| Overall Rating | Gold - expired |
|---|---|
| Overall Score | 69.71 |
| Liaison | Alex Davis |
| Submission Date | Feb. 28, 2014 |
| Executive Letter | Download |
Arizona State University
OP-8: Building Energy Consumption
| Status | Score | Responsible Party |
|---|---|---|
|
3.62 / 6.00 |
Betty
Lombardo Manager University Sustainability Practices |
Total building energy consumption, all sources (transportation fuels excluded):
| Performance Year | Baseline Year | |
| Total building energy consumption | 1,492,226 MMBtu | 1,586,826 MMBtu |
Purchased electricity and steam:
| Performance Year | Baseline Year | |
| Grid-purchased electricity | 789,344 MMBtu | 898,950 MMBtu |
| District steam/hot water | 0 MMBtu | 0 MMBtu |
Gross floor area of building space::
| Performance Year | Baseline Year | |
| Gross floor area | 18,095,585 Gross square feet | 14,033,632 Gross square feet |
Floor area of energy intensive space, performance year::
| Floor Area | |
| Laboratory space | 789,150 Square feet |
| Healthcare space | 23,938 Square feet |
| Other energy intensive space |
Degree days, performance year (base 65 °F)::
| Degree days (see help icon above) | |
| Heating degree days | 881 |
| Cooling degree days | 5,149 |
Source-site ratios::
| Source-Site Ratio (see help icon above) | |
| Grid-purchased electricity | 3 |
| District steam/hot water | 1 |
Start and end dates of the performance year and baseline year (or 3-year periods)::
| Start Date | End Date | |
| Performance Year | July 1, 2012 | June 30, 2013 |
| Baseline Year | July 1, 2006 | June 30, 2007 |
A brief description of when and why the building energy consumption baseline was adopted:
To coincide with Arizona State University's first formal Greenhouse Gas inventory.
A brief description of any building temperature standards employed by the institution:
Approximately 75% of Arizona State University's buildings at the Tempe campus can be scheduled through the building automation system. This is a Johnson Controls Metasys system that is used to turn air handlers and pumps, etc. on and off according to the scheduling needs for a particular building, or zone within a building. Building occupancy needs are determined by academic, research, and administrative staff, then equipment schedules are optimized to prevent unnecessary run-time.
The Polytechnic campus employs a system called Direct Digital Control (DDC). It’s an allergen system that controls and maintains temperature ranges between 68-80 degrees. It also generates reports on use of energy, remote monitoring and alarms.
West campus buildings have been upgraded to Computerized Direct Digital Controls. Buildings are operated based on the needs of the customer reducing building systems operating hours by over 50%.
A brief description of any light emitting diode (LED) lighting employed by the institution:
Arizona State University Tempe campus has replaced more conventional lighting technology with LED lighting in six large parking structures.
The new Polytechnic campus buildings utilize an architectural LED lighting system for night lighting in the hall ways on three buildings. Also, in the main theater the walk way lighting was installed with LEDs. All of the emergency call boxes use LED lighting for the new buildings as well.
A brief description of any occupancy and/or vacancy sensors employed by the institution:
Motion and light sensors are installed at the Tempe campus Global Institute for Sustainability facility to reduce energy demand for lighting.
The new Polytechnic campus Classroom buildings utilize sensory lighting technology in the hall ways, restrooms and designated classrooms. This technology utilizes both motion coupled with infrared sensing.
The West campus parking lots, roadways and most other outside lighting operates from a central computer system located in the Central Plant.
A brief description of any passive solar heating employed by the institution:
None.
A brief description of any ground-source heat pumps employed by the institution:
None.
A brief description of any cogeneration technologies employed by the institution:
An 8.8 MW natural gas-fired combined heat & power plant provides steam and electricity to the Tempe campus.
A brief description of any building recommissioning or retrofit program employed by the institution:
Arizona State University has completed Phase II of its $70 million Energy Performance Contract where, through the upgrade of our utilities infrastructure, we are working to reduce the energy consumption on the four ASU campuses, in the form of electricity and natural gas, as well as reducing the use of chilled water for cooling. The energy improvements will occur on an ongoing basis.
These energy efficiency projects include the following: The retrofit of interior lighting systems with lower wattage fluorescent light bulbs; the installation of 78 watt LED parking structure fixtures; changing out of campus exterior lighting for lower wattage fixtures; repairing or replacing steam traps; upgrading building HVAC controls with Direct Digital Control Systems and VAV retrofit; installing occupancy sensors; Installing zone pressure sensors, Aircuity, and Phoenix Valves on laboratory fume hoods; as well as implementing an on-going continuous commissioning program.
A brief description of any energy metering and management systems employed by the institution:
In 2004 the University instituted a dedicated Energy Information System designed to track the energy usage across the Tempe campus. This system was designed to track the electrical, chilled water and heating of each building and display the data in a meaningful format. Over the years, the system has grown to track over 90 buildings on the Tempe campus with hopes of continuing its growth in the years to come.
The University also uses dedicated BAS systems at each of its campuses to further monitor and control Building Control systems from a centralized location. These systems monitor and maintain comfortable yet sustainable room temperatures and living conditions.
A brief description of the institution's program to replace energy-consuming appliances, equipment and systems with high efficiency alternatives:
Departments must follow the Purchasing 210 policy when they are purchasing or replacing appliances and equipment.
Arizona State University’s Purchasing 210: Green Purchasing policy reads: All electrical products purchased by ASU shall meet the US EPA Energy Star certification when available and practicable. When products with Energy Star labels are not available, products that are in the upper 25 per cent of energy efficiency as designated by the federal Energy Management Program shall be used.
Departments also have access to Sustainability Initiatives Revolving Fund (SIRF) funding in order to replace entire systems of energy-consuming appliances and equipment with high efficiency alternatives. https://cfo.asu.edu/sirf
A brief description of any energy-efficient landscape design initiatives employed by the institution:
Arizona State University installed a PowerParasol next to the Memorial Union building which provides shade for a series of study tables and a performance stage.
There are several shaded gardens for outdoor lunch areas and social gathering spaces.
A brief description of any vending machine sensors, lightless machines, or LED-lit machines employed by the institution:
All of Arizona State University’s 220 cold beverage vending machines are Energy Star™ certified and are equipped with Energy Miser™ devices. These devices sense usage and power off the refrigeration unit when the machines are not used. All front panel lights in these machines are turned off, except for one machine located in a dark entryway that uses the machine lighting for access.
All 25 refrigerated sandwich machines are equipped with an energy savings program that goes into sleep mode when not used. Sleep mode turns off the front panel lights and reduces refrigeration. These machines are the most energy efficient available.
All 55 snack vending machines are not refrigerated. No usage sensor is needed in these machines. They use low power LED lighting. These machines are the most energy efficient available.
A brief description of other energy conservation and efficiency initiatives employed by the institution:
Arizona State University has formed a strategic partnership with Ameresco and the Rocky Mountain Institute to provide services in support of our energy savings performance contracts and our solarization program.
The website URL where information about the institution’s energy conservation and efficiency initiatives is available:
Data source(s) and notes about the submission:
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 or simply email your inquiry to stars@aashe.org.