to evaluate what materials are the best for the application and cost effective.
A brief description of any vending machine sensors, lightless machines, or LED-lit machines employed by the institution:
In 2010, Vending Miser equipment was installed on vending machines to manage lighting and compressor cooling cycles. The local electric utility supplier, Ameren MO, awarded SLU with an incentive rebate of $10,500 for the purchase and installation 105 units installed on refrigerated soda vending machines. This installation is estimated to save $10,229 annually by reducing energy usage by 157,000 kWh each year.
A brief description of other energy conservation and efficiency initiatives employed by the institution:
In 2014, Facilities Services' Energy and Utilities Strategies Action Team established an energy reduction goal for the University that was endorsed by SLU's Sustainability Advisory Council. The established goal is to reduce the University's Energy Intensity (BTU/GSF) by 20% by 2020, over the 2013 baseline year.
In addition, the University signed 25x20 Energy Benchmarking Pledge launched by the High Performance Building Initiative, which is coordinated by the St. Louis Regional Chamber and U.S. Green Building Council - Missouri Gateway Chapter. This pledge aligns with the University's goal for energy reduction, as well as, the City of St. Louis' goal to reduce greenhouse gas emissions by 25% by 2020.
The website URL where information about the institution’s energy conservation and efficiency initiatives is available:
For v1.0, we reported the total GSF that Facilities manages but have since realized that we should have reported the utility GSF, which is the more detailed metric. For v1.2, we have updated the baseline to reflect the utility GSF total.
The information presented here is self-reported. While AASHE staff review portions of all STARS reports and institutions are welcome to seek additional forms of review, the data in STARS reports are not verified by AASHE. If you believe any of this information is erroneous or inconsistent with credit criteria, please review the process for inquiring about the information reported by an institution and complete the Data Inquiry Form.