Overall Rating Gold - expired
Overall Score 71.70
Liaison Marianne Martin
Submission Date Sept. 22, 2014
Executive Letter Download

STARS v2.0

University of Colorado Boulder
OP-8: Building Energy Consumption

Status Score Responsible Party
Complete 2.90 / 6.00 Moe Tabrizi
Assistant Director
Facilities Management- Administration
"---" indicates that no data was submitted for this field

Total building energy consumption, all sources (transportation fuels excluded):
Performance Year Baseline Year
Total building energy consumption 1,586,770 MMBtu 1,768,261 MMBtu

Purchased electricity and steam:
Performance Year Baseline Year
Grid-purchased electricity 485,503 MMBtu 447,923 MMBtu
District steam/hot water 607,896 MMBtu 578,657 MMBtu

Gross floor area of building space::
Performance Year Baseline Year
Gross floor area 11,048,065 Gross Square Feet 9,007,607 Gross Square Feet

Floor area of energy intensive space, performance year::
Floor Area
Laboratory space 2,332,798 Square Feet
Healthcare space 55,738 Square Feet
Other energy intensive space

Degree days, performance year (base 65 °F)::
Degree days (see help icon above)
Heating degree days 6,255
Cooling degree days 694

Source-site ratios::
Source-Site Ratio (see help icon above)
Grid-purchased electricity 3.14
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, 2012 June 30, 2013
Baseline Year July 1, 2005 June 30, 2006

A brief description of when and why the building energy consumption baseline was adopted:

The baseline year was chosen to be consistent with the Governor's Executive Orders in 2006.


A brief description of any building temperature standards employed by the institution:

Our Building Automation System (BAS) closely matches our buildings' operational schedule with HVAC operation, activating temperature setbacks after hours.

Some buildings, for example our ARCE office tower building, goes beyond temperature setbacks to completely turn off chiller during unoccupied hours.


A brief description of any light emitting diode (LED) lighting employed by the institution:

We have been using LED technology for underground parking illumination as well outdoor lighting with solar-powered LED. Some new renovations are incorporating LED luminaires in office and workspace settings.

For example, the new Center for Community building utilizes LED lights in the entire underground parking structure as well as many of the fixtures in the building.


A brief description of any occupancy and/or vacancy sensors employed by the institution:

In all new buildings (over 10 new/remodeled buildings this year), as well as large conference rooms, meeting rooms and class rooms, we have deployed lighting control occupancy sensors and/or daylight sensors have been installed.


A brief description of any passive solar heating employed by the institution:

Daylighting and passive solar heating are design elements employed in appropriate facilities.


A brief description of any ground-source heat pumps employed by the institution:

N/A


A brief description of any cogeneration technologies employed by the institution:

The UCB campus benefits from an on-site natural gas fired co-generation of electricity, steam, and chilled water. Currently 100% of the steam and chilled water generated on campus is by Cogen. Prior to 2005, Cogen produced a significant amount of electricity for the campus. Increases in natural gas prices led to the reduction in electricity production by Cogen.


A brief description of any building recommissioning or retrofit program employed by the institution:
A brief description of any energy metering and management systems employed by the institution:

Almost all major campus buildings are connected and controlled by our Building Automation System (BAS). Andover
BAS system enables us to trend buildings' energy consumption and trouble shoot performance issues. We also have submeters for all utilities in all major buildings and usage data is graphically presented at the conservation web site ('View Energy Usage in Your Building').

Data from BAS has been used to verify the success of recommissioning efforts in several buildings such as Wolf Law and Benson Earth Sciences.


A brief description of the institution's program to replace energy-consuming appliances, equipment and systems with high efficiency alternatives:
A brief description of any energy-efficient landscape design initiatives employed by the institution:
A brief description of any vending machine sensors, lightless machines, or LED-lit machines employed by the institution:

We have installed motion sensors on vending machines at student Recreation Center. However, our preferred conservation approach for vending machines is to work with the provider to deploy Energy Star rated equipment that is programmed to operate on the same schedule as building occupancy.


A brief description of other energy conservation and efficiency initiatives employed by the institution:
The website URL where information about the institution’s energy conservation and efficiency initiatives is available:

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.